СПИСОК патентов США - подгруппа МПК16 H04J14/02


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2017

19609404Telecommunications module
29609403Method of controlling optical network unit (ONU) in sleep mode
39609402Optical transmittal storage networks
49609401Optical switch, optical transmission device, and optical switching method
59608762Distributed spatial mode processing for spatial-mode multiplexed communication systems
69608761Realizing coarse wavelength-division multiplexing using standard multimode optical fibers
79608760Integrated access network
89608759Optical communication system with hardware root of trust (HRoT) and network function virtualization (NFV)
99608758Low cost gain clamped EDFA for TWDM passive optical network application
109608757Bi-directional optical transmission system with coherent detection
119608756Concurrent airborne communication methods and systems
129608734Optical transmission system, optical reception apparatus, and signal adjustment method
139608723Carrier-signal power ratio control in direct detection optical systems
149602898Providing simultaneous digital and analog services and optical fiber-based distributed antenna systems, and related components and methods
159602434Data center architecture utilizing optical switches
169602311Dual-mode network
179602306Method, system and apparatus for efficient multilayer optical networking
189602219Efficient processing of high data rate signals with a configurable frequency domain equalizer
199602216Reflective light-emitting device for a WDM PON optical access network, the device including a light source with an optical gain medium
209602209Extremely high frequency (EHF) distributed antenna systems, and related components and methods
219602202Triple output photodetector current replicator
229602201Optical multiplexing device and method of generating optical OFDM signal
239602200Multiple wavelength optical assemblies for inline measurement of optical power and fiber optic networks
249596524Time-coherent global network employing spectral routers
259596140Methods and arrangements for providing radio access at local site
269596048Method for sharing optical fiber for cloud-based wired and wireless access network, and system and apparatus for same
279596047Implement method of resource reservation protocol with multi-services convergence transmission for optical burst switching networks
289596046Optical line terminal and optical network unit
299596034High brightness dense wavelength multiplexing laser
309596033Optical paired channel transceiver and system
319596028Method and controller for commissioning wavelength division multiplexing optical network during capacity expansion
329590759Bi-directional compact coarse wavelength division multiplexing having a dispersionless bi-directional tap
339590736Using floating transport card for best effort traffic
349590734Method for data processing in an optical network component and optical network component
359590732Active optical combiner for CATV network
369590725Multi-failure resolution optical node, optical communication system using same, and wavelength path switching method
379590724Cooperative multi-point (CoMP) in a passive optical network (PON)
389588297Wavelength selective switch, variable dispersion compensator, optical transmission apparatus, and optical transmission system
399584885System and method for photonic switching
409584256Adaptive error correction code for optical super-channels
419584249Station-side terminal apparatus, optical access network, and communication method
429584248Passive optical network distribution systems and components thereof
439584247Flexible ROADM-less optical hub and spoke node architecture for coherent transponders
449584246Wavelength division multiplexing optical receiver
459584225Realizing coarse wavelength-division multiplexing using standard multimode optical fibers
469581765Scalable optical switches and switching modules
479577783Optical line terminal communication method and device with data structure
489577782Systems and methods for statistical multiplexing with OTN and DWDM
499577781Optical transmission apparatus and optical transmission control method
509577780Method and system for a polarization immune wavelength division multiplexing demultiplexer
519577761Controlling an optical transmitter that supports multiple modulation formats and baud rates
529577758Method and system for scheduling cascaded PON
539577747Photodetection device, photodetection method, and optical transmission device
549577403Multi-wavelength distributed raman amplification set-up
559577136Semiconductor light-receiving element and method for manufacturing same
569575270Wavelength-division multiplexing for use in multi-chip systems
579575255Wavelength division multiplexer array
589571313Full-optical multiwavelet orthogonal frequency divisional multiplexing (OFDM) and demultiplexing
599571223System and method for wavelength conversion and switching
609571222Provisioning time-varying traffic in software-defined flexible grid transport networks
619571221Optical network architecture for hierarchical modulation
629571220Flexible channel coordination for multiple optical carrier optical networks
639571219Wavelength-division multiplexer (WDM) and de-multiplexer (WDDM)
649571218Power efficient subcarrier aggregator and subcarrier combiner for multi-direction variable optical transceiver
659571197Mobile communication repeater integrated monitor device, and method and system for mobile communication relay and information provision
669571190Optical/radio local access network
679571187Wavelength-division multiplexing optical communication system and method for measuring optical performance of an output signal for the system
689565487Network with a fast-switching optical core providing widely varying flow-rate allocations
699564973Method and apparatus for transmitting and receiving interface signals of distributed base station
709564967Management system for GPON based services
719560429Optical switch
729560428Reconfigurable optical access network architectures
739560427Scalable silicon photonic switching architectures for optical networks
749559802Optical network remote node for G-PON and WDM-PON
759559801System and method for applying system policies in an optical communication system having user-allocated bandwidth
769559777Relay system in ring topology
779559776Locally powered optical communication network
789559771Optical transmission device, node device, optical transmission method, and optical transmission system
799559770WSON restoration
809557487Arrayed waveguide grating multiplexer-demultiplexer and related control method
819553881Security monitoring for optical network
829553744Two-dimensional (2D) burst marker (BM) to identify data start and stop
839553692Method and system for determining and controlling power of optical transmitter of optical network unit for time and wavelength division multiplexing passive optical network
849553691Unidirectional multicast system
859553690Passive optical network user terminal and method of power supply control and power supply state reporting for the same
869553689Temperature insensitive DEMUX/MUX in silicon photonics
879553670Optical module
889553667Visible light communication apparatus
899553666Measuring signal to noise ratio of a WDM optical signal
909553665Apparatus and method for detecting optical line fault in passive optical network
919553662Integrated driver redundancy for a silicon photonics device
929551838Optical bridge
939551837Silicon optical line multiplexer devices
949551836Optical switch fabric for data center interconnections
959551833Ultra compact free-space multiplexer/demultiplexer
969549233Transmission device and optical network system
979548835Method of supporting transfer of optical network unit between passive optical networks
989548834Reconfigurable optical add/drop multiplexor and optical switching node
999548816Wavelength control of two-channel DEMUX/MUX in silicon photonics
1009548812Method and apparatus for sub-carrier frequency control
1019548810Optical path processing method and apparatus
1029547622Monolithically integrated system on chip for silicon photonics
1039547132Optical element, light transmitting device, and light receiving device
1049544669Routing in a WDM-based PON
1059544087Amplifying device, receiving device, and amplification method
1069544086Optical branching unit and optical branching method
1079544064Electro-optical implementation of an optical spectrum inverter
1089544056Method of processing a digital signal for transmission, a method of processing an optical data unit upon reception, and a network element for a telecommunications network
1099544050Optical supervisory channel
1109544049Fibre network comprising sensors
1119541714Bidirectional optical transceiver module and method of aligning the same
1129538265Lossless and low-delay optical burst switching using soft reservations and opportunistic transmission
1139537607Communications network using adaptable FEC
1149537603Channel establishment method and device
1159537602Tenant isolation in a multi-tent cloud system
1169537601Method and device for transmitting data
1179537600Reflecting method and device for performing the receiving function of an optical access network using wavelength division multiplexing
1189537599Optical transmitter and optical transmission method
1199537598Architecture of open-flow based software-defined optical label swapping
1209537597Telecommunications network node linking a metropolitan area network with at least one access network
1219537590Synchronization of communication equipment
1229537577Arbitrary grid wavelocking using digitally generated out-of-band tones

2016

1239531496Optical transmission device and optical transmission method
1249531495High capacity network node
1259531477Method and apparatus for transmitting and receiving client signal in optical transport network
1269531474Systems and methods for clip prevention in a CATV network
1279531470Method, system, and node device for monitoring optical performance of wavelength channel
1289531155Switched radio frequency (RF) driver for tunable laser with multiple in-line sections
1299529325Optical processing
1309529215Optical network element
1319529172Breakout cable
1329525922Optical access network
1339525507Method of tuning wavelength in time and wavelength division multiplexing-passive optical network (TWDM-PON)
1349525506Rogue optical network unit mitigation in passive optical networks
1359525505Method and apparatus for acquiring internal fiber connection relationship in reconfigurable optical add/drop multiplexer
1369525504Apparatuses, systems, methods, and computer program products for add-drop multiplexing
1379525490Reconfigurable optical transmitter
1389525483Actively monitored optical fiber panel
1399525479Apparatus and method for optimizing the reconfiguration of an optical network
1409520962Suspension of traffic re-routing during planned network interruption
1419520961System and methods for optical lambda flow steering
1429520960Optical multiplex level and optical channel layer server trails in wavelength switched optical networks
1439520959Optical drop apparatus, optical add apparatus, and optical add/drop apparatus
1449519151Optical multiplexer and transmitter optical subassembly
1459515766Node apparatus
1469515765Distributed optical combining: OBI free, power free
1479515764Integrated control module for communication system on a chip for silicon photonics
1489515763Digital coherent receiver and receiving method of optical signal
1499515739Mitigating noise and OBI in RFoG networks
1509515734System and method for cross-phase modulation noise reduced transmission in hybrid networks
1519515726Providing channel health for a WDM system
1529509435Determination device and determination method
1539509434Margin-based optimization systems and methods in optical networks by intentionally reducing margin
1549509433Aligning and directly optically coupling photodetectors to optical demultiplexer outputs in a multichannel receiver optical subassembly
1559509432Optical spectral-temporal connector
1569509431Method and apparatus for controlling an optical network unit to restart upon completion of downloading new software
1579509430Apparatus for optical signal amplification
1589509429Energy conservation by means of traffic shaping
1599509428Photonic routing systems and methods computing loop-free topologies
1609509412Optical communication system, method for controlling optical communication, and optical transmitter
1619509410High-speed optical transceiver systems and methods
1629509408Optical data transmission system
1639509407Method and device for conveying optical data
1649509400Circuit architecture and system for implantable multi-function and multi-analyte biosensing device
1659509397Method, topology and point of presence equipment for serving a plurlaity of users via a multiplex module
1669509113Transient gain cancellation for optical amplifiers
1679503270Communication device and power saving method thereof in data transmission system
1689503212Station-side apparatus and communication method
1699503211Signal detection circuit and optical transmission equipment
1709503197Spatial division multiplexing in limited power optical communication systems
1719503194External cavity laser based wavelength division multiplexing superchannel transceivers
1729503188Apparatus and method to calculate a noise figure of an optical amplifier for wavelength channels in a partial-fill scenario to account for channel loading
1739503187Apparatus and method for retrieving data from a WDM signal, transmitter and method for transmitting a WDM signal, and WDM system
1749502858Laser array mux assembly with external reflector for providing a selected wavelength or multiplexed wavelengths
1759497524Interface and method for enabling interconnection of a host device and a small-formfactor pluggable module
1769497523Arrangement for deploying co-existing GPON and XGPON optical communication systems
1779497519Twin multicast switch
1789497517ASA: a scalable optical switch
1799497134Methods and apparatus for traffic management in multi-mode switching DWDM networks
1809496980Method for detecting wavelength usage conflicts in an optical network
1819496979Space switch device
1829496961External cavity laser based wavelength division multiplexing superchannel transceivers
1839496959Photonic transceiving device package structure
1849496886System for processing data streams
1859494735AWG supporting multiple frequency bands and channel plans through respective multiple inputs
1869491527Communication network
1879490931Muxponder and method of converting a plurality of tributary optical communications signals having a first bit rate into an optical line signal having a second, higher bit rate
1889490930Optical communication system and method
1899490929Method and apparatus for protecting fiber optic distribution systems
1909490928Arrayed waveguide grating based modular interconnection networks and methods for constructing and applying the same
1919490927Changing the spectral position of a lightpath
1929490908Method and system for receiving an optical-duo-binary signal
1939490907Optical receiver and detection method
1949490902Optical power system for digital-to-analog link
1959490900Method to produce optical module having multiple signal lanes and optical module
1969490899Optical tunable-based transmitter for multiple radio frequency bands
1979490894Coherent probe and optical service channel systems and methods for optical networks
1989485554Methods and systems for using modulation frequencies for optical channel monitoring with periodic optical filtering
1999485553Path computation in wavelength switched optical networks
2009485551Enhanced routing and wavelength assignment techniques for reducing wavelength continuity blocking
2019485550Systems and methods for selection of optimal routing parameters for DWDM network services in a control plane network
2029485083Method and apparatus for time synchronization between nodes
2039485050Subchannel photonic routing, switching and protection with simplified upgrades of WDM optical networks
2049485049Adjusting carrier spacing in a channel
2059485048Methods and devices for space-time multi-plane optical networks
2069485046Optical spot array pitch compressor
2079485023Communication system, main unit, radio access unit and communication method
2089485019Methods and systems for optical channel monitoring with periodic optical filtering of dual polarization signals
2099485018Optical source monitoring system
2109485017Monitoring of optical performance in an optical data transmission network
2119485015Optical layer status exchange over OSC-OAM method for ROADM networks
2129485013Systems and methods for optical dark section conditioning
2139479284Discovery method, optical communication method, and optical communication system
2149479283Channel establishment method and device
2159479282Optical communication apparatus, optical route switching apparatus and network
2169479281Integrated control for silicon photonics
2179479280Extended cavity fabry-perot laser assembly capable of high speed optical modulation with narrow mode spacing and WDM optical system including same
2189479262Method and system for the monolithic integration of circuits for monitoring and control of RF signals
2199479261System and method for mitigating four-wave-mixing effects
2209479259Multi-channel optical transceiver module including thermal arrayed waveguide grating multiplexer and athermal arrayed waveguide grating demultiplexer
2219479254Distributed base station signal transmission system and communication system
2229479253Optical communication device and optical communication method
2239479249Optical transmission system and optical transmission device
2249478935Optical amplifier, wavelength multiplexing optical transmission system, and program
2259473836Maintaining channel-invariant optical network unit (ONU) equalization delay in a passive optical network
2269473835Optical module and optical device applicable to optical module
2279473834Routing for super channel for bandwidth variable wavelength switched optical network
2289473263Method and system for removing a pilot tone from an optical signal
2299473262Optical communication apparatus, optical communication system, and path control method
2309473246Method and tuning device for tuning a tunable optical transmitter to a predetermined target wavelength
2319470846Wavelength division multiplexing with multi-core fiber
2329467758Testing system and method
2339467757Wavelength selective switch
2349467335Method, terminal, and system for fiber network management
2359467244Transmission apparatus and transmission system
2369462358Apparatus and method for an optical network
2379461770Method and system for floating grid transceiver
2389461769Optical demultiplexer and method of controlling an optical demultiplexer
2399461742Feedback-based configuration of a hybrid fiber-coaxial network
2409459404Optical router using interconnected photonic crystal elements with specific lattice-hole geometry
2419455795Optical network switching using N:N transponder through time-domain multiplexing and burst mode access
2429455787Light emitting diode (LED)-based multi-bitrate data links
2439455782Monitoring a multiplexed laser array in an optical communication system
2449455781Method and device for determining whether a configuration of an optical transmission interface has to be adjusted
2459455779Method and apparatus for performing path protection for rate-adaptive optics
2469455778Method and system for protecting against communication loss in an optical network system
2479455546Raman-based static and dynamic tilt control in an optical system
2489451453Architecture for reconfigurable quantum key distribution networks based on entangled photons directed by a wavelength selective switch
2499450889Method, apparatus and system for processing flexible-rate signal
2509450865Open shortest path first extensions in support of wavelength switched optical networks
2519450699Optical drop device, optical drop method, and optical add device
2529450698Optical transmission device, optical transmission system, and optical transmission method
2539450697Apparatus and method for distributed compensation of narrow optical filtering effects in an optical network
2549450696Photonic compressive sensing receiver
2559445166Assignment of wavelengths to optical signals in an optical network
2569444573Transmission device and optical transmission system
2579444572Transmission device and transmission method
2589444553Tunable coherent optical receiver and method
2599444550Flexible virtual optical network provisioning using distance-adaptive modulation
2609444549Systems and methods for burst detection in a CATV network
2619444548Wavelet-based processing for fiber optic sensing systems
2629444218Compact WDM optical modules
2639438371Linear dispersion polarization-time codes and equalization in polarization multiplexed coherent optical system
2649438370Margin-based optimization systems and methods in optical networks to unblock superchannels
2659438369Margin-based optimization systems and methods in optical networks for capacity boosting
2669438368Wavelength negotiation method and apparatus of multi-wavelength passive optical network, and multi-wavelength passive optical network system
2679438367Method and system for providing an external optical data packet to a destination node of a packet optical network
2689438365Client signal mapping circuit and mapping method
2699438349Optical module, line card and optical communications system
2709438343Transmitting device, communication system, and method for transmission level control
2719438342Methods, systems, and devices for integrating wireless technology into a fiber optic network
2729438336Characterization of non-ASE noise on optical signals
2739438004Optical pumping and powering in spatially multiplexed transmission links
2749435958Optical demultiplexing system
2759432753Method and apparatus for link sharing among multiple EPONs
2769432752Optical transmission system
2779432751PTP transparent clock system upgrade solution
2789432141Optical network unit, method for processing data in an optical network and communication system
2799432140Flexible grid TWDM-PON architecture and intelligent set-up for TWDM-PON
2809432139Optical module having composite prism to multiplex optical beams
2819432124Inter-channel interference management for optical super-channels
2829432122Optical networking unit (ONU) packaging
2839432113Optical transmission device
2849431791Multi-section heterogeneous semiconductor optical amplifier
2859430437PCIE lane aggregation over a high speed link
2869426545Dynamic intelligent bidirectional optical access communication system with object/intelligent appliance-to-object/intelligent appliance interaction
2879425919Operation and stabilization of mod-MUX WDM transmitters based on silicon microrings
2889425918Flexible TWDM PON with load balancing and power saving
2899425917High data rate long reach transceiver using wavelength multiplexed architecture
2909425903Built-in redundancy scheme for communication system on chip
2919425897Transmission apparatus, transmission system, and transmission method
2929420359Dynamic wavelength virtualization and/or on-demand flow provisioning in optical networks
2939420357Method and apparatus for selecting wavelength by wavelength tunable optical receiver
2949419743Optical subchannel routing, protection switching and security
2959419742Optical communication system having tunable sources
2969419741Optical transmission system, management device, and signal adjustment method
2979419719Transmitter apparatus and method
2989419717Replaceable transmitting module and optical transceiver having the same
2999419716Variable color data transmission
3009419708Live monitoring of raman and fiber degradation in DWDM networks using in-service OTDR
3019419412Integrated laser and method of fabrication thereof
3029417396Optoelectronic switch
3039414134Secure wavelength selective switch-based reconfigurable branching unit for submarine network
3049413640Method and apparatus for routing traffic using asymmetrical optical connections
3059413520Optical transceiver and method with channel binding, clock forwarding, and integrate-and-dump receivers
3069413488Method and apparatus for optical transmitter and receiver redundancy within a directionless optical node
3079413487System and method for providing packetized video over an optical network
3089413486Method for complementing dynamic resource-level path computation
3099413485Network followed by compute load balancing procedure for embedding cloud services in software-defined flexible-grid optical transport networks
3109413484System and method for passive optical network communication
3119413483Passive optical network digital subscriber line convergence architecture
3129413482Method for transmitting and method for receiving a binary data stream, transmitter and receiver for carrying out the method
3139413468Optical combiner energy harvesting
3149413466Distributed pon transceiver architecture
3159413465Optical transceiver and optical output level control method
3169413456Non-linear optical receiver
3179407398System and method using cascaded single partity check coding
3189407396Wavelength multiplexing apparatus and method
3199407395Optical network unit (ONU) wavelength self-tuning
3209407371Optical multiplexer/demultiplexer
3219405071Delay line interferometer multiplexer
3229401774Limited wavelength all-to-all wavelength routing network configuration
3239401773Compact multi-channel WDM devices for high-speed data communications
3249401766Quantum communication network
3259401764Optical network unit
3269401761Method and device for determining whether a configuration of an optical transmission interface has to be adjusted
3279401447Semiconductor light-receiving element and method for manufacturing same
3289397898Digital link viewer
3299397786System and method including modified bit-interleaved coded modulation
3309397778Tunable optical network unit for multi-wavelength passive optical network system and operating method thereof
3319397777Method and apparatus for authentication in passive optical network
3329397776Constant-capacity physical resource blocks for upstream transmissions over coax
3339397755Clock recovery method for ultra dense WDM systems
3349397749Method and apparatus for performing an automatic power adjustment for an optical signal
3359397746Tuning external cavity lasers within CWDM transmitters for temperature insensitivity and superchannel construction
3369392348Path computation element protocol (PCEP) operations to support wavelength switched optical network routing, wavelength assignment, and impairment validation
3379392347Joint signal-routing and power-control for an optical network
3389391764Antenna synchronization for coherent network MIMO
3399391734Network system
3409391733Method, system, and apparatus for transmitting data information by using optical signals
3419391732Optical transport having full and flexible bandwidth and channel utilization
3429391731Nyquist wavelength division multiplexing system
3439391724Frequency sub-band coding of digital signals
3449391713High brightness dense wavelength multiplexing laser
3459391712Upstream optical transmission assignment based on transmission power
3469391711Integrated control module for communication system on a chip for silicon photonics
3479391709Optical transmitter module
3489391706Tuning device for pluggable optical transceivers
3499391703Transmission of a data stream using enhancement layers of multiple hierarchically modulated optical waves
3509391696Tuning external cavity lasers within CWDM transmitters for temperature insensitivity and superchannel construction
3519391693Protection for distributed radio access networks
3529391426Raman amplifier and gain control method
3539385943Encoding and processing of signaling messages for ODU SMP
3549385830Transmitter module outputting wavelength multiplexed light
3559385829Optical transceiver having optics with rotated optical path
3569385814Wavelength tunable array for data communications
3579385811Optical communication systems and methods
3589385809Optical interface module for coherent reception, optical memory module, and optical memory system comprising same
3599380362Out-of-band management of fiber optics systems and devices
3609380361Wavelength selective switch and wavelength selection method
3619380360Wavelength selective switch and wavelength selection method
3629379840Energy efficient dynamic bandwidth allocation for optical networks
3639379839Optical transmission device and optical transmission method
3649379838Optical communication system having tunable sources
3659379830Digitized broadcast signals
3669379820Method and device for receiving multi-carrier optical signal
3679379815Electro-optical payload for high-bandwidth free space optical communications
3689379812WDM PON with non tunable legacy ONUs
3699374260Method and apparatus for directly detected optical transmission systems based on carrierless amplitude-phase modulation
3709374187Distributed antenna system and method
3719374186Method and apparatus for construction of compact optical nodes using wavelength equalizing arrays
3729374173Integrated control for silicon photonics
3739374164Optical access system
3749372830System and method to analyze impairment of optical transmissions due to combined nonlinear and polarization dependent loss
3759369786Optical transmission device and optical transmission network system
3769369784Optical arbitration device and method in a network-on-chip system
3779369321Increasing sensor data carrying capability of phase generated carriers
3789369228Method and apparatus for heterodyne coherent detection
3799369227Protected optical single-fiber WDM system
3809366819Reduced crosstalk for bi-directional arrayed waveguide gratings
3819363585Operations administration and management service for an optical layer of a communication network
3829363583System and method for reducing the stimulated Raman scattering crosstalk in channel monitoring
3839363582Optical beam routing apparatus and methods
3849363032Flexible optimization of the signal-to-noise ratio for ultra dense coherent WDM systems
3859363027Remote modulation of pre-transformed data
3869363022Optical transmission apparatus and analog-to-digital conversion apparatus
3879360296System for calculation of material properties using reflection terahertz radiation and an external reference structure
3889357278In-skin wavelength division multiplex (WDM) path computation
3899356870Contention handling in SMP based networks
3909356726Modulo channel assignment technique in optical point to multipoint networks to prevent optical beat interference
3919356703High-speed low-jitter communication system
3929351056Planning of optical connections in a WDM optical network
3939351054Device and a method for merging optical components associated with one wavelength into a merged optical component
3949350482Wavelength and bandwidth allocation method
3959350481Transport functions virtualization for wavelength division multiplexing (WDM)-based optical networks
3969350480Relay device, relay method, and optical communication system which uses relay device
3979350479Apparatus and method for monitoring wavelength tunable optical filter
3989350453Optical access network having emitter-free customer premise equipment and adaptive communication scheduling
3999350452System and method for distributing optical signals
4009350447Systems and methods for protecting optical networks from rogue optical network terminals
4019348096Passive distribution system using fiber indexing
4029348091Multiplexer/demultiplexer based on diffraction and reflection
4039344779Method and apparatus for space-division multiplexing systems
4049344214Optical wavelength path rearranging method, computer product, optical transmission managing apparatus, and optical transmission apparatus
4059344213Method for tuning a tunable optical transmitter in an optical WDM transmission system and corresponding optical WDM transmission system
4069344191Systems and methods for capacity changes in DWDM networks including flexible spectrum systems
4079344188Device, remote node and methods for PON supervision
4089344187Apparatus and methods for enabling recovery in optical networks
4099341785Wavelength division multiplexing with multi-core fiber
4109338529Routing and bandwidth assignment for flexible grid wavelength switched optical networks
4119337959Defect propagation of multiple signals of various rates when mapped into a combined signal
4129337950Service sensitive resilient IPoWDM network and method of operation
4139337949Control system for an aerially moved payload
4149337948System and method for performing high-speed communications over fiber optical networks
4159337939Optical IO interconnect having a WDM architecture and CDR clock sharing receiver
4169337935Coded modulation for small step-size variable spectral efficiency
4179337933Integrated optical network unit
4189337924Circuit architecture and system for implantable multi-function and multi-analyte biosensing device
4199337921Method and apparatus for monitoring mechanical fiber stress of optical fiber spans
4209335505Fiber distribution device
4219332326Optical transmission device and monitoring method of optical signal
4229332324Method and apparatus for efficient and transparent network management and application coordination for software defined optical switched data center networks
4239332323Method and apparatus for implementing a multi-dimensional optical circuit switching fabric
4249331844System and method for network synchronization and frequency dissemination
4259331812Round trip time aware dynamic bandwidth allocation for ethernet passive optical network over coaxial network
4269331811Optical communications networks, optical line terminations and related methods
4279331810Method and system for providing dedicated service on a passive optical network
4289331809DWA control in an OLT with decrease in margin of bandwidth utilization caused by bandwidth reallocation minimized
4299331808Optical transmission apparatus and optical transmission method
4309331807Service edge hub device and methods in an optical network node
4319331788Communication device and communication method
4329331783Method for compensating chromatic dispersion and associated equipment
4339331782Optical transmission system
4349329414Methods using an intense control light at a first wavelength to cause a whispering gallery mode resonator to self tune at a second wavelength, and apparatus employing such methods such as optical pass/stop band filters and optical demultiplexers
4359326050Wavelength selective switch and method of manufacturing same
4369326049Multi-flow optical transceiver, multi-flow optical transponder and multi-flow optical node
4379325447Methods and systems for delivery of multiple passive optical network services
4389325446Method of configuring an optical path, a path computation engine and an optical communications network node
4399325445Demultiplexing device for opto-electronic transceiver
4409325422Integrated control module for communication system on a chip for silicon photonics
4419325419Wavelength control of two-channel DEMUX/MUX in silicon photonics
4429325415Method and system for wireless transmission of analog signals between antenna and baseband processor
4439325413Apparatus and methods for enabling recovery from failures in optical networks
4449325412Transceiver system, transmission device, reception device, and control method of transceiver system
4459323065Optical multiplexer and demultiplexer and a method for fabricating and assembling the multiplexer/demultiplexer
4469319757Optical wavelength-selective switch with a bank of wavelength convertors
4479319169Orthogonally-combining interleaving filter multiplexer and systems and methods using same
4489319131Adding new alternative paths for restoration in WSON network
4499313561Integrated driver redundancy for a silicon photonics device
4509312981Distributed spatial mode processing for spatial-mode multiplexed communication systems
4519312980Communication fabric for a cluster of network hosts
4529312979Channel estimation in optical communication based on orthogonal frequency division multiplexing
4539312963Optical transmission converter, memory system comprising same, and related method of operation
4549312960Reducing power requirements for optical links
4559312953System and method for performing in-service optical network certification
4569310564Multiport tunable optical filters
4579306700Method and device for transmitting optical signals
4589306699Wavelength-selective switch array
4599306698Methods and apparatuses for DWDM multi-mode switching router and dynamic multi-mode configuration and reconfiguration
4609306697System and method of compensating for spectral excursion
4619306671Thermally isolated multi-channel transmitter optical subassembly and optical transceiver module including same
4629306670Optical coupling/splitting device, two-way optical propagation device, and optical-transmit-receive system
4639306663Controller, a communication system, a communication method, and a storage medium for storing a communication program
4649301090Light device, communication unit and positional information management system
4659301030Telecommunications module
4669301028Method and system for implementing alternate routes in optical transmission network of wavelength switched optical network (WSON)
4679301027Remote optical demarcation point protection
4689300429Method and apparatus for transporting a client signal over an optical network
4699300428Extending routing protocols to accommodate wavelength switched optical networks
4709300427Upstream scheduling in a passive optical network
4719300426Transmission apparatus, transmission system, and method of controlling average optical input power
4729300425DWDM hybrid PON LT configuration
4739300403Signal transmission processing method and apparatus and distributed base station
4749300399Optical communication systems and methods
4759297960Multiport tunable optical filters
4769294826Wavelength selection switch system and method for controlling wavelength selection switch
4779294216Optical OFDM transmission
4789294215Method of operating an optical network element and optical network element
4799294192Method, system, and transceiver device for bi-directionally transmitting digital optical signals over an optical transmission link
4809294146System for transmission over a multi-mode and/or multi-core optical fiber
4819288559Multi directional multiplexer
4829288006Demultiplexing high-order to low-order ODU signals in an optical transport network
4839287993RF channelizer based on parametrically generated combs derived from a single master seed
4849287992Wavelength division multiplexing transmission device
4859287986Large capacity optical transceiver module
4869287969Protection channel provisioning method and node equipment
4879281937Control timing synchronization method, optical transmission system, and optical transmission apparatus
4889281914Apparatus and method for designing a network transmitting wavelength multiplexed optical signals
4899281913Signal detection circuit and optical transmission equipment
4909281899Wavelength stabilizer for TWDM-PON burst mode DBR laser
4919281655Transmission link with multiple order Raman pumps
4929276870Switching node with load balancing of bursts of packets
4939276701Apparatus and method for communicating FEC mode and alarming mismatch
4949276697Network evaluation apparatus and network evaluation method
4959276696Systems and methods for channel additions over multiple cascaded optical nodes
4969276695Method and apparatus for construction of compact optical nodes using wavelength equalizing arrays
4979276694Fault recovery in branched optical networks
4989276690Distributed electrical cross device, and system and method thereof for implementing sub-network connection (SNC) cascade protection
4999276675Apparatus and method for transferring an optical signal in a wireless visible light communication system
5009271058Communications network
5019270538Network design apparatus and network design method
5029270406Communication method, optical communication system, station-side optical-line terminal apparatus, and user-side optical-line terminal apparatus
5039270405Directionless optical architecture and highly available network and photonic resilience methods
5049270383Frequency and phase compensation for modulation formats using multiple sub-carriers
5059270379Optical nyquist superchannel generation using microwave low-pass filtering and optical equalization
5069270377High-speed optical transceiver for infiniband and ethernet
5079270376Method of allocating bandwidth in an optical network
5089270374Providing digital data services in optical fiber-based distributed radio frequency (RF) communications systems, and related components and methods
5099270370System and method for pilot tone modulation by data bias
5109270367Method and system for automatically discovering ODUflex bandwith lossless adjustment capability
5119270366Impairment aware path computation element method and system
5129265968System for generating non-homogenous biologically-adjusted light and associated methods
5139264344Method and apparatus for providing a route recommendation
5149264170Transponder and optical transmission apparatus
5159264169Method for the adaptive configuration of the transmission spectrum in WDM-PONs
5169264168Communications network using adaptable FEC
5179264167Optical add drop multiplexer
5189263846Systems and methods for amplifying space-multiplexed optical signals
5199261754Parallel and WDM silicon photonics integration in information and communications technology systems
5209261635Rotator external to photonic integrated circuit
5219258628Method and apparatus for transferring WDM signals between different wavelength division multiplexed optical communications systems in an optically transparent manner
5229258174Server-layer path negotiation between client and server network layers
5239258076Amortization of expensive optical components
5249258062Optical amplification device and optical amplification method
5259258061Individual information in lower and upper optical sidebands
5269253111Bandwidth distribution based on prior granting cycles
5279252913Systems and methods for optical dark section conditioning
5289252912Method for routing and spectrum assignment
5299252911Flexible remote node (RN) for dynamic traffic allocation in passive optical networking (PON) and mobile backhaul (MBH) applications
5309252910Expandable multicast optical switch
5319252909Single-rotator latent space switch with an embedded controller
5329252885Method for manufacturing wavelength division multiplexing transmission apparatus and wavelength division multiplexing transmission apparatus
5339252840Optical signal processing apparatus, transmission apparatus, and optical signal processing method
5349247327Suurballe-based cloud service embedding procedure in software-defined flexible-grid optical transport networks
5359247325Hybrid electro-optical distributed software-defined data center architecture
5369246735Equalizing a signal modulated using a 5QAM modulation format
5379246704Network planning and optimization of equipment deployment
5389246628Hybrid passive optical network system
5399246627Joint optimization procedure for routing and wavelength assignment with combined dedicated shared protections in multi-cable multi-fiber optical WDM networks
5409246626Network operating system with distributed data architecture
5419246625Providing wavelength connectivity information to a network
5429246624Low noise optical phase-sensitive amplifier for dual-polarization modulation formats
5439246623Method and apparatus for routing traffic using asymmetrical optical connections
5449246622Semiconductor optical element, optical module and method of manufacturing semiconductor optical element
5459246599Coherent optical receiver, apparatus and method for detecting interchannel skew in coherent optical receiver
5469246580Optical add-drop multiplexer (OADM) device
5479246559Distributed antenna system for MIMO signals
5489244328Optical modulator and optical modulation control method
5499241203Apparatus for controlling a transmission path
5509240857System, method and fiber-optic transceiver module for bandwidth efficient distortion-tolerant transmissions for high-bit rate fiber optic communications
5519240856Network system, network apparatus, and method of controlling network
5529240855Fiber diagnosis system for point-to-point optical access networks
5539240854Communication system, station-side communication device, user-side communication device, communication method, and control device
5549236973Linear dispersion polarization-time codes and equalization in polarization multiplexed coherent optical system
5559236972Optical impairment aware path computation architecture in PCE based network
5569236971Bandwidth allocation device and bandwidth allocation method
5579236969Super optical channel data unit signal supported by multiple wavelengths
5589236953Coordination systems and methods between data control plane and photonic control in optical networks
5599236952Detecting and correcting cycle slips to minimize system penalty
5609236949Laser transceiver with improved bit error rate
5619236945Thermally shielded multi-channel transmitter optical subassembly and optical transceiver module including same
5629236941System for implementing a radio over fiber transmission in a passive optical network
5639235100Apparatus for dual-polarization QAM and optical communications system using the same cross-reference to related application
5649231729Resource allocation in PON networks via wave-front multiplexing and de-multiplexing
5659231726Extending path computation element protocol to accommodate routing and wavelength assignment in wavelength switched optical networks
5669231725Passive optical network optical network terminal apparatus and configuration method
5679231724Method for operating an optical transmission system
5689231696Methods and apparatuses for supervision of optical networks
5699229163Butterfly optical network with crossing-free switches

2015

5709226051Method for optimizing optical network
5719225614Service and application layer optimization using variable rate optical transmission
5729225570Method of allocating upstream bandwidth resource and method of transmitting upstream data in orthogonal frequency division multiple access-open optical subscriber network
5739225460Whole fiber switched p-cycles
5749225459Optical transmission system, optical transmission apparatus, signal conditioning program, and signal conditioning method
5759225458Wavelength-selective cross-connect device having a variable number of common ports
5769225457Overlapping spectrum in optical communication
5779225456Post-transient gain control of optical amplifiers
5789225455Digital non-linear compensation in optical communication systems
5799225454Aggregation and de-agreggation of bandwidth within data centers using passive optical elements
5809225453Optimizing optical systems using code division multiple access and/or orthogonal frequency-division multiplexing
5819225428Method and system for alignment of photodetector array to optical demultiplexer outputs
5829225427Transmitter and receiver for transceiving optical signals
5839225421OFDMA overlay on legacy passive optical networks using optical nyquist filtering
5849225417Managing alternate site switching in an optical communication system
5859225141Multi-core amplification optical fiber and multi-core optical fiber amplifier
5869223090Bidirectional wavelength cross connect architectures using wavelength routing elements
5879222830Optical control sensor system with driver that switches frequencies of a set of different orthogonal signals and modulates the intensity of light
5889219697Multiple petabit-per-second switching system employing latent switches
5899219567Converged PON for TDMA-PON service based on OFDMA-PON
5909219566Wavelength management in multiple-wavelength passive optical networks
5919219565Optical transmission apparatus and dummy light inserting method
5929219549WDM Mux/DeMux employing filters shaped for maximum use thereof
5939219523Method and device for transmitting an optical digital WDM signal over an optical transmission link or a passive optical network
5949219345Optical amplification control apparatus and control method of the same
5959215032Multi-channel optical transmitter assembly and methods of making and using the same
5969215031Determining least-latency paths across a provider network utilizing available capacity
5979215030Allocation of spectral capacity in a wavelength-division multiplexing optical network
5989215029Path selecting method and apparatus
5999215028Photonic switch chip for scalable reconfigurable optical add/drop multiplexer
6009214790Filtered laser array assembly with external optical modulation and WDM optical system including same
6019210037Method, apparatus and system for interconnected ring protection
6029209927Method and apparatus for generation of frequency- and phase-locked subcarrier
6039209926Communication system and method therefor
6049209925Passive optical networking redundancy via two or more auto sensing optical line terminals
6059209900Method and apparatus for digital polarization scrambling in coherent optical communication systems employing both transmit and receive digital signal processing
6069204209Optical transmission apparatus
6079203544Optical communication system, device and method employing advanced coding and high modulation order
6089203543Passive optical networks
6099203542Optical node for switching signals between optical fibers
6109203517Signal transmission method, signal receiving method, passive optical network PON device, and PON system
6119201286Method and apparatus for wavelength selective switch
6129197950Optical branching/synthesizing device
6139197356Distributed spatial mode processing for spatial-mode multiplexed communication systems
6149197355Drop port based shared risk link group systems and methods
6159197354Concatenated optical spectrum transmission systems and methods
6169197353Wavelength selection and configuration method for multi-wavelength optical communication system
6179197352Increasing the capacity of a WDM-PON with wavelength reuse
6189197351Method of selecting wavelength of optical network unit in passive optical network
6199197350Systems and methods for routing and wavelength assignment for network virtualization
6209197349Method of operating a primary optical node and a secondary optical node
6219197348Optical transmission device and optical transmission method
6229197347Optical transmission system and noise suppression method
6239197346Wavelength division multiplexing module
6249197345Receiver optical module for receiving wavelength multiplexed optical signals and method to assemble the same
6259197326Optical wavelength comb generator device
6269197325Optical transceiver
6279191270Path segment protecting p-cycles
6289191145Communications apparatus, multiplex communications apparatus, communications system, and communication method
6299191143Optical transmission device and optical transmission device control method
6309191142Optical network unit having power saving function and power saving method thereof
6319191141Overlapping spectrum in optical communication
6329191140Passive optical networks with mode coupling receivers
6339191120Method and system for optical impairments mitigation for high-speed optical communication systems
6349191117High-speed optical transponder systems
6359191116Orthogonal frequency division multiple access-passive optical network comprising optical network unit and optical line terminal
6369191101Optical line transmission protection system and method
6379188831Compact wavelength-selective cross-connect device having multiple input ports and multiple output ports
6389188741Adjustable multiple-channel optical switch
6399185474Wavelength path switching method, optical communication system, optical communication device, optical repeater, and network management device
6409184962Distributed antenna system for MIMO signals
6419184873Ultra-high-speed optical transport based on adaptive LDPC-coded multidimensional spatial-spectral scheme and orthogonal prolate spheroidal wave functions
6429184867Transmission control device, transmission system, and transmission method
6439184866Distributed optical block multiplexer topologies
6449184865Optical switch, optical demodulator, and optical demodulation method having feedback control of temperature regulator based on optical detector output
6459184864Optical transmission system, optical transmitting apparatus, and optical receiving apparatus
6469184860Time synchronization method and system, and node device
6479184849Bidirectional submarine repeater using unidirectional amplification
6489184848Optical repeater amplifier insertion and removal technology
6499184846Pluggable optical host and network I/O optoelectronic module
6509184842Apparatus for communicating a plurality of antenna signals at different optical wavelengths
6519182649Optical-signal processing apparatus, optical transmission method, receiver, and optical network system
6529182550Dispersionless optical tap filter in bi-directional multimode fiber optic link
6539178646Exchange device
6549178645Wavelength path reallocation method and upper layer path reallocation method
6559178644Spectral encoding of an optical label or destination
6569178643Processing data in an optical network
6579178642Receivers and transceivers for optical multibus systems
6589178641Suppression of non-linear effects in low dispersion optical fibers
6599178616Station-side apparatus and frame transfer apparatus
6609178612Method and equipment for operating a coherent optical packet receiver
6619173269Lighting system for accentuating regions of a layer and associated methods
6629173013Method and device for adjusting a laser in an optical network
6639172492Time/wavelength-division multiplexed passive optical network (TWPON)
6649172491Method, topology and point of presence equipment for serving a plurality of users via a multiplex module
6659172490Virtual wavelength networks
6669172489Discovery of an adjacent network element within a network data plane
6679172488Optical terminating apparatus for optical path network
6689172475Method and apparatus for equalizing link performance
6699172466Method for switching an optical data stream, computer program product and corresponding storage means and node
6709170377Optical interconnect
6719167321Optical router and terminal devices therewith based on dynamic wavelength assignment
6729166888Configuration data
6739166727Optical communication system, optical network management apparatus and optical network management method
6749166726Diverging device with OADM function and wavelength division multiplexing optical network system and method therefor
6759166725Optical network element and optical transmission system
6769166724Optical network and optical path setup method
6779166723Network fragmentation measurement in an optical wavelength division multiplexing (WDM) network
6789166722Method and apparatus for increasing a transmission performance of a hybrid wavelength division multiplexing system
6799166721Reconfigurable optical transmitter
6809166704Integrated control for silicon photonics
6819166700Tunable receiver
6829166691Method for coupling an emitting device to a frequency splitter in an optical passive network
6839166688Network device of optical network terminal and method of adjusting power of optical signals
6849166684Integrated commercial communications network using radio frequency and free space optical data communication
6859166681Determining asymmetries in a communication network
6869166679Optical amplification apparatus, method for controlling same, optical receiver station, and optical transmission system
6879164300Reconfigurable optical networks
6889161107Switching for a MIMO-OFDM based flexible rate intra-data center network
6899160481Optical polarization multiplexing using laser arrays
6909160480Symmetric coherent OFDMA-PON configuration with low-speed ONU-side
6919160479Client signal mapping circuit and mapping method
6929160478Reconfigurable optical add/drop multiplexor and optical switching node
6939160477Virtual networking embedding procedure in an optical wavelength division multiplexing (WDM) network
6949160455External cavity laser array system and WDM optical system including same
6959160454Hamming coded modulation
6969160445Method and system for fault recovery in an optical network
6979160135Optical amplifying apparatus and optical transmission system
6989154335Method and apparatus for transmitting data on a network
6999154257Frequency assignment method and apparatus
7009154256Clock phase detection in the frequency domain
7019154255Single-rotator latent space switch with an external controller
7029154254Wavelength path multiplexing/demultiplexing apparatus and wavelength path multiplexing/demultiplexing method
7039154227Port monitoring device and port monitoring method
7049154220Large-capacity fiber optical switching device and optical transmission system
7059151902Wavelength selective switch
7069148247Frequency-diversity MIMO processing for optical transmission
7079148246Transponder and related network node for an optical transmission network
7089148228Optical signal transmitting device, optical signal transmitting method, frequency fluctuation suppressing device and frequency fluctuation suppressing system
7099148223Ethernet private local area network systems and methods
7109147997Optical semiconductor device
7119146372Fiber distribution device
7129146355Optical sources employing self-seeding and modulation averaging
7139143846Wavelength-multiplexed optical transmission device, wavelength-multiplexed optical transmission system, wavelength-multiplexed optical transmission method
7149143580Brokering and provisioning in high-speed networks
7159143264Optical transmission device and optical transmission system
7169143263Method and system for monitoring performance of wavelength path, and node device
7179143262Optical packet transmitting/receiving system
7189143261Optical module
7199143260Optical transmission system, method of adjusting optical transmission device, and non-transitory computer-readable medium
7209143242Optical signal demodulator, optical signal demodulating method, and optical add-drop multiplexer
7219143234Optical communication systems and methods
7229140852High-density fiber coupling and emission/detection system
7239137590OSPFTE extension to support GMPLS for flexible grid
7249136972Controlling an optical transmitter that supports multiple modulation formats and baud rates
7259136971Method for configuring transmission interfaces of devices communicating via a band-pass filter
7269136970Network protection against rogue transmitter
7279136969Spectral encoding of an optical label or destination
7289136968Time and wavelength division multiplexing--passive optical network (TWDM-PON) system and communication link method thereof
7299131289Software-defined optical network
7309130692Reconfigurable optical add/drop multiplexer network element for C-band and L-band optical signals
7319130691Optical burst switched network nodes
7329130681Reducing phase noise associated with optical sources
7339130678High speed signal generator
7349130677Communication system, station-side optical line terminating apparatus, user-side optical line terminating apparatus, control apparatus, and communication method
7359130673System for the certification of a passive optical network and for the detection of problems and faults in the last fibre legs
7369130671Apparatus for monitoring failure positions in wavelength division multiplexing-passive optical networks and wavelength division multiplexing-passive optical network systems having the apparatus
7379130668Signalling in optical transmission networks
7389128347Optical hybrid mixer without waveguide crossings
7399128234Multi-core optical fiber and optical transmission system
7409124958Multiband reconfigurable optical add-drop multiplexing with converged signal addition and removal
7419124385Optical connection hitless bandwidth or spectrum resizing
7429124384Method for automatic wavelength allocation in a wavelength division multiplexed fiber optic communications network
7439124383High capacity fiber-optic integrated transmission and switching systems
7449124382Transmission device, transmission system, and method for adjusting passband
7459124371Apparatus to control carrier spacing in a multi-carrier optical transmitter
7469124369Multi-direction variable optical transceiver
7479124368Transceiver for use in fibre network
7489118984Control plane for integrated switch wavelength division multiplexing
7499118982Optical line terminal (OLT) optical module adapted to perform optical unit network (ONU) functionality
7509118436PON system and subcarrier assigning method
7519118435Integrated passive optical network (PON) system
7529118434Optical transmitting apparatus and optical detecting apparatus
7539116313Silicon photonics structures with pluggable light sources
7549112640Optical network unit, optical access network and a method for exchanging information
7559112639Apparatus for transmitting/receiving variable-wavelength optical signal
7569112638OSS support for control plane technology
7579112637Optical transmission device and method
7589112636Add and drop switch/aggregator for optical communications networks
7599112635Methods and apparatus for a passive access subnetwork
7609112617Method and device for monitoring a detachable fiber-optic connection, especially in a fiber-optic transmission device or system
7619112613Passive optical network reach extender based on wavelength tunable optical module and method thereof
7629112610Optical network unit registration method
7639112600Wavelength tuning time measurement apparatus and method for multi-wavelength passive optical network
7649106983Reconfigurable branching unit for submarine optical communication networks
7659106362Optical unit for wavelength selecting switch and wavelength selecting switch
7669106361Passive wavelength division multiplexing device for automatic wavelength locking and system thereof
7679106360Methods and apparatus for traffic management in multi-mode switching DWDM networks
7689106359Optical network system, optical multiplexing apparatus, and receiving apparatus
7699106354Optical frequency-division multiplexer, optical communication system, and optical frequency-division multiplexing method
7709106335Automatic wavelength recognition apparatus and method
7719106044System and method for generating a synchronisation control signal
7729103991Multi-pole optical signal switch
7739100886Pico cell error recovery in HetNet
7749100730Establishing connections in a multi-rate optical network
7759100139Optical communication link employing coherent detection and out of band channel identification
7769100138Method and system for automatic topology discovery in wavelength division multiplexing (WDM) network
7779100137Crosstalk reduction in optical networks using variable subcarrier spectral allocation
7789100128Optical burst receiver with a configurable AC and DC coupling interface
7799100121Link setup method for wavelength division multiplexing wavelength passive optical network(WDM PON) system
7809099833Multiplexer having ASE suppression
7819097580Multiport tunable optical filters
7829094842Systems and method for orthogonal frequency divisional multiplexing
7839094166Method and apparatus for using direct wireless links and a central controller for dynamic resource allocation
7849094150Method for registering optical network unit in telecommunications network and optical network unit therefor
7859094149Media stream distribution system
7869094148Adaptive optical amplifier for WDM systems
7879094147System control of repeatered optical communications system
7889094121Optical transmission apparatus
7899088383Transmitting apparatus, receiving apparatus, optical frequency division multiplex transmission system, and optical signal communication method
7909088382Optical line terminal of passive optical network, and method for controlling upstream band using the same
7919088371WDM telecommunications link with coherent detection and optical frequency comb sources
7929088358OBI detection and avoidance in broadband devices
7939088354Power save mode for lightpaths
7949084034Method and system for realizing power saving mechanism management between optical network unit (ONU) and optical line terminal (OLT)
7959083485Defragmentation of optical networks
7969083484Software defined networking photonic routing systems and methods
7979083469Device and method for controlling lasing wavelength of tunable laser, and a wavelength division multiplexed-passive optical network having the same
7989083459Optical transmission system, method of testing optical transmission system, and non-transitory computer-readable medium
7999083152Semiconductor optical amplifier device and optical matrix switch
8009077482High-throughput routing in an optical network having a mesh topology
8019077481Method and apparatus for dynamic wavelength allocation in wavelength switched optical networks
8029077480Demand accommodation designing system and method
8039077479Method and system for adjusting network interface metrics
8049077478Wavelength and spectrum assignment within packet-optical networks
8059077477Continuous-mode wavelength conversion apparatus, burst-mode wavelength conversion apparatus, remote termination apparatus and central office termination apparatus
8069077476Self-characterization tunable optical receiver
8079077475Optical packet switching system and method for controlling the peak power
8089077474Make before break optical mesh network element
8099077473Optical network apparatus for self-seeded communications
8109077470Optical transmission system using cross phase modulation
8119077469Adapting apparatus and method
8129077450Wavelength division multiplexing with multi-core fiber
8139071405Optical line terminal, optical network unit and passive optical network system
8149071394Remote timing communications
8159071381Use of polarization for differentiation of information
8169071380Multi-point control protocol proxy architecture in a network with optical and coaxial domains
8179071379Optical branching and insertion device, network management device, and wavelength selective switch
8189071378Superimposed signal detection circuit and optical node equipment
8199071361Extended reach XFP transceiver with integrated forward error correction
8209071351Optical switch
8219071350Optical receiver implemented with semiconductor amplifier
8229069224Optical modulator and optical modulation control method
8239066166Amortization of expensive optical components
8249065589Apparatus and method for operating a wavelength division multiplexing access network
8259065588Communications system having remotely managed and configured optical network unit
8269065587Optical multiplexing using laser arrays
8279065582Optical architecture and channel plan employing multi-fiber configurations for data center network switching
8289065572Robustly stabilizing laser systems
8299065568Fiber optic network adjustment
8309065565DWDM fast lightpath setup using network status information
8319065247Differentiation of power and channel count changes in optically amplified links
8329060215Network specific routing and wavelength assignment for optical communications networks
8339059815Broadband optical communication network having optical channel protection apparatus
8349059814Modular optical patch panel
8359059563Self-seeding fiber laser, method for driving self-seeding fiber laser, passive optical network system and device
8369057841Wavelength division multiplexing
8379054955Apparatus and methods for enabling recovery from failures in optical networks
8389054833Optical transmission system, receiving-end device, and optical transmission method
8399054832Management, monitoring and performance optimization of optical networks
8409054831Optical communication network path restoration
8419054830Passive optical network system
8429054829Spectrum aware rate selection procedure for optical channels in flexible WDM networks
8439054828Method and system for managing optical distribution network
8449054827Optical switching device using spectral trigger
8459054814Front end device and superposing signal detecting device
8469052448Two-dimensional coupled resonator optical waveguide arrangements and systems, devices, and methods thereof
8479048974Methods for expanding cross-connect capacity in a ROADM optical network
8489048966Optical transmission apparatus
8499042732Providing digital data services in optical fiber-based distributed radio frequency (RF) communication systems, and related components and methods
8509042731Optical module having a plurality of optical sources
8519042729Minimizing bandwidth narrowing penalities in a wavelength selective switch optical network
8529037002Pre-emphasis control method and optical transmission system
8539036995Optical communication system
8549036992LDPC-coded modulation for ultra-high-speed optical transport in the presence of phase noise
8559036482Bufferless nonblocking networks on chip
8569031412Coolerless photonic integrated circuits (PICs) for WDM transmission networks and PICs operable with a floating signal channel grid changing with temperature but with fixed channel spacing in the floating grid
8579025958Planar lightwave circuit optical multiplexer for non-sequential wavelength channels
8589025957Upgradeable passive optical fiber circuit
8599025623Method and apparatus for implementing self-adaption of cross granularity in optical transport network
8609025616Wavelength multiplexer/demultiplexer apparatus
8619020352Optical communication module
8629020351Method and system for multiplexing optical communication signals
8639020350Optical spectrum recovery
8649020348Optical path switching
8659020339Optical transmission system and control method
8669014562Optical line terminal arrangement, apparatus and methods
8679014022Wavelength regeneration in a network
8689008514Method and apparatus for construction of compact optical nodes using wavelength equalizing arrays
86990022041 Tb/s converged optical metro-access transmission based on wavelength division multiplexed orthogonal frequency division multiple access passive optical network (WDM-OFDMA-PON)
8708995833Channel wavelength assignment with transient reduction
8718995832Transponder Aggregator-based optical loopback in a MD-ROADM
8728989591Remote optical demarcation point
8738989582Timing interface module with daughter timing reference modules
8748989581Wavelength reassignment in optical networks
8758983297Multi-stage optical interleaving
8768983292Electrical signal packet routing
8778977130Optical transmission device and optical filter circuit
8788977129Multi-degree reconfigurable optical add-drop multiplexing
8798977080Compact multiplexer/demultiplexer
8808971709Optical transceiver apparatus and wavelength division multiplexing passive optical network system
8818971700Bidirectional monitor module, optical module, optical add-drop multiplexer, and optical system
8828965208Multi-channel optical device
8838965207Method and device for inserting/extracting optical subband into multiband optical OFDM signal
8848965205Methods and apparatus to deploy fiber optic based access networks
8858965155Heterogeneous waveguide integrated optical isolator and circulator
8868958696Coherent augmented optical add-drop multiplexer
8878958695Optical adding and dropping device and optical transmission apparatus
8888948593Optical network interconnect device
8898948588Node equipment
8908942568Optical communication apparatus
8918942565Wavelength assignment in an optical WDM network
8928942564Methods and apparatus for communicating information using visible light signals and/or radio signals
8938942563Wavelength real time display on the equipment for WDM optical networking systems with wavelength tunable capability
8948942562Integrated commercial communications network using radio frequency and free space optical data communication
8958942555Fiber protection and power save with security
8968938169Prioritized optical arbitration systems and methods
8978938163Method and system for hybrid multi-layer mesh restoration in a communication network
8988934774Phase shifter and photonic controlled beam former for phased array antennas
8998934772Method and system for upstream bandwidth allocation in a passive optical network
9008934771Optical network and method for processing data in an optical network
9018929738Resilience in an access subnetwork ring
9028929736Regenerators placement mechanism for wavelength switched optical networks
9038929728Method and system for implementing automatic protection switching for transmission equipment

2014

9048923700Method and system for tunable optical filtering
9058923699Optical switching architectures for nodes in WDM mesh and ring networks
9068923698Spectrum efficient optical transport system with superchannels
9078913899Distribution of optical power in an optical transport system
9088913891Technique for blocking of optical channels
9098913890Passive optical network user terminal and method of power supply control and power supply state reporting for the same
9108909060Optical communication system and optical communication method
9118909054Bi-direction optical sub-assembly and optical transceiver
9128909053Tenant isolation in a multi-tenant cloud system
9138909052Method for dispersion compensation in a mesh optical network, and a network using same
9148909051Opportunistic bandwidth stealing in optical networks
9158909047Scalable optical broadcast interconnect
9168909040Method and apparatus of multiplexing and acquiring data from multiple optical fibers using a single data channel of an optical frequency-domain reflectometry (OFDR) system
9178903242Directionless and colorless reconfigurable optical add/drop multiplexer
9188903241Registration of device characteristics with optical layer for use in establishing connections through an optical network
9198903240Scalable reconfigurable optical add-drop multiplexer
9208903239Optical modulator and optical modulation control method
9218897648Orthogonal frequency division multiple access time division multiple access-passive optical networks OFDMA TDMA PON architecture for 4G and beyond mobile backhaul
9228897646Optical add/drop multiplexer
9238897642Remote node and network architecture and data transmission method for a fiber-optic network, especially for low bit-rate data transmission
9248891965Method for automatic configuration of an optical network element
9258891961Optical communication device, wavelength number measurement device, optical repeater, and wavelength number measurement method
9268886050Wavelength division multiplexing system, method and device for its residual dispersion compensation
9278886045LED light broad band over power line communication system
9288886035Optical line terminal in time division multiple access passive optical network and method for processing optical signal thereof
9298879920Wavelength multiplexed optical system with multimode optical fibers
9308879915Optical switching device, optical add device, and optical drop device
9318873964Optical autodiscovery for automated logical and physical connectivity check between optical modules
9328873963Apparatus and methods for generating and receiving optical signals at substantially 100Gb/s and beyond
9338873962Method for traffic grooming, wavelength assignment and spectrum allocation
9348873961Echelle grating with cyclic free-spectral range
9358873958Sleep control for energy efficiency in ethernet passive optical networks
9368873952Variable rate optical transmitter based on all-optical OFDM super-channel technology
9378873950Method and system of automatic regeneration of optical signals
9388867920Optical de-multiplexing device
9398867917Optical wavelength selective switch calibration system
9408867916Optical transmission method and apparatus using OFDM
9418867912Optical service channel systems and methods over high loss links
9428861967Reconfigurable optical add/drop multiplexer and reconfigurable optical add/drop multiplexing method
9438861966Method and system for band blocking in an optical telecommunication network
9448861965Optical transmission apparatus
9458861963Shared high-intensity broadband light source for a wavelength-division multiple access passive optical network
9468855494Multi-band reconfigurable optical add-drop multiplexer (ROADM) system
9478849131Polarization scattering compensation device and polarization scattering compensation method
9488849128Multi-wavelength light source
9498849120Wavelength division multiplexed passive optical network
9508849118Method for optimizing the capacity of optical communication networks
9518849115Directionless optical architecture and highly available network and photonic resilience methods
9528837948Multimode optical amplifier as a receiver pre-amplifier for free-space optical communications
9538837942Apparatus and method for packet-optical integrated transport
9548831441Optical communication system, optical receiver, optical transponder, wavelength multiplexing optical communication system, wavelength multiplexing receiving device, and wavelength multiplexing optical transponder
9558824893Meshed protected passive optical access network structure and optical network unit structure therefore
9568818200Multiple star wavelength division multiplexing passive optical networks using a wavelength assignment method
9578818195Method of operating an optical transmission system and optical transmission system
9588818194Tunable optical demultiplexer
9598818193Multichannel tunable optical dispersion compensator
9608818190Optical transport system and optical node
9618811823Dynamic optical devices
9628811822System and method for selection of ghost channels for mitigating polarization hole burning
9638811821Optical transmitter, optical transmission method, and transmission/reception system
9648811819Optical multiplexing terminal device, wavelength multiplexing passive optical network system and downlink wavelength transmission method
9658805187Wavelength router with feedback control comprising optical monitor ports
9668798483Apparatus and method for selfadapting dispersion compensation
9678798473Optical signal level adjustment system, information analysis/control signal generation apparatus in the same system, and information analysis/control signal generation method
9688798463Optical channel monitor and optical transmission apparatus
9698792788Tunable multi-wavelength optical transmitter and transceiver for optical communications based on wavelength division multiplexing
9708787771All-optical regenerator and optical network incorporating same
9718787763Repeater
9728787762Optical-layer traffic grooming at an OFDM subcarrier level with photodetection conversion of an input optical OFDM to an electrical signal
9738787761Multi-service provisioning in orthogonal frequency division multiplexing-passive optical network OFDMA-PON
9748786821Polarization controller and polarization mode dispersion compensator
9758781331Controllable optical add/drop multiplexer
9768781330Optical repeater complying with redundant configuration
9778781329Dispersion compensation design method and dispersion compensation design system
9788781328Greedy channel selection procedure for the routing, wavelength assignment and spectrum allocation in the flexible optical WDM networks
9798781327Use of multiple shared wavelength lockers to stabilize transponders in a wavelength division multiplexing (WDM) network
9808774642Optical transmission apparatus and optical interleaving control method
9818774633Element of a wavelength division multiplexing optical network
9828774632Reconfigurable optical add drop multiplexer node automated topology discovery systems and methods
9838774631Switch node
9848774627Network restoration under link or node failure using preconfigured virtual cycles
9858774620Optical transmission system and optical transmission method
9868768170Optical device with reduced thermal tuning energy
9878761611Wavelength assignment for multiple operator support
98887616011:N sparing of router resources at geographically dispersed locations
9898760370System for generating non-homogenous light and associated methods
9908755691Wavelength real time display on the equipment for WDM optical networking systems with wavelength tunable capability
9918755690System and method for administration of dispersion compensation modules
9928754832Lighting system for accenting regions of a layer and associated methods
9938744262Optical subchannel routing, protection switching and security
9948743023System for generating non-homogenous biologically-adjusted light and associated methods
9958737835Optical packet switching device
9968737776Methods and apparatus for constructing large wavelength selective switches using parallelism
9978731403Multicast optical switch
9988731402Orthogonally-combining wavelength selective switch multiplexer and systems and methods using same
9998724999POLMUX-OFDM-DD transmitter and receiver for reduced complexity and overhead in optical access/metro transmission
10008724996Transmission apparatus and transmission method for subscriber network in cable network
10018718476Tunable optical discriminator
10028718475Transponder pool sizing in highly dynamic translucent WDM optical networks
10038718474Chromatic dispersion compensation using sign operations and lookup tables
10048718473Efficient MAC protocol for OFDMA passive optical networks (PONs)
10058718472Passive optical network system
10068718466Method and apparatus providing wave division multiplexing optical communication system with active carrier hopping
10078713101Decentralized processing network
10088712238Optical switching device and communications system
10098706784Time-domain gated filter for RF communication systems
10108705972Energy-efficient and fault-tolerant resonator-based modulation and wavelength division multiplexing systems
10118705971Three-way handshake (3WHS) optical network signaling protocol
10128705966Method, device and system for managing information of an optical node in an optical distribution network
10138705954Optical switching network
10148705953Distance measurement
10158705904Photonic integrated circuits having chirped elements
10168699884Optical transmission system and optical transmission method
10178699877Wavelength division multiplex terminal with automatic configuration and supervision of switch connections
10188699876Bandwidth provisioning for the entangled photon system by adjusting the phase matching conditions
10198693880Wavelength path communication node apparatus, wavelength path communication control method, and recording medium
10208693874Transmission system and method of correcting tilt of the transmission system
10218693873Apparatus and method for improved distributed compensation of filtering effects mitigation in an optical network
10228693872Wavelength adjusting method, apparatus, and system
10238693871System for routing and wavelength assignment in wavelength division multiplexing optical networks
10248693864Optical network system, optical redundant switching apparatus, and WDM apparatus
10258687982OSNR measuring device and optical communication system
10268687976Optical access network having emitter-free customer premise equipment and adaptive communication scheduling
10278687975Integrated circuit with optical interconnect
10288687962Method and arrangement for transmitting signals in a point to multipoint network
10298687956Standby restoration signaling for optical networks
10308682167Optical transmission device
10318682166Subcarrier multiplexing type optical communication method and passive optical network using the same
10328682163Detecting method, apparatus, and system in an optical distribution network
10338676059Optical signal processing apparatus and optical communication system
10348676057Optical transmission device, operational wavelength number restricting method, and program
10358670676Modulator control system and method in an optical network
10368670670Optical ring network architecture
10378670669Directionless reconfigurable optical add and drop mesh node
10388666251Electronic dispersion compensation system and method
10398660436Coded light transmission and reception
10408660435Optical power distribution system
10418660433Pilot-assisted data transmission in a coherent optical-communication system
10428660429Wavelength division multiplexing module
10438660391Heterogeneous waveguide integrated optical isolator and circulator utilizing one or more optical grating couplers
10448655176System and methods for converting a temporally short and spectrally broad optical pulse into a train of spectrally narrow optical pulses
10458655165Light transmission device, optical relay device, optical wavelength multiplexing transmission apparatus, and light transmission method
10468649683Light path characterization, traffic protection, and wavelength defragmentation
10478649680Optical communication system
10488644714Multi-wavelength optical source generator
10498644711Apparatus and method for OLT and ONU for wavelength agnostic wavelength-division multiplexed passive optical networks
10508644710Optical transport having full and flexible bandwidth and channel utilization
10518644709Multiport passive device for sharing optical signals
10528644708Coupled seed light injection for wavelength division multiplexing passive optical networks
10538644705Method, and system for a re-configurable optical multiplexer, demultiplexer and optical add-drop multiplexer
10548644704Method and system for an adaptive channel grid of an optical network
10558639120Method and system for electrical domain optical spectrum shaping
10568639119Remote node for wavelength-division-multiplexed passive optical network
10578639118Wavelength division multiplexed optical communication system having variable channel spacings and different modulation formats
10588639114DPSK modulation-demodulation method, and optical communication device and optical communication system using the same
10598639113Network protection switching
10608634718Polarization control in a photonic integrated circuit
10618630816High spatial resolution fiber optic temperature sensor
10628630543Port wavelength restriction encoding in wavelength switched optical network
10638630542Distributing wavelength compatible with signaling protocols
10648625994Directionless reconfigurable optical add-drop multiplexer systems and methods
10658625993Wavelength-switched optical add-drop multiplexer with wavelength broadcasting capability

2013

10668620161Wavelength multiplexing unit and wavelength multiplexing method of wavelength multiplexing optical transmission system
10678620160Optical transmission apparatus
10688619807High-capacity packet-switched ring network
10698615167WDM optical transmission system and control method thereof
10708611759Optical domain wideband RF spectrum analyzer/channelizer based on third-order nonlinear mixing
10718611750Wavelength locker for simultaneous control of multiple dense wavelength division multiplexing transmitters
10728611749Technology for arranging optical channels in switching optical equipment
10738611748WDM optical transmission system and wavelength dispersion compensation method
10748611747Method and system for multiplexing optical communication signals
10758611746Optical transmission between a central terminal and a plurality of client terminals via an optical network
10768611743Optical-layer traffic grooming in flexible optical networks
10778606115Optical transmission apparatus and optical communication system
10788606108Dispersion slope compensation and dispersion map management systems and methods
10798606107Colorless dense wavelength division multiplexing transmitters
10808600240Optical network element, optical network, and method of operating an optical network
10818594504Optimised multiplexer/demultiplexer optical structure
10828594503Method and system for multiplexer waveguide coupling
10838588613Sync distribution over a non-traffic bearing channel
10848588609Wavelength division multiplexing transmission system and apparatus and optical signal noise ratio calculation method
10858582984Waveform controller, responsive element module, optical switch apparatus, responsive element and optical switch apparatus control method
10868582971Method and apparatus to deploy fiber optic based access networks
10878571419Method and system for flexible optical signal aggregation and transmission
10888571058Terminal apparatus, data transmission system and data transmission method
10898565615Optical modulation apparatus and optical modulation method
10908565608Optical network with switchable drop filters
10918565603Reconfigurable optical add drop multiplexer core device, procedure and system using such device, optical light distributor, and coupling-ratio assigning procedure
10928565602Wavelength and power monitor for WDM systems
10938565600Optical network configurations with multiple band multiplexing and de-multiplexing and AWG structures with multiple band processing
10948559822Optical fiber hub including optical booster amplifier
10958559821Wavelength stabilization and locking for colorless dense wavelength division multiplexing transmitters
10968559817Communication system comprising a tunable laser
10978554088Optical transmission apparatus, optical transmission system, and optical transmission method
10988554028Upstream fiber optic couplers and methods for power splitting passive optical networks
10998548334Dynamic intelligent bidirectional optical access communication system with object/intelligent appliance-to-object/intelligent appliance interaction
11008548332Indirect optical free-space communications system and method for the broadband transmission of high-speed data
11018543010Bias control in an optical modulator and transmitter
11028543001Cascaded injection locking of fabry-perot laser for wave division multiplexing passive optical networks
11038543000System and method for reducing polarization dependent loss cross-talk effects
11048542999Minimizing bandwidth narrowing penalties in a wavelength selective switch optical network
11058538267ROADM transponder aggregator systems and methods of operation
11068538266Optical fiber hub
11078538265Optical communication device and dispersion compensation method
11088538264Dispersion compensating apparatus, dispersion compensating method, optical receiving apparatus, and optical receiving method
11098538262Color free WDM PON based on broadband optical transmitters
11108532489Multi-fiber ten gigabit passive optical network optical line terminal for optical distribution network coexistence with gigabit passive optical network
11118532446Scalable silicon photonic multiplexers and demultiplexers
11128531769Dispersion element, spectral device, and wavelength selective switch
11138526819Receiver, light spectrum shaping method, and optical communication system
11148521027System and method for demultiplexing optical multi-wavelength signals
11158521026Registration of device characteristics with optical layer for use in establishing connections through an optical network
11168520986Use of fiber optic sensor techniques for monitoring and diagnostics of large AC generators
11178519803Resonator systems and methods for tuning resonator systems
11188515287Optical transmission equipment and method for controlling thereof
11198515283Transparent fiber channel link management for protocol transport
11208515278Passive optical networks with mode coupling receivers
11218515226Spherical optical splitter/combiner
11228509621Method and system for optical connection validation
11238509620System and method for dense wavelength division multiplexing optical service channel usage
11248503889Filter-based DPSK receiver
11258503882Optical receiver and control apparatus
11268503881Systems for extending WDM transmission into the O-band
11278498538Compact monolithic dispersion compensator
11288494369Planar lightwave circuit
11298494368Electronic nonlinearity compensation for optical transmission systems
11308494318Method and device for hitless tunable optical filtering
11318494317Method and device for hitless tunable optical filtering
11328488977Time division multiple access over wavelength division multiplexed passive optical network
11338488967System and method for OCDMA-based photonic layer security robustness to archival attack
11348488244Ultra compact optical multiplexer or demultiplexer
11358483565Pluggable conversion module for a data transport card of a wavelength division multiplexing system
11368483564Hybrid optical add-drop multiplexing network and wavelength allocation for the same
11378478125Optical PON network using passive DPSK demodulation
11388472808Optical data path systems
11398472805Tunable multi-wavelength optical transmitter and transceiver for optical communications based on wavelength division multiplexing
11408472802Two-phase optical communication methods and optical bus systems for implementing the same
11418467676Sparing for multi-wavelength optical transmitter
11428463127Optical switching architectures for nodes in WDM mesh and ring networks
11438463126Optically variable filter array apparatus
11448463125Optically variable filter array apparatus
11458463088Multi-channel optical device
11468457497Optimized directionless optical add/drop module systems and methods
11478457496Optical signal switching device
11488457489Method for controlling the center wavelength of at least one narrow band optical channel WDM transmitting device in a WDM network and corresponding WDM transmitting device
11498452190Wavelength locked channel select
11508452180Optical multiplexer
11518452179Remotely settable chromatic dispersion robustness for dense wave division multiplexing interfaces
11528447190Distortion compensating apparatus, optical receiving apparatus, and optical transmitting and receiving system
11538447184Method for the raman amplification of optical signals and transmission system
11548447183Methods and apparatus for performing directionless and contentionless wavelength addition and subtraction
11558447182Multi-wavelength transponder with wavelength division multiplexing modules
11568447151Triplexer for an optical fiber, package including the same, and associated methods
11578447147Communication methods, methods of forming an interconnect, signal interconnects, integrated circuit structures, circuits, and data apparatuses
11588442399Port wavelength restriction encoding in wavelength switched optical network
11598437638Optical modulation circuit and optical transmission system
11608433196Optical band splitter/combiner device comprising a three-arms interferometer
11618428463Apparatus and method for controlling a dynamic gain equalizer
11628428462Self-healing repeater node
11638428461Apparatus for managing an optical signal
11648428460Wavelength division multiplexing passive optical network having multiple branches of optical distribution
11658422890Fiber output stabilizer
11668417117DWDM and CWDM hybrid PON system and method
11678412050Coaxial free space optical telescope and systems using the same
11688412046In-service optical dispersion determining system and method
11698412045Propagation apparatus and dispersion value setting method
11708406630Optical WDM transmitting and receiving device and optical transceiver unit for this device
117184066221:N sparing of router resources at geographically dispersed locations
11728401405Monolithic widely-tunable coherent receiver
11738401399Chip-based advanced modulation format transmitter
11748401392Flexible branching unit and system including the same
11758401391Channel power management in a branched optical communication system
11768401390Optical connecting apparatus
11778401389Method and system for compensating for optical dispersion in an optical signal
11788401388Optical transmitter
11798401385Optically switched communication network
11808401383Data transmission method and network for transmitting a digital optical signal over optical transmission links and networks
11818396374Digital signal processing optical transmission apparatus
11828385749High speed optical transmitter with directly modulated laser source
11838385743Channel allocation method for multi-channel optical transmission and optical transmission system utilizing the method
11848385742Electrical return-to-zero (ERZ) driver circuit
11858385741Optical pulse generating device and optical signal processing device
11868380087High performance gigabit passive optical network
11878380076Optical transmission system with optical chromatic dispersion compensator
11888380070Upgrading method, system and apparatus of low-density wavelength division multiplexing system
11898380069Introduction-side dispersion shifting of channels
11908380068Distinct dispersion compensation for coherent channels
11918380067Tunable chromatic dispersion compensation device and method
11928380066Network management system
11938380064Depolarised WDM source
11948380063Switched optical fibre network for airplane seats
11958374504Optical communication system
11968369716Integrated wavelength selectable photodiode using tunable thin film filters
11978369707Dynamic routing of optical signals in optical networks
11988369666Optical wavelength multiplexing/ de-multiplexing circuit
11998358932All-optical data center network
12008355612Active alignment method for multi-channel optical transmitter and receiver, which has an optical signal generator with an optical multiplexer, which has an optical signal generator with an optical multiplexer
12018352537Object modeling scheme for next generation network wavelength division multiplexing
12028351791Optical devices with built-in isolators
12038351790Optical OADM transmission system with loopback
12048346091Distributed antenna system for wireless network systems
12058346089Methods for expanding cross-connect capacity in a ROADM optical network
12068346088Controllable optical add/drop multiplexer
12078346086Optical signal processing device
12088346085Dual-filter optical network interface unit and method of removing noise using same
12098346084Optical device with stable optical configuration

2012

12108340530Local oscillator frequency offset compensation in a coherent optical signal receiver
12118340525Method and device for stabilizing multi-channel optical signal wavelengths
12128340524Protected light source for multiple wavelength division multiplexed passive optical networks (WDM-PONs)
12138340523Tunable optical filter
12148340522Filter assembly and optical module using same
12158340515Method and system for monitoring optical dispersion in an optical signal
12168335434All optical fast distributed arbitration in a computer system device
12178335433Wavelength division multiplexing serial video signals over optical interfaces using the XFP form factor
12188331800Intra-channel nonlinearity compensation for optical data communications
12198331787Optical transmitting apparatus and optical multiplexing unit
12208331786Transmission method of WDM light and WDM optical transmission system
12218331785Encoding-decoding method, optical pulse time spreading apparatus, optical add-drop-multiplexer, and optical communication system
12228331783Optical communication system, optical communication apparatus, and optical communication method thereof
12238326160Dispersion compensation device, optical reception device, method for dispersion compensation, and method for optical reception
12248326156Cell phone/internet communication system for RF isolated areas
12258326155Wavelength division multiplex (WDM) optical demultiplexer
12268326154Multiwavelength transmitter
12278326153Tunable dispersion compensator configured for continuous setpoint control
12288326152System and method for scheduling timeslots for transmission by optical nodes in an optical network
12298326143Routing method of optical communication network node apparatus and optical communication network node apparatus
12308320759Methods and apparatus for reconfigurable add drop multiplexers
12318315525Amplification of interleaved optical signals
12328315524Electro-optic conversion module, optic-electro conversion module and conversion methods thereof
12338315522Wavelength routing system
12348306427WDM transmission apparatus, optical add-drop multiplexer and WDM transmission method
12358306426Optical code division multiplexing communication system and method for correcting failure of the same
12368306425High-degree reconfigurable optical add-drop multiplexing systems using bi-directional wavelength selective switches
12378306424Remodulating channel selectors for WDM optical communication systems
12388306418Data pattern dependent distortion compensation in a coherent optical signal receiver
12398306369Optical hybrid circuit, optical receiver, and optical receiving method
12408305881Method and system for maximizing wavelength reuse in optically protected WDM networks
12418301027Agile-beam laser array transmitter
12428295704Laser transmitting at automatically varying wavelengths, network interface unit and system including the laser, and method of automatically varying the wavelength of a laser
12438295703Optical transmission apparatus
12448295698Time-coherent global network
12458290371OCDM-based all optical multi-level security
12468290316Self-referenced optical fiber sensor and related sensor network
12478285145Modular colorless and directionless multi-degree reconfigurable optical add/drop multiplexer node with in-service upgradeability
12488285144Optical device for rearranging wavelength channels
12498280258Optical communication systems and methods utilizing a split amplification band and nonlinear compensation
12508280256Optical hybrid circuit, optical receiver and light receiving method
12518280255Transmitter photonic integrated circuit
12528280254Optical interleavers and de-interleavers
12538280250Bandwidth provisioning for an entangled photon system
12548275264Optical waveform controlling apparatus
12558275262Methods and apparatus to deploy fiber optic based access networks
12568270836Signal transmitting device, transmitter and receiver
12578270835Method and system for reducing cross-phase modulation in an optical signal
12588270831Use of pre-validated paths in a WDM network
12598270790Planar optical waveguide element, chromatic dispersion compensator, methods for designing chromatic dispersion compensator, optical filter, methods for designing optical filter, optical resonator and methods for designing optical resonator
12608270789Optical waveguide element, chromatic dispersion compensator, methods for designing chromatic dispersion compensator, optical filter, methods for designing optical filter, optical resonator and methods for designing optical resonator
12618270783Silicon integrated photonic optical parametric amplifier oscillator and wavelength converter
12628265485Optical transmission system and method for chromatic dispersion compensation
12638260141Method to transform a dynamic analog optical network to a digital representation
12648260140WDM passive optical network with parallel signal detection for video and data delivery
12658260139Dispersion compensator
12668260138Wavelength distribution for optical transport
12678260135Passive optical network system and wavelength assignment method
12688254793Tuning select fiber optic channels for channel monitoring
12698254784Light source distributor for use in wavelength division multiplexed-passive optical network
12708254783Point-to-multipoint optical communication system
12718249464Optical receiver and method for optical reception
12728249456Optical ring network architecture
12738249453Optical communication system
12748244134Optical interconnect
12758244133Optical waveband demultiplexer, optical waveband multiplexer, and optical waveband selective switch
12768244132Pre-compensation method for delays caused by optical fiber chromatic dispersion, multi-sub-carrier signal generator applying the method, and transmitter of optical-OFDM system applying the signal generator
12778244131Optical wavelength multiplexing device, optical wavelength dividing device, optical wavelength dividing multiplexing device, and method of controlling optical band-pass filter
12788238751Method and apparatus for enabling multiple optical line termination devices to share a feeder fiber
12798238749Distributing wavelength compatible with signaling protocols
12808238031Eye piece and tunable chromatic dispersion compensator using the same
12818218970Medium access control method for optical-fiber TDMA networks
12828213799Optical receiver including a filter on a planar lightwave circuit
12838213798Optical transmission apparatus, wavelength division multiplexing optical communication system and optical transmission method
12848213797DWDM transport of CATV and digital signals over optical fiber in low-dispersion spectral regions
12858213794Programmable optical network architecture
12868208812Optical relay device and optical relay transmission system
12878208771Optical switch
12888204385Optical device with reduced thermal tuning energy
12898204379Noise reduction in optical communications networks
12908204374Reconfigurable multichannel (WDM) optical ring network with optical shared protection
12918200091Wavelength division multiplexing device and method of detecting input break of optical signal
12928195048Optical transport system architecture for remote terminal connectivity
12938190028Method and apparatus for treating a received signal to present a resulting signal with improved signal accuracy
12948190027Multifunctional and reconfigurable optical node and optical network
12958184979Optical OFDMA network with dynamic sub-carrier allocation
12968184978Method and device for channel-adapted signal transmission in optical networks
12978184971Optimization mechanism for use with an optical control plane in a DWDM network
12988180221Wavelength-division multiplexed passive optical network for reducing degradation in noise characteristic of wavelength-locked fabry-perot laser diodes
12998175430Optical multiplexer/demultiplexer systems configured with non-periodic gratings
13008170418Protected light source for multiple wavelength division multiplexed passive optical networks (WDM-PONS)
13018170417Mechanism to detect an unstable wavelength channel and limit its impact on a ROADM network
13028165474Reducing cross modulation in multichannel modulated optical systems with anti-clipping
13038165469Cascade and ring measurement sensor with fixed and variant wavelength encoding
13048165468Methods and apparatus for performing directionless wavelength addition and subtraction within a ROADM based optical node
13058165467Optical transmission system and optical node
13068160446Methods and systems to stabilize an optical network against nodal gain changes
13078155524Method and apparatus for transmitting multiple channels in a wavelength division multiplexed (WDM) optical communication system with reduced raman crosstalk and nonlinear distortions
13088155149Packet assembly in a communication network supporting virtual networks
13098150264Methods for non-wavelength-converting multi-lane optical switching
13108149503Reflective semiconductor optical amplifier and optical signal processing method using the same
13118139939Upgradeable passive optical network
13128139905Generator protection system
13138135280Method and system for power stability control in wavelength division multiplexing networks
13148131151Testing and measurement in optical networks
13158131150Tunable bidirectional multiplexer/demultiplexer for optical transmission system
13168126332Method of wavelength alignment for a wavelength division multiplexed passive optical network
13178126331Wavelength division multiplexing transmission device and wavelength division multiplexing transmission method
13188126330Dynamic wavelength service over a ROADM optical network
13198126329Quad-port optical module with pass-through and add/drop configuration
13208121486Optical transmission apparatus
13218121485RF-photonic transversal filter method and apparatus
13228121484Bi-direction optical module installing light-emitting device and light-receiving device in signal package
13238121483Packaging a reconfigurable optical add-drop module
13248121482Spatial light modulator-based reconfigurable optical add-drop multiplexer and method of adding an optical channel using the same
13258121481Chromatic dispersion compensation designing method in optical network and a system thereof
13268121475Optical signal quality monitor for a high-bit rate signal
13278121474Standby broadband light source for passive optical networks
13288116631Hardened, wavelength enabled optical capacity
13298116630Methods for dynamic wavelength add/drop in a ROADM optical network
13308116629Reconfigurable optical add drop multiplexer core device, procedure and system using such device, optical light distributor, and coupling-ratio assigning procedure
13318116628Wavelength-division multiplexed passive optical network for embodying wavelength-independent operation of wavelength-locked Fabry-Perot laser diodes by injecting a low noise broadband light source
13328112001Non-linearity compensation in an optical transmission
13338111995Shared, colorless add/drop configuration for a ROADM network using M.times.N wavelength switches
13348111993Methods and apparatus for optical transmission of digital signals
13358111992Amplified wavelength broadband video distribution architectures
13368107818Tunable filter
13378107817Method for receiving optical orthogonal frequency-division multiplexing signal and receiver thereof
13388107816Wavelength division multiplexing module
13398107167Spatial-dispersion-free spectral combining of pulsed high peak power fiber laser beams
13408103140Interferometric fiber optic gyroscope with silicon optical bench front-end
13418103138Tunable filter
13428098967Generator protection system
13438098654Storage system, computer system and interface module
13448095011Wavelength division multiplexing filter, wavelength division multiplexing system, and wavelength division multiplexing method
13458095010Method and device for tunable optical filtering
13468095009Method, system and apparatus for distributing node information
13478095008Systems and methods for a multiple-input, multiple-output controller in a reconfigurable optical network
13488095007Optical add/drop multiplexer using integrated optical components
13498089683Optical processing

2011

13508086106WDM optical transmission system and controlling method thereof
13518086105Wavelength division multiplexer/demultiplexer having flat wavelength response
13528086101Multi-city DWDM wavelength link architectures and methods for upgrading
13538078061Wavelength division multiplexed-passive optical network capable of high-speed transmission of an optical signal by using modulation format having high spectral efficiency
13548078057Centralized congestion avoidance in a passive optical network
13558078054Apparatus and method for improving the tolerance of tone-based optical channel monitoring to stimulated Raman scattering
13568078053Optical link characterization
13578077251Photometry apparatus and camera
13588073334Optical modulation method and system in wavelength locked FP-LD by injecting broadband light source using mutually injected FP-LD
13598073333Multiplex delay unit
13608073332Photonic cross-connect
13618073327System and method for improving the efficiency of routers on the internet and/or cellular networks and/or other networks and alleviating bottlenecks and overloads on the network
13628072983Method and apparatus for dispatching signals in an optical transport network
13638068744Optical transmitter
13648068736Tunable dispersion compensator
13658068734Mapping a client signal into transport frames
13668064772Optical space transmitter and optical space transmission method for wavelength-multiplexed light
13678064770System and method for spectral loading an optical transmission system
13688064768Intra-channel equalizing optical interleaver
13698064766Orthogonal frequency division multiple access based optical ring network
13708064433Control architecture and implementation for switches with carrier sensing
13718059924Multiplexed photonic membranes and related detection methods for chemical and/or biological sensing applications
13728059684Method and apparatus for signal splitting and combining
13738055140Reducing cross-phase modulation using group delay
13748055135Dispersion compensator, and dispersion compensating method
13758055132Optical remote node device and support equipment for constructing and extending fiber-optic access networks
13768055129Alien wavelength channel balancing and line amplifier optimization
13778050566System and methods for quantum key distribution over WDM links
13788050564Coherent optical channel substitution
13798050563Self checking optical add drop multiplexer
13808045858Methods and systems for providing full avionics data services over a single fiber
13818041219Optical network element with Brillouin effect colorless wavelength shift
13828041218Setting up a circuit in a network
13838036534Optical transmitter outputting a plurality of signal light with a preset wavelength span
13848036533Optical transmitter/receiver module
13858036529Wavelength conversion apparatus in time division multiplexing--passive optical network system based on wavelength division multiplexing system, and optical transmission apparatus and method using the same
13868032028Optical add/drop device
13878032027Wide free-spectral-range, widely tunable and hitless-switchable optical channel add-drop filters
13888032026Optical transmission apparatus, optical interface device, and optical transmission method
13898032023Reconfigurable DWDM wavelength switch based on complementary bandpass filters
13908027588Systems and methods for optical carrier recovery
13918027587Integrated optic vector-matrix multiplier
13928023825Optical switching architectures for nodes in WDM mesh and ring networks
13938023782Method and apparatus for demultiplexing optical signals in a passive optical network
13948019228Optical switching transmission system with timing correction
13958014676CMOS-compatible tunable microwave photonic band-stop filter
13968009987Optical add/drop multiplexer
13978009986Optical node for mesh-type WDM optical network
13988005363Passive optical network with wavelength division multiplexing
13998005360PMDC feedback signal for alternate polarization DPSK system
14008005356Video transmission system of a ring network
14018000610Monitoring mechanisms for optical systems
14028000604Orthogonal frequency division multiple access (OFDMA) based passive optical network (PON) architecture and its extension to long distance
14038000603WDM systems and methods
14047995923Controllable optical multiplexer
14057995922Wave division multiplexing replacement of serialization
14067995921Banded semiconductor optical amplifiers and waveblockers
14077991293Unified optical connector architecture
14087991291WDM PON based on DML
14097991290Optical prism and optical transceiver module for optical communications
14107991287Optical communication system with suppressed SBS
14117986881Optical transmission systems, devices, and methods
14127983564Transmission system and transmission method
14137983563Internet protocol routing with optical code division multiple access
14147983560Modular WSS-based communications system with colorless add/drop interfaces
14157978978Topologically multiplexed optical data communication
14167978973Transmission system
14177977622Tuning an optical resonator using a feedback signal representing an average DC balanced coding
14187974534Wideband microwave and millimeter wave filters using photonic spectral filtering
14197974533Long reach optical network
14207974531System and method for generating a visual representation of a wavelength division multiplexing optical network and nodes thereof
14217970280Thermally-floating transmitter wavelength grid of signal channels in a WDM transmission system
14227970248Photonic bandgap fibers
14237965940Transparent fiber channel link management for protocol transport
14247962039Multiple wavelength light source, and generation method for multiple wavelength light
14257962038High performance gigabit passive optical network
14267957645Fiber optic interconnection
14277957644Flexible open ring optical network and method
14287957619All-fiber module for femtosecond pulse compression and supercontinuum generation
14297957270Resilient packet ring protection over a wavelength division multiplexing network
14307953321Optical transmission equipment and optical add-drop multiplexer
14317953309Optical fiber and production method thereof
14327949257System and method for tunable chromatic dispersion compensation
14337945164Multiple fiber optic gigabit ethernet links channelized over single optical link
14347941049Optical transmission apparatus with optical amplifiers
14357936994Broadband light source using fabry perot laser diodes
14367936993Chromatic dispersion compensating apparatus
14377936749Node device for transfering supervisory control information in photonic network
14387933522Optical signal transmission system and optical signal transmission method
14397933521Integrated multiplexer/demultiplexer having offset transmitters and receivers for use in an optical transceiver module
14407933520High-speed wavelength selectable optical source and method thereof
14417925165Packet and optical routing equipment and method
14427920793Inline repeater and optical fiber communication system
14437917033Wavelength-multiplexing optical transmission system and wavelength-multiplexing optical transmission method
14447917030Fiber optic communication system with automatic line shutdown/power reduction
14457912374High isolation wavelength division devices
14467907844Method and apparatus for hitless routing of optical signals in an optical transport network
14477903980Amplified wavelength broadband video distribution architectures using a phase modulating waveguide
14487903975Optical add-drop multiplexer
14497903974Optical transmission system for transmitting signal of E-band with other bands
14507899331WDM optical transmission system and optical amplifying apparatus
14517899330Compact high-resolution tunable optical filter using optical diffraction element and a mirror
14527894697Optical fiber, optical transmission line, optical module, and optical transmission system
14537891885Optical module
14547889995In-service optical dispersion determining system and method
14557889991Planar lightwave circuit based tunable 3 port filter
14567885545Dispersion compensation method and compensation node
14577873277Passive optical network system and wavelength assignment method
14587869712Method and apparatus for increasing transmission capacity in optical transport network
14597869711Optical tunable asymmetric interleaver and upgrade for dense wavelength division multiplexed networks
14607869672Optical assemblies and methods for fabrication of optical assemblies
14617865083Optical calibration
14627865082Optical receiver and controlling method thereof, and optical transmission system
14637865081Fiber access architecture capable of being seamlessly upgraded
14647865080Methods for the optical transmission of polarization multiplex signals
14657865079MWS drift feedback compensator using VOA and input power dithering
14667864389Method of controlling optical amplifier located along an optical link

2010

14677860397Wavelength superimposing device, manufacturing method therefor, and WDM network system
14687860396Noise reduction in optical communications networks
14697853147Information processing system, calculation node, and control method of information processing system
14707848643Communication recovering system for wavelength division multiplexed passive optical network
14717844182Optical network architecture for simultaneous transport of analog video signals and ethernet data
14727844181Simple fibre channel speed negotiation across transport
14737840103Performance compensated Tx/Rx optical devices
14747835646High-order Bragg fiber dispersion correction
14757835645Optical circuit structure for realizing a higher-order node in an optical transmission network
14767835081Diffractive optical element and bidirectional optical communication module using the same
14777831149Optical transmission device
14787831148Optical network and amplifier node therefore
14797831118Coarse wavelength division multiplexing optical transmission system, and coarse wavelength division multiplexing optical transmission method
14807826749Method and system for quantum key distribution over multi-user WDM network with wavelength routing
14817826748Systems and methods for adaptive gain control to compensate OSNR penalty caused by side-lobe of MEMS-based reconfigurable optical add-drop multiplexers
14827826747Optical burst transport using an electro-optic switch
14837826745Open fiber control and loss of light propagation in time division multiplexed inter-system channel link
14847826744Optical network system and transmission apparatus
14857826693Monolithically integrated reconfigurable optical add-drop multiplexer
14867822345Output stage for carrying out WDM message transmission and methods for exchanging full light sources in an output stage of this type
14877817920Short-distance communication method and apparatus using visible light
14887813642Optical transmission apparatus and method of controlling the same
14897809273Transmission technique in system including chamber
14907809272Systems and methods for providing a three-port reconfigurable optical add-drop multiplexer with an improved edge profile and add/drop flexibility
14917809270Remodulating channel selectors for WDM optical communication systems
14927809268Integrated optical service channel and quantum key distribution channel
14937809263Optical transmission apparatus and control method therefor
14947808705Wavelength-selective switch
14957805077Scalable and movable DWDM usage of CWDM networks
14967801446Wavelength division multiplexed optical communication system with rapidly-tunable optical filters
14977801445Method and apparatus for DWDM line card
14987801444Amplification for optical fibre ultrawide band transmission systems
14997801402Receiver photonic integrated circuit (RxPIC) chip utilizing compact wavelength selective decombiners
15007796897WDM optical transmission system and WDM optical transmission method
15017796886Distributed terminal optical transmission system
15027796849Spatial separation of optical frequency components using photonic crystals
15037792398Optically controlled optical-path-switching-type data distribution apparatus and distribution method
15047792394Photonic bandgap fibers
15057791793Semiconductor optical amplifier gate switch drive circuit, semiconductor optical amplifier gate switching device, and optical cross connect
15067787772Optical signal transmission device and optical communication network
15077787720Wavelength selective reconfigurable optical cross-connect
15087783197Method and apparatus for reducing crosstalk in a DWDM transmission system
15097778550System and method for wavelength monitoring and control
15107778549Unidirectional drop and continue using bidirectional transponder
15117778547Code grouping for optical networks
15127773886Optical regenerator in optical fiber communication system
15137773885Thermal drift compensation system and method for optical networks
15147773884Method and apparatus for automatic shut-down and start-up of optical amplifiers in optical networks
15157773883Single-fiber optical ring networks based on optical double sideband modulation
15167769296Arrangement for reducing multiplexing and demultiplexing cost in ultra long haul (ULH) all-optical networks by minimizing number of required mux/demux groups
15177769295Dual beam splitter optical micro-components and systems and methods employing same
15187769294Optical transmission network
15197769262Optical compressor and ultra-short pulse light source
15207764884Optical ring network architecture
15217756419Traffic signal node cross scheduling method and system
15227751714Centralized resource management in wavelength selective switch based wavelength cross connect systems
15237751713Communication network with skew path monitoring and adjustment
15247751706Chromatic dispersion compensating apparatus
15257742701Coherent optical channel substitution
15267742700Topologically multiplexed optical data communication
15277738791Transmitter and method for transmitting messages on an optical fiber
15287738788Address recognition apparatus
15297734180Single fibre bidirectional optical transmission system and single fibre bidirectional optical amplifier
15307734174System and method for a channel guard in a reconfigurable optical add-drop multiplexer
15317729615Method for transmitting overhead information for wavelength division multiplex networks for fibre-optic information transmission
15327729585Light source apparatus with modulation function and its driving method
15337725034Optical transmision apparatus and control method therefor
15347725033Optical wavelength controlling method and a system thereof
15357725032Optical transmission apparatus
15367720385Device and method for provision of customized system for optical transmission of data
15377720384Wavelength division multiplexing apparatus
15387720383Optical transmission apparatus having OADM function
15397720380Optical transmission apparatus in ring transmission system
15407720333Optical module and data communication system including the optical module
15417715725Lock detector and optical phase-locked loop system
15427715721Wavelength assignment in an optical WDM network
15437715720Coherent optical detector and coherent communication system and method
15447715711Wavelength selective switch design configurations for mesh light-trails
15457711270Optical node and optical add/drop multiplexer
15467711224Colorless multichannel tunable dispersion compensator
15477706690Relay node in optical networks
15487706689Forward baseband digitalization
15497706688Wavelength reconfigurable optical network
15507706643Low loss, noise filtering multiplexer/demultiplexer for reconfigurable OADMs
15517702243Flexible node architecture with full protection
15527702241Optical signal regenerator and transmission system
15537697845Optical transmission equipment and optical add-drop multiplexer
15547697843Modular add/drop multiplexer including a wavelength selective switch
15557693423Maximising power in optical communication networks
15567693371Optical waveguide having chirp grating for high conversion efficiency
15577693364Apparatus, system and method for a tunable optical filter
15587693357Methods and systems for eliminating deleterious polarization effects in an optical fiber dispersion compensation module
15597689126Wavelength dispersion compensation control method and wavelength dispersion compensation control device
15607689125Methods and systems for polarization control and polarization mode dispersion compensation for wideband optical signals
15617689075Optical wavelength division multiplexer/demultiplexer device
15627684707Methods and apparatus for generating local oscillation signals
15637676159All-optical header processing and packet switching
15647676157Method and apparatus for providing gain equalization to an optical signal in an optical communication system
15657672599Intra-channel nonlinearity compensation for optical data communications
15667672592Optical transmitter system
15677664405Pluggable optical diplexer/triplexer module
15687664399Optical communication device
15697660530Optical transmission apparatus, optical transmission system, and optical transmission control method
15707660529System and method for providing failure protection in optical networks
15717660528Method and system for mitigating Raman crosstalk in an Ethernet passive optical network
15727660525Methods and apparatus for optimizing utilization in a ring network
15737657181Optical add/drop multiplexer and optical network system
15747657180Communication path calculation method and module
15757657179Wavelength division multiplexing source using multifunctional filters
15767653311Optical wavelength add-drop multiplexer
15777653307Optical switching device for a transparent node of high switching degree adapted to spectral equalization
15787650076Dynamic blocking of token-controlled data transmissions in communication networks
15797650075Optical add-drop multiplexer, and optical network equipment using the same
15807650074Optical transmission apparatus
15817650073System and method for discovering wavelengths in network elements having an optical architecture
15827650072Method of upgrading optical node, and an optical node apparatus
15837646983Apparatus and method for commissioning an optical transmission system
15847646982Chromatic dispersion compensator
15857646981WDM systems and methods
15867646979Multiple access protocol system and related techniques for multi-gigabit optical wavelength division multiplexed local area networks
15877643758CWDM system architecture with amplification
15887643756Optical network for transferring data between devices in a vehicle
15897643754Method of and apparatus for providing multi-wavelength light source

2009

15907639948System and method for wave vector multiplexed laser communication
15917639947System and methods for quantum key distribution over WDM links
15927639910Optical module and method of packaging the same
15937636522Coolerless photonic integrated circuits (PICs) for WDM transmission networks and PICs operable with a floating signal channel grid changing with temperature but with fixed channel spacing in the floating grid
15947634196Optical add/drop multiplexer with reconfigurable add wavelength selective switch
15957634195Digital optical network architecture
15967633680Diffraction grating device and optical apparatus
15977630644Optical add/drop multiplexer, control method therefor and control program therefor
15987630643Multimode optical transmission system and multimode optical transmission method
15997630135Two-dimensional blazed MEMS granting
16007627253RF-photonic transversal filter method and apparatus
16017627248Method for pre-emphasis of optical signals in a transmission system comprising add-drop-modules
16027627245System and method for re-using wavelengths in an optical network
16037627244Optical transmission apparatus, continuity testing method therein, and optical transmission system
16047623789Low loss WDM add drop node
16057623788Optical wavelength division multiplexing transmitter
16067623787Wavelength division multiplexing transmission apparatus using a multiple wavelength light source
16077620328Multi-wavelength optical CDMA with differential encoding and bipolar differential detection
16087616894System and method for mitigating dispersion slope in an optical communication system
16097616893Wavelength division multiplexing optical repeating transmission method and repeating apparatus
16107616891System and method for transmission and reception of traffic in optical light-trails
16117613398Wavelength-tunable light source and wavelength-division multiplexed transmission system using the source
16127613397Wavelength division multiplexing optical transmission system and wavelength dispersion compensation unit
16137613396Multiplexing communication system and crosstalk elimination method
16147609970Add/drop node for an optical communications network
16157609969Method and system for compensating for optical dispersion in an optical signal
16167609968Secure analog communication system using time and wavelength scrambling
16177609964Power level management in optical networks
16187606494Optical transmission systems, devices, and methods
16197606493Optical waveguide and optical multiplexer-demultiplexer
16207603037Ultra-dense wavelength and subcarrier multiplexed optical and RF/mm-wave transmission system
16217603035Method and system for a data centric architecture in an optical network
16227596320Preemphasis of an optical wavelength multiplex signal
16237596315Wavelength division multiplexing optical transmission system and transmission wavelength control method therefor
16247590359Optical communication node system, all-optical packet routing system, and all-optical packet routing method and all-optical packet routing network using the node and routing systems
16257590355Method and apparatus for PMD mitigation in optical communication systems
16267590350System and method for automated engineering of optical networks
16277587139Optical channel power control in WDM networks
16287587138Broadband 2.times.2 optical splitter
16297587137System and method for seamless integration of CWDM and DWDM technologies on a fiber optics infrastructure
16307587112Optical device and light control method
16317587103Method for ultrafast optical deflection enabling optical recording via serrated or graded light illumination
16327583900Modular optical transceiver
16337580631Optical transmission device for controlling optical level of transmission signal in optical transmission system
16347577361Optical network system and optical coupling apparatus
16357574138Dynamic control of the level of degradation of optical signals in a transparent optical communication network
16367574137Multi-wavelength time-coincident optical communications system and methods thereof
16377574136Wavelength real time display on the equipment for WDM optical networking systems with wavelength tunable capability
16387574133Virtual protection channel for fiber optic ring network
16397565083Wavelength shifting in an optical network route to mitigate distortion in different types of fiber
16407565079System and method for optical network demarcation
16417558481Method for optimizing enhanced DWDM networks
16427558480Unrepeatered optical communication system with suppressed SBS
16437558477Communication recovering system for wavelength division multiplexed passive optical network
16447556439Bidirectional optical assembly and method for manufacturing the same
16457555222Multiformat transmitter
16467551855D(WDM) communications network employing periodic spectral multiplex processing
16477551853Data communications apparatus
16487551809Optical fiber delivery system for delivering ultrashort optical pulses and optical system including the same
16497546037Topologically multiplexed optical data communication
16507542679Optical transmission systems, devices, and method
16517542678Method and apparatus for a supervisory channel in a WDM fiber-optic communication system
16527542677Dispersion compensation method in optical communication system having optical add drop multiplexing capability
16537542634Low loss, noise filtering multiplexer/demultiplexer for reconfigurable OADMs
16547539418Integrated ring modulator array WDM transceiver
16557539417Optical transmission system
16567536110Optical transmission system for substantially equalizing the output signal level among frequency bands and substantially lowering the signal-to-noise ratio
16577532826Optical demultiplexer and receiver assembly
16587532817Fiber optic link protection apparatus
16597529484Triplexer transceiver using parallel signal detection
16607529480Method and system for light path monitoring in an optical communication network
16617529441Wavelength routing optical switch
16627526205Transmission system
16637526204Optical communication apparatus, optical communication system and method for transmitting optical signal
16647526201Optical fiber transmission system with noise loading
16657526199Optical transmission equipment preventing malfunction in recovery from fault
16667522843Optical repeater converting wavelength and bit rate between networks
16677522842Optical transmission system using Raman amplification
16687522839Method of upgrading optical node, and an optical node apparatus
16697522836Optical logic gate based optical router
16707522835Method of testing bit error rates for a wavelength division multiplexed optical communication system
16717519296Optical demultiplexing method and optical multiplexing method, and optical transmission apparatus using same
16727519295Apparatus and method for commissioning an optical transmission system
16737515830Optical communication apparatus by using subcarrier multiple access and method thereof
16747515829Wavelength division multiplexing optical transmission system
16757515828System and method for implementing optical light-trails
16767515532Method, system, and storage medium for preventing duplication and loss of exchanges, sequences, and frames
16777509048Method and apparatus for optical signal processing using an optical tapped delay line
16787505690Multi-channel all-optical signal processor
16797505687Distributed terminal optical transmission system
16807505647Method and apparatus for demultiplexing optical signals in a passive optical network
16817502562Distributed terminal optical transmission system
16827499652Modular add/drop multiplexer including a wavelength selective switch
16837493044Methods and apparatus for transmitting data
16847489840Optical link module, optical interconnection method, information processor including the optical link module, signal transfer method, prism and method of manufacturing the prism
16857486891Multi-port high isolation filters
16867483637Optical ring network with optical subnets and method
16877483636Optical network with sub-band rejection and bypass
16887483635Multi-wavelength pulse generator using time-lens compression
16897483631Method and apparatus of data and control scheduling in wavelength-division-multiplexed photonic burst-switched networks
16907483613Chromatic dispersion compensating fiber
16917480464Widely tunable, dispersion tolerant transmitter
16927480429Chip to Chip optical interconnect
16937474854Optical transmission system

2008

16947471902Wavelength allocation method of signal light, and optical transmission apparatus and wavelength division multiplexing optical transmission system using the method
16957471900Passive optical network system and method of transmitting broadcasting signal in same
16967471859Programmable optical grating device and method
16977469103Add/drop multiplexer for OTN/DWDM rings utilizing a pair of muxponders
16987469102Wavelength-division-multiplexing passive optical network utilizing fiber fault detectors and/or wavelength tracking components
16997466921Drop-and-continue device
17007466920Chromatic dispersion compensating apparatus
17017466881Optical switch
17027463832Thermal drift compensation system and method for optical networks
17037463829Optical transmission apparatus and control method therefor
17047463797Wavelength multiplexed light source and wavelength multiplexed light source system
17057460789Optical transmission system and method of controlling optical transmission system
17067457549Sub signal modulation apparatus, sub signal demodulation apparatus, and sub signal modulation demodulation system
17077457544Single channel four-port group delay compensation equalizer
17087457543Add/drop module for single fiber wavelength division multiplexing systems
17097454143Reconfigurable thin film based DWDM devices for reconfigurable add-drop optical systems
17107454142Data transmission method and data transmission apparatus
17117450859Optical subscriber network system
17127447436Optical communications using multiplexed single sideband transmission and heterodyne detection
17137447435Passive optical network
17147447433Optical communication device
17157444079Optical power control monitor for multiple wavelength fiber-optic networks
17167444078Transient control solution for optical networks
17177444055Integrated optics arrangement for wavelength (De)multiplexing in a multi-grade vertical stack
17187440698Optical transmitter system
17197440696Data multiplexing network, wavelength multiplexer, and data multiplexing transmission method
17207440650Planar lightwave circuit based wavelength selective switch
17217437075Integrated reconfigurable optical add/drop multiplexer
17227437074Wavelength division multiplexing transmission system
17237437069Automatic power restoring method and optical communication system
17247433603Using active and passive optical components for an optical network
17257433601Optical network and optical add/drop apparatus
17267433600Optical node device and system including the device
17277433599Automatic dispersion compensation device and compensation method
17287430346Non-blocking cyclic AWG-based node architectures
17297424226Optical code division multiplexing communication method and system
17307424220Optical transmission system with two-mode ring protection mechanism for prioritized client signals
17317421206Optical transceiver for transmitting light source control information and optical network using the same
17327421168Integrated optical channelizer
17337418206Control method of wavelength dispersion compensator, and wavelength dispersion compensator
17347418204Passive optical network system providing simultaneously both broadcasting service and data service
17357415210Bidirectional optical signal multiplexer/demultiplexer
17367412171Optical ring network architecture
17377412170Broad temperature WDM transmitters and receivers for coarse wavelength division multiplexed (CWDM) fiber communication systems
17387412167System and method for limiting the transmission capacity on a data transmission path
17397411947Storage system, computer system and interface module
17407411726Multi-channel differentially encoded phase shift keyed receivers
17417409159Wireless wavelength division multiplexed system
17427409157Optical switch
17437408701Multi-frequency light source
17447406262Optical transmission device
17457406244Method of using an ultrathin optical element
17467405859Method and apparatus for selecting wavelength
17477403714All optical chromatic and polarization mode dispersion correctors
17487403711Optical digital-to-analog converter and method of optically converting digital data to analog form
17497403676Optical waveguide module
17507394993Dispersion compensation quantity setting method, receiving terminal station, and wavelength-multiplexing optical transmission system
17517394986Flat top optical filtering component
17527394984Fiber access architecture capable of being seamlessly upgraded
17537391973Two-stage gain equalizer
17547389050Wavelength multiplexer/demultiplexing device
17557389049Chromatic dispersion compensation controlling system
17567389043Protection architecture for photonic switch using tunable optical filter
17577382979Wavelength dispersion compensation design method and a system thereof
17587379670Method and apparatus for chromatic dispersion compensation
17597379668Optical amplification in photonic switched crossconnect systems
17607376348Optical communication system
17617373039Low-ripple optical device
17627372607Apparatus for reducing drops in a transmission spectrum due to inter-pixel gaps
17637369774Optical frequency controlling device for ultra-dense wavelength-division-multiplexed optical channels
17647369773Methods and systems for polarization control and polarization mode dispersion compensation for wideband optical signals
17657369772Optical line terminal arrangement, apparatus and methods
17667366370Technique for photonic switching
17677366197Method and apparatus for adapting GBIC module to coupled Ethernet switch capable of outputting different voltages
17687362931Optical conversion device for shared FTTH distribution network
17697359638Optical source generator for wavelength division multiplexing optical communication systems
17707356259Optical bypass upgrade configuration
17717352968Chirped managed, wavelength multiplexed, directly modulated sources using an arrayed waveguide grating (AWG) as multi-wavelength discriminator
17727352928Tunable optical add/drop multiplexer
17737349632Method of wavelength selection control and wavelength variable filter device
17747349631Wavelength-tunable light source and wavelength-division multiplexed transmission system using the source
17757346280Bi-directional long haul/ultra long haul optical communication link
17767343097Optical transmission systems including optical amplifiers and methods of use therein
17777343096Method and apparatus for in-service upgrading of OADM to wavelength selective switch of higher degree
17787343095Optical interleaver
17797343094Transmission characteristics evaluation system and pseudo transmission path apparatus thereof
17807340177WDM optical communication system capable of monitoring temperature
17817340176Metropolitan area type optical telecommunications network comprising a ring type core
17827340175Non-uniform optical waveband aggregator and deaggregator and hierarchical hybrid optical cross-connect system
17837340174Programmable OADM with chromatic dispersion, dispersion slope and amplitude ripple compensation, and method
17847340173Wavelength division multiplexing optical transmitter using Fabry-Perot laser
17857336901Reconfigurable optical add-drop multiplexers employing optical multiplex section shared protection
17867333729Optical transmitter, optical receiver and optical transmission system using same
17877333728Methods and systems for polarization mode dispersion compensation
17887330660Optical time division multiplexer
17897330659Wavelength filter that operates on sets of wavelength channels
17907330658Device and method for optical add/drop multiplexing
17917330657Method to demultiplex wavelengths of light
17927330655WDM/SCM-PON and media access control method for asymmetric packet communication in the same
17937330650Bi-directional wavelength division multiplexing self-healing optical ring network
17947327958Transient-based channel growth for optical transmission systems
17957327957Wavelength-tunable light source and wavelength-division multiplexed transmission system using the source
17967327956Method and apparatus for mitigating intersymbol interference from optical filtering
17977327921Chromatic dispersion compensating optical fibre
17987327669OFDM modem system
17997324756Optical demultiplexer and optical transmission system
18007319823Modulation scheme and transmission system for NRZ signals with left and right side filtering
18017319819Suppression of four-wave mixing in ultra dense WDM optical communication systems through optical fibre dispersion map design
18027315697Light source for generating an output signal having spaced apart frequencies
18037315696Gain setting method in wavelength division multiplex transmission equipment

2007

18047313325Channel allocation method in multirate WDM system
18057310463Optical structural body, its manufacturing method and optical element
18067308201Optical communication system
18077308200Pre-emphasis control method in consideration of nonlinear deterioration
18087308197Modular add/drop multiplexer including a wavelength selective switch
18097305188Wavelength demultiplexing unit
18107305184Method and system for management of directly connected optical components
18117302189Optical component provided with demultiplexing function and wavelength dispersion compensator
18127302183Gain tilt compensators and their systems
18137302182Methods and apparatus for sensing multiple wavelengths simultaneously in a single wavelength sensing device
18147302181Single lens multiple light source device
18157302138Arrayed waveguide grating device
18167298976Bi-directional optical cross-connect device
18177298934Optical fiber and method of measuring polarization mode dispersion of optical fiber
18187298540Equalizing optical wavelength routers
18197295783Digital optical network architecture
18207295780Apparatus for detecting peaks of wavelength-division-multiplexed light, and apparatus for controlling said light
18217295779Wavelength division-multiplexing optical transmission system
18227295775Method and a system for monitoring the transmission of optical signals
18237295744Frequency-selective light coupler-decoupler device
18247295738System and method for performing dispersion compensation
18257292786Method and system for a re-configurable optical multiplexer, de-multiplexer and optical add-drop multiplexer
18267292784High speed optical routing apparatus and method
18277292755Optical resonator formed in a planar optical waveguide with a distributed optical structure
18287289740WDM regenerated transmission system
18297289735Apparatus for emitting light with controllable degree of polarization
18307289733High reflection isolation optical devices and the method for making the same
18317289689Combinatorial polarization scramblers for many segment PMD emulator
18327286765Configurable optical signal processing device with wideband sources
18337286764Reconfigurable modulator-based optical add-and-drop multiplexer
18347286763Optical add/drop multiplexer having a banded channel configuration
18357286759System and method for dynamic wavelength assignment in wavelength division multiplex ring networks
18367286732Distributed optical structures designed by computed interference between simulated optical signals
18377283750System and method for setting a tunable filter in an optical network
18387283744Performance monitoring based on optical autocorrelation
18397280763Terminal apparatus and controlling method for optical output power
18407280762Optical communication system having dynamic gain equalization
18417280761Device and method for setting add signal level for OADM system
18427280760Upgradeable optical add/drop multiplexer
18437280759Optical transmission system, optical multiplexer, and optical demultiplexer
18447280758Optical multi-ring network for burst data communication
18457280754Two-fiber optical ring network
18467280720Apparatus, system and method for a tunable optical filter and channel dropping de-multiplexer
18477277648Network element for use in an optical communication network, in particular a DWDM communication network
18487277640Optical add/drop multiplexing systems
18497277639Bi-directional optical add/drop multiplexer for WDM optical networks
18507277638Add-drop-multiplexer and optical wavelength division multiplex transmission system
18517274878Dispersion compensation method in optical communication system having optical add drop multiplexing capability
18527274875Optical channel power equalizer
18537274873Optical transmission systems including optical switching devices, control apparatuses, and methods
18547272325Optical transmission system for substantially equalizing the output signal level among frequency bands and substantially lowering the signal-to-noise ratio
18557272323Bi-directional electrical to optical converter module
18567272316Wavelength-division-multiplexed optical source and passive optical network system employing the same
18577272311Optical ring network for burst data communication
18587272307Virtual protection channel for fiber optic ring network
18597272270Optical modulator and method of manufacturing same
18607269352Wavelength division multiplexing light source apparatus using semiconductor optical amplifier
18617269351Multi-channel optical loading channel transmitter
18627269349Method of and device for performing bi-directional transmission using a single-wire
18637269185Management and control of multi-layer networks
18647266300BPSR optical transmission node
18657266299Add/drop-drop and continue-module and drop and continue module
18667266294Coupler-based optical cross-connect
18677266264Apparatus and method of compensating transmission property of light demultiplexer/light multiplexer
18687263291Wavelength division multiplexing source using multifunctional filters
18697263258Programmable optical grating device and method
18707262913Chromatic dispersion and dispersion slope compensating apparatus
18717262904Tunable optical add/drop device
18727260328Optoelectronic assembly for multiplexing and/or demultiplexing optical signals
18737260326Wavelength-division multiplex system and a method of automatically setting conversion wavelengths of such a system
18747257120Quality of service (QoS) based supervisory network for optical transport systems
18757254340Apparatus and method for tracking optical wavelength in WDM passive optical network using loop-back light source
18767254339Power controlling network element
18777254338Multi-wavelength light source
18787254337Band optical add/drop multiplexing
18797254336Method of seamless migration from scaleable OADM to a network switching node
18807254335Stackable WDM arrangement
18817254334Multiplex optical communication system
18827254333Low-cost WDM terminal device accommodating plurality of client signal
18837254332Wavelength division multiplexing passive optical network system
18847254293Wavelength routing optical switch
18857248803Wavelength multiplex transmission systems
18867245829Architecture for dynamic connectivity in an edge photonic network architecture
18877242865Optical communication system
18887242864Technique for power control in optical networks
18897239809Electrical pulse transformation using optical delay lines
18907239807Variable clamp equalization method and apparatus
18917239772Flexible waveband aggregator and deaggregator and hierarchical hybrid optical cross-connect system
18927236708Optical communication system with optical output level control function
18937236704Optical add/drop multiplexer utilizing variable optical attenuator
18947236703Optical wavelength division multiplexing device
18957233743Lightpath segmentation system and method in a generalized multi-protocol label switching network
18967233742Optical communication system, method for supplying pump light, and distributed Raman amplifying apparatus
18977233741Optical exchange for wavelength division multiplexed (WDM) network, and optical exchange method for WDM network
18987233727Optical fiber and optical device using the same
18997233719Dispersion slope compensator
19007233443Arrangement for WDM multiplexing and demultiplexing
19017233430Multi-channel DPSK receiver
19027231150Method and apparatus for sensing a temperature along an optical path in semiconductor material
19037231149Bidirectional optical add-drop multiplexer
19047231148Flexible open ring optical network and method
19057228076Method for remodulation of a modulated optical signal and device for remodulation and transmission system
19067228075Wavelength multiplexing apparatus and signal conversion apparatus
19077228071Wavelength division multiplexing optical switching system
19087228021Bidirectional optical add/drop multiplexer and wavelength division multiplexed ring network using the same
19097224902Optical encoding method and encoder for optical code division multiplexing
19107224899Optical transmission system
19117224896Methods and apparatus for generating local oscillation signals
19127224867Holographic spectral filter
19137224855Optical multiplexing device
19147224519Low noise multi-wavelength light source and wavelength division multiplexing system using same
19157221871Identification of polarization-mode dispersion on a communication network
19167221820High spectral efficiency, high performance optical MUX and DEMUX architecture
19177221815Optical sensor multiplexing system
19187218858System and method for use of a variable optical attenuator in an optical network
19197218857Method, apparatus and system for a re-configurable optical add-drop multiplexer
19207218856System for compensating for chromatic dispersion and polarization mode dispersion
19217218813Optical communication system
19227218805WDM ring network for flexible connections
19237215885Wavelength division element and optical module
19247215884Optical demultiplexer having bragg diffration grating and optical communication module using the optical demultiplexer
19257212712Coupler-multiplexer permutation switch
19267212708Optical grating based multiplexer device with power tap capability
19277209662Wavelength multiplex transmission device
19287209661Wavelength multiplexing method and an apparatus thereof
19297209660Optical communications using heterodyne detection
19307209654Optical transmission system
19317209619Photonic bandgap fibers
19327209612Two-stage optical bi-directional transceiver
19337209609Light source apparatus for WDM optical communication and optical communication system
19347209454Self-configuring distributed switch
19357206513Polarization mode dispersion compensation apparatus using a photonic crystal structure
19367206512Method of controlling optical wavelength division multiplexing transmission apparatus
19377206508Method and apparatus for operation, protection, and restoration of heterogeneous optical communication networks
19387203423Methods and systems for polarization mode dispersion compensation
19397203385Optimizing PMD measurements based on temperature for installed fibers
19407200333Optical communication apparatus, system, and method that properly compensate for chromatic dispersion
19417200329Wavelength path monitoring/correcting apparatus in transparent optical cross-connect and method thereof
19427199926Diffraction grating device and optical apparatus
19437199924Apparatus and method for spectral-beam combining of high-power fiber lasers
19447197247WDM optical communication system
19457197246Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer
19467197245System and method for managing system margin
19477194205Optical transmission apparatus and optical systems
19487190904Wavelength modulation for optical based switching and routing
19497190898Dynamic wavelength management method in OBS networks
19507190868Optical transmission line
19517190859Distributed optical structures in a planar waveguide coupling in-plane and out-of-plane optical signals
19527187869Method for adjusting time delays and device for synchronization of channels in a WDM system
19537187868Wavelength division multiplexing optical transmission system using a spectral inversion device
19547187866System for distributing information and energy using fiber optic and optical wireless networks
19557187824Method of producing and improving an optical transmission line, and associated compensation modules
19567187817Awg coupler for separating electromagnetic radiation of various wavelength regions, and a telecommunications system
19577184666Reconfigurable optical add-drop multiplexer
19587184665Tunable dispersion compensator
19597184627Optical waveguide grating coupler incorporating reflective optical elements and anti-reflection elements
19607182528Diffractive grating member and optical communication module
19617181095Low loss, noise filtering multiplexer/demultiplexer for reconfigurable OADMs
19627181094Apparatus for controlling acousto-optic tunable filter and method of selecting wavelength
19637177545Optical filter and transmission system incorporating an optical filter
19647177493Programmable optical add/drop multiplexer
19657174104Transmitting apparatus using multiple lambda source in WDM network
19667171124Wavelength routing and switching mechanism for a photonic transport network
19677171123Method for decreasing and compensating the transmission loss at a wavelength-division-multiplexed passive optical network and an apparatus therefor
19687171089Enhanced supercontinuum generation in highly nonlinear fibers using post-fabrication processing
19697171073Structure and method for multi-ports optical apparatus
19707167652Optical transmission system constructing method and system
19717167647Wavelength division multiplexing optical performance monitors
19727164865Optical fiber communication equipment and its applied optical systems
19737164863Network transceiver for extending the bandwidth of optical fiber-based network infrastructure
19747162156Bi-directional single fiber optic link for data and radio frequency transmissions
19757162118Dual optical switch
19767161725Frequency locker
19777158725Saturable light absorber structure and a device incorporating the structure for regenerating a wavelength division multiplexed signal
19787158720Optical shared protection ring for multiple spans
19797158695Optical delay circuit, integrated optical device, and method of manufacturing integrated optical device

2006

19807155128Decorrelation of WDM signals
19817155077Optical fiber based surface sensing system that enables spectral multiplexing
19827151896Burst optical communication apparatus
19837151880Dispersion-managed optical soliton transmission system
19847151875Method and apparatus for balancing the power of optical channels traversing an optical add drop multiplexer
19857149434System and method for optical communication
19867149387Double diffraction grating with flat passband output
19877146103Optical communications using multiplexed single sideband transmission and heterodyne detection
19887146101Optical media management channel
19897146077Optical coupler type filter and wavelength stabilizing apparatus of light source using the same
19907146071Optical transmission system
19917142782Noise light elimination method, noise light elimination apparatus and optical transmission system, using stimulated brillouin scattering
19927139486Method and apparatus for optical add/drop multiplexing in optical networks
19937139485Channel balancing of a wavelength division multiplexed optical signal
19947139484Signal transmission method in WDM transmission system, and WDM terminal, optical add-drop multiplexer node, and network element used in the same system
19957139475Ring type fiber optic protection
19967139453Variable dispersion compensator utilizing wavelength conversion
19977136590Self-adjustable tunable filter
19987136589Re-configurable optical add-drop multiplexer
19997136588Apparatus and method for optical add/drop multiplexing
20007136586Optical communication system
20017136553Tunable demultiplexer and tunable laser with optical deflector
20027134796XFP adapter module
20037133616Wavelength-selective routing using an optical add/drop architecture
20047133615Two-optical signal generator for generating two optical signals having adjustable optical frequency difference
20057133610Optical sender, terminal device, and optical communication system each having the optical sender
20067133587Dispersion compensator, method for manufacturing the same, and method for compensating wavelength dispersion
20077133193Optical transmission systems including optical amplifiers, apparatuses and methods
20087130542Modular multiplexing/demultiplexing units in optical transmission systems
20097130540Optical transmission systems, devices, and methods
20107130539All optical decoding systems for optical encoded data symbols
20117130504Optical demultiplexing device and optical monitoring device
20127127173Method of adjusting power for a wavelength-division multiplexed optical transmission system
20137127172Optical frequency filter
20147127171Architectural arrangement for bandwidth management in large central offices
20157127170Optical frequency division multiplexing network
20167127169Fiber optic tunable add-drop multiplexer/demultiplexer
20177127140Fiber bragg grating device
20187127133Monolithically integrated optic triplexer and method for making same
20197123838Optical time-division multiplex signal processing apparatus and method, optical time-division multiplex signal receiver
20207123837Optical ring network architecture
20217123834Transmission system and method for equalization of channels in the system
20227123793Modulator array architectures
20237123633Method for maintaining mode-locked state of fabry-perot laser irrespective of temperature change and WDM light source using the same method
20247120361Wavelength tunable multiplexing and demultiplexing filter device and wavelength routing device
20257120358Optical packet routing network system based on optical label switching technique
20267120357WDM device, client device, network, system and method for allocating wavelength of WDM to a client signal
20277120334Optical resonator formed in a planar optical waveguide with distributed optical structures
20287116908Optical transmission system for substantially equalizing the output signal level among frequency bands and substantially lowering the signal-to-noise ratio
20297116905Method and system for control signaling in an open ring optical network
20307116904Optical communications system
20317116876Optical fiber for metro network
20327116874Enhanced supercontinuum generation in highly nonlinear fibers using strong bragg gratings
20337113709Redundant WDM transmission system optical receiver with reduced variable optical attenuators and/or variable dispersion compensation modules
20347113704Tunable add/drop node for optical network
20357113703Optical transmission system and optical transmission device
20367113702Wavelength division multiplexing optical transmission system and transmission method
20377113666Method and apparatus for spectrum deconvolution and reshaping
20387113662Optical filtering by using an add-drop node
20397110676Power pre-emphasis for WDM transmission systems
20407110675Methods of optical communication and optical communication systems
20417110674Optical add/drop device
20427110673Optical communication system
20437110672Optical transmission system for frequency-multiplexed signal
20447110669Time driven wavelength conversion-based switching with common time reference
20457110648Analog optical transmission system
20467110638Reconfigurable optical node with distributed spectral filtering
20477106970Polarization scrambler and optical network using the same
20487106969Optical network terminator
20497103278Virtual concatenation of optical channels in WDM networks
20507103277Fiber-to-the-premise architectures
20517103249Optical module and manufacturing method of the same, optical-communication apparatus, and electronic apparatus
20527099586Reconfigurable multi-channel all-optical regenerators
20537095958Fiber access architecture capable of being seamlessly upgraded
20547095912Technique for mitigation of polarization mode dispersion in fiber optic transmission links
20557092637Receiving apparatus, transmitting apparatus, and communication system
20567092635Apparatus and method for stimulated Brillouin scattering suppression using supervisory channel
20577092601Thin film filter with waveguide substrate
20587092598Chip-scale WDM system using grating-outcoupled surface-emitting lasers
20597092595Multiple-wavelength pulsed light source for a wavelength division multiplexed passive optical network
20607092587Multichannel optical demultiplexer with varying angles of incidence to the light bandpass filters
20617088924Receiving apparatus, transmitting apparatus, and communication system
20627088923Receiving apparatus, transmitting apparatus, and communication system
20637088922Wavelength division multiplexing optical communication system
20647088885System for modulating optical signals
20657085497Vehicular communication system
20667085496Passive add/drop amplifier for optical networks and method
20677085242Virtual IP topology reconfiguration migration
20687082266Optical filter and apparatus and method for monitoring optical channel using the optical filter
20697079771Wavelength multiplexing transmission apparatus and wavelength demultiplexing reception apparatus
20707079770System and apparatus for dropping and adding optical data streams in an optical communication network
20717079769Dispersion-compensating system
20727079728Wavelength multiplexing processing apparatus
20737076163Method and system for testing during operation of an open ring optical network
20747076132Optical devices and methods
20757072592Differential dense wavelength division multiplexing (DDWDM) in optical systems
20767072588Multiplexed distribution of optical power
20777072584Network hub employing 1:N optical protection
20787072580Autoprotected optical communication ring network
20797072545Dispersion compensator, method for manufacturing the same, and method for compensating wavelength dispersion
20807072538Planar reconfigurable optical add/drop module
20817068949Multi-wavelength locking method and apparatus for wavelength division multiplexing (WDM) optical communication system
20827068940System and method for monitoring and controlling light propagation in an optical transmission system
20837068939Dynamic power optical splitter
20847068938Band optical add/drop multiplexing
20857068886Millimeter wave oscillator using fiber Bragg grating
20867068885Double diffraction grating planar lightwave circuit
20877065280Dispersion compensation device
20887062178Photodetector array and optical branching filter using the array
20897062173Optical device and wavelength division multiplexing communication system using same
20907062172Optical transmission system for frequency-multiplexed signal
20917062169Systems and methods for compensating for signal transients
20927062166First and second derivative processing of wavelength multiplexed optical signals
20937062128Holographic spectral filter
20947061657Multichannel optical communication system and method utilizing wavelength and coherence division multiplexing
20957058314Method and system for reducing intra-channel nonlinear effects in highly dispersed optical pulse transmission
20967058301Apparatus and method for planned wavelength addition and removal in a wavelength division multiplexed system
20977058257Miniature WDM add/drop multiplexer and method of manufacture thereof
20987054562Method and system for suppressing ASE on a WDM network
20997054561Reduction of polarization-dependent loss from grating used in double-pass configuration
21007054560Configuration for detecting optical signals of a planar optical circuit
21017054559Method and system for modular multiplexing and amplification in a multi-channel plan
21027054526Optical multiplexer/demultiplexer
21037054057Multi-frequency light source
21047050719Wavelength division multiplexing receiver for wavelength tracking
21057050658Method and apparatus for reducing system deterioration caused by polarization effects
21067043159Bidirectional optical networks
21077039319DWDM laser frequency control
21087039318Dispersion discrimination and compensation system and optical switch for use therewith
21097039272Optical transmission equipment with dispersion compensation, and dispersion compensating method
21107035544Identification of related communications channels in a wavelength division multiplexed optical network
21117035543Method and system for demultiplexing non-intensity modulated wavelength division multiplexed (WDM) signals
21127031618Optical transmission system in which gains in gain bands are remotely controlled by transmitting tone signals having variable characteristics
21137031611Optical routers using angular position amplification modules
21147031609Optical add-drop multiplexer
21157031608Optical packet node and optical packet add drop multiplexer
21167031606Method and system for monitoring performance of optical network
21177031559Technique for mitigation of polarization mode dispersion in fiber optic transmission links
21187027740Method and apparatus for extending optical communication
21197027739Receiving apparatus, transmitting apparatus, and communication system
21207027738Receiving apparatus, transmitting apparatus, and communication system
21217027735Unequal pulse spacer
21227027734Dynamic multi-channel power equalizer and regulator
21237027684Wavelength selective switch
21247024121Optical clock signal distribution system in WDM network
21257024117Method and apparatus for adjusting tilting and level of optical signals
21267024116Optical add drop multiplexer
21277024078Fiber device with high nonlinearity, dispersion control and gain
21287024058Apparatus for compensating polarization mode dispersion
21297020402Crosstalk compensation engine for reducing signal crosstalk effects within a data signal
21307020396Opto-electronic ultra-wideband signal waveform generator and radiator
21317020358Wavelength division demultiplexing apparatus
21327016610Self-adjusting optical add-drop multiplexer and optical networks using same
21337016609Receiver transponder for protected networks
21347016581Dispersion compensation unit and optical communication system
21357016378Method and system for automatically provisioning an overhead byte
21367016097Optical device with a temperature insensitive optical pathlength
21377014326Wavelength blocker
21387013086Access node for optical networks with variable-access wavelengths, user device for connection to such an access node, method for feeding a number of signals from a number of users into an optical network and using an access node and at least one user device for carrying out such a method
21397010229Optical transmission systems including optical amplifiers and methods
21407010228Optical add-drop multiplexer
21417010189Optical monitoring apparatus for use in wavelength division multiplexing network
21427006767System for transparent node for WDM shared "virtual ring" networks
21437006765Optical network monitor
21447006727Combined multiplexer and demultiplexer for optical communication systems
21457003229Method for optimizing the sequence of passive filter configuration in optical mux/demux devices for wavelength division multiplex transmission systems and optical passive filter system obtained with that method
21467003226Wavelength division multiplex optical transmission system
21476999686Wavelength management in an optical network
21486999683Optical fiber transmission system with noise loaded idler channels
21496999680WDM transmission system, central controller for the system, and method for controlling preemphasis in the system
21506999655Optical communication system and optical communication method having confidentiality
21516999654Connection of on an add/drop node
21526999648Optical cross-connect apparatus
21536996307Variable-bandwidth multi-granularity optical add/drop network
21546996302Optical demultiplexer, optical multi-/demultiplexer, and optical device
21556993261Receiving apparatus, transmitting apparatus, and communication system
21566993258WDM transmitter
21576985308Telecommunications optical processor

2005

21586968131Topology discovery in optical WDM networks
21596967769Optical transmission systems and optical amplifiers for use therein
21606965739Optical communication system
21616965561Terminal multiplexer structure
21626963695Optical communication system and method of assigning signal channels
21636961525Method for channel balance
21646961522Automatic raman gain and tilt control for ultra-long-distance dense WDM optical communication system
21656959153Dynamically reconfigurable add/drop multiplexer with low coherent cross-talk for optical communication networks
21666959151Communication network
21676959149Power balancing in DWDM optical networks
21686958908Compact enclosure for interchangeable SONET multiplexer cards and methods for using same
21696956998Compact optical delay lines
21706956687Optical blocking filter having an array of micro-mirrors
21716954593Burst optical communication apparatus
21726954573Wide band dispersion-controlled fiber
21736952511Gain equalizer and optical amplification apparatus
21746950609Tunable, multi-port optical add-drop multiplexer
21756947670Optical add/drop arrangement for ring networks employing wavelength division multiplexing
21766947631Waveguide-type optical multiplexer/demultiplexer
21776947377Path network and path network operation method using conversion of protection path into working path
21786945711Multiplexer with a dense wavelength division multiplexing function
21796944406Transport system with tunable channel spacing DWDM
21806944404Network transceiver for extending the bandwidth of optical fiber-based network infrastructure
21816944401Gain equalization in DWDM networks
21826944399Methods of signal substitution for maintenance of amplifier saturation
21836943938Tunable wavelength filter with invariant transmission and reflection beam angles
21846941075Wavelength division multiplexing optical transmission method and system
21856941072Compact optical multiplexer/demultiplexer
21866940624Wavelength division multiplexed optical communication system having reduced non-linear effects
21876937823Method for preventing lasing in an optical ring network
21886937820Optical level control method
21896937785Optical communication system using 4 wavelength add/drop type wavelength division multiplexing
21906934479Wavelength division multiplexing optical communication system and wavelength division multiplexing optical communication method
21916934477Method and apparatus for free-space optical communication without eletro-optical conversion
21926934474Bidirectional add/drop multiplexer
21936934473Optical systems including add drop devices and methods
21946934472Optical layer multicasting using a single sub-carrier header and a multicast switch with active header insertion
21956934469Split redundant trunk architecture using passive splitters and path switching
21966934433Control method and control apparatus of optical device
21976934069Chromatic dispersion compensation device having an array of micromirrors
21986933852Optical switching apparatus and optical communication network system
21996931213Regenerator for a wavelength division multiplex transmission system
22006931176Reconfigurable optical add/drop multiplexer with buried dispersion compensation module
22016931175Optical node with add-drop or cross-connect functionality
22026930824Optical amplifier which compensates for dispersion of a WDM optical signal
22036928247WDM ring transmission system
22046928245Method for configuring WDM ring optical networks
22056928243Optical performance monitoring apparatus for a WDM optical communication system
22066928214Array waveguide grating, array waveguide grating module, optical communication unit and optical communication system
22076927913Optical signal processing apparatus
22086927897Optical amplifier
22096925263Method and apparatus for transmission of upstream data in an optical network
22106925259MAC protocol for optical packet-switched ring network
22116925256Optical discriminator for transmitting and receiving in both optical fiber and free space applications
22126925218Control techniques and devices for an optical switch array
22136925212Optical transmission apparatuses, methods, and systems
22146924924Multi-wavelength generating method and apparatus based on flattening of optical spectrum
22156922530Method and apparatus for optical channel switching in an optical add/drop multiplexer
22166922431Communication using spread spectrum methods over optical fibers
22176920508WDM ring network
22186920290Multi-wavelength high bandwidth communication receiver and system
22196920288Method for automatically provisioning a network element
22206920261Cross phase modulation suppressing device in wavelength division multiplexing optical transmission system and optical communication system
22216920185Distributed block frequency converter
22226917761Optical multiplexing transmission apparatus and system
22236917760Wide passband optical interleaver
22246917747Compact hybrid integrated optical dynamic channel equalizer
22256917744Optical multiplexing and demultiplexing device, optical communication apparatus, and optical communication system
22266915079Non-return optical star coupler
22276915077System and method for increasing channel capacity of fiber-optic communication networks
22286915075Protection of WDM-channels
22296915036Field reconfigurable line cards for an optical transport system
22306912359Methods for monitoring performance in optical networks
22316912340Optical ring interconnect
22326909848Self-adjusting bit rate transducer in optical transmission system
22336909823Acousto-optic tunable apparatus having a fiber bragg grating and an offset core
22346909531Optical (de-)interleaver and method of (de-)interleaving optical signals
22356907200Dispersion compensating module, line switching apparatus and optical communication system
22366907197Method and apparatus for measuring and estimating optical signal to noise ratio in photonic networks
22376907195Terminals having sub-band substitute signal control in optical communication systems
22386907167Optical interleaving with enhanced spectral response and reduced polarization sensitivity
22396907159Configurable optical add/drop multiplexer with enhanced add channel capacity
22406907158Configurable optical add/drop multiplexer with partial or complete wavelength drop capability
22416907006Method and apparatus for detecting faults in IP packet communication
22426906804WDM channel monitor and wavelength locker
22436904438Method and system for channel count and power control in optical networks
22446904241Power balanced optical add multiplexer and power balancing methods therefore
22456904240Optical multiplexing apparatus and optical multiplexing method
22466904239Wavelength associative addressing system for WDM type light packet steering
22476901184Frequency comb for an optical WDM network
22486900898Temperature insensitive Mach-Zehnder interferometers and devices
22496898376Optical ring protection apparatus and methods
22506898345Optical multiplexer and method for its production
22516895186System for accessing a wavelength-division-multiplexed bidirectional optical fiber ring network
22526895185Multi-purpose optical fiber access network
22536895183Optical add-drop multiplexer
22546895142Branching unit
22556895141Control method and device for optical filter, and optical node device
22566895140Single-mode optical fiber and composite optical line
22576892032WDM optical network with passive pass-through at each node
22586892016Optical threshold devices and methods
22596892001Optical packet header identifier, optical router incorporating the same therein, and optical routing method using the router
22606891981Optical transmission apparatuses, methods, and systems
22616889008Two-optical signal generator for generating two optical signals having adjustable optical frequency difference
22626889007Wavelength access server (WAS) architecture
22636888856Method and apparatus for filtering an optical beam
22646888846Data transfer in an optical network communication system
22656885825Power balanced optical add/drop multiplexer and power balancing methods therefore
22666885824Expandable optical array
22676885821Full-duplex optical add/drop communications system utilizing central light sources
22686885820Method for controlling the signal/noise ratio of optical add/drop signals
22696885807High speed fiber-optic attenuation modules
22706885713Electromagnetic matched filter based multiple access communications systems
22716885499Optical amplifying apparatus for amplifying wide-wavelength-band light, optical sending apparatus, optical transmission system, and optical amplifying method
22726882802Modulator and method of modulating optical carrier with clock signal before or after the carrier is modulated with data pulse
22736882801Wavelength division multiplex optical star coupler, communication station, and optical transmission system
22746882798Optical transmission apparatus with an optimal routing and data transmitting capability and a method of determining an optimal route on optical transmission
22756882771Apparatus and method for providing gain equalization
22766882765Connection protection between clients and optical cross-connect switches
22776879742Using intensity and wavelength division multiplexing for fiber Bragg grating sensor system
22786879619Method and apparatus for filtering an optical beam
22796879434Distributed raman amplifier for optical network and method
22806878958Vertical cavity surface emitting laser with buried dielectric distributed Bragg reflector
22816876781Micro-nano scale hetrodyne wavelength division demultiplexing for microscopy/tomography having parallel data acquisition
22826876475Dual modulator wavelength-selective switch and equalizer
22836873795Apparatus for detecting peaks of wavelength-division-multiplexed light, and apparatus for controlling said light
22846873758Optical add-drop filter
22856873457Optical amplifier, excitation light source control method for use in optical amplifier, and optical amplifier control method
22866873456Optical amplifying repeater apparatus and optical amplifying/repeating transmission system
22876871020Power spectrum monitoring and management in a wavelength division multiplexed network
22886868237Terrestrial optical communication network of integrated fiber and free-space links which requires no electro-optical conversion between links
22896868233Wavelength agile optical transponder for bi-directional, single fiber WDM system testing
22906868205Wavelength router
22916868203Optical transmission system
22926868200Wavelength division multiplexing optical transmission apparatus
22936868102CS-RZ optical clock signal generator, and a resynchronized optical multiplexer containing such a generator
22946867909Filter with variable transmission character, optical transmission equipment and method of optical transmission
22956865024Multi-functional optical device utilizing multiple polarization beam splitters and non-linear interferometers
22966865016Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied
22976865015Method and transmission system for optimization of the transmission characteristics of an optical wavelength division multiplex system
22986864968Method of measuring wavelength dispersion amount and optical transmission system
22996862395Attenuation devices
23006862303Multiwavelength locking method and apparatus using acousto-optic tunable filter
23016859623Wavelength allocation scheme and WDM equipment
23026859622Predictive optimization of wavelength division multiplexed systems
23036859317Diffraction grating for wavelength division multiplexing/demultiplexing devices
23046859308Optical amplifier
23056856768Dynamic add/drop of channels in a linear-optical-amplifier-based wavelength-division-multiplexed system
23066856767Optical signal quality selection system
23076856752Device and method for variable attenuation of an optical channel
23086856719Optical switch system
23096856592Method of providing restoration routes in a mesh network
23106856454Dynamic optical spectral control scheme for optical amplifier sites
23116856451Optical communication system
23126853654Tunable external cavity laser
23136853487Multi-functional optical device utilizing multiple polarization beam splitters and non-linear interferometers
23146850708Distributed intelligence wavelength division multiplexed network
23156850707Secure optical layer multicasting to effect survivability
23166850705Online distributed path routing method and system
23176850663Equipments including transponder for optical fiber transmission
23186850660Transmission apparatus
23196850655Optical apparatus with faraday rotator, static gain flattening filter and variable optical attenuator
23206850515Optical layer multicasting using a single sub-carrier header and a multicast switch with active header insertion via light circulation
23216850364Method and apparatus for an optical multiplexer and demultiplexer with an optical processing loop
23226847788System and method for equalizing transmission characteristics in wavelength division multiplexing optical communication system
23236847787WDM network node module
23246847786Compact wavelength filter using optical birefringence and reflective elements
23256847742Tunable dynamic gain flattening filter using polarization delays
23266847477Optical system for converting light beam into plurality of beams having different wavelengths
23276845188DC WDM device and DC WDM system and transmission network using the same
23286845187Linear optical beam translator for optical routing
23296845185High-speed wavelength channel selector and high-speed photonic integrated circuit-type space and wavelength multiplexed channel selector employing the same
23306844977Multi-channel optical filter
23316842562Optical add/drop node and method
23326842560Optical multiplexing circuit and optical multiplexer
23336842497Data filtering apparatus and method of filtering a plurality of data signals
23346842126Block coding system and method for data aggregation
23356839482Tunable optical filtering device and method
23366839162Optical amplifying apparatus and optical communication system
23376839161Optical amplification apparatus
23386839160Method of activating optical communication system, channel increasing/decreasing method, and computer-readable recording medium

2004

23396836621Tunable device for and method of extracting and inserting optical carriers in optical communications networks
23406836604Passive optical channel equalizer apparatus, methods and systems
23416836594Array waveguide grating, array waveguide grating module, optical communication unit and optical communication system
23426836593Optical fibre comprising a bragg grating and tunability means
23436833948Method for implementing power equalization of dense wavelength division multiplexing system
23446832051Dispersion managed optical transmission links for wavelength division multiplexed systems
23456832027Interleavers for AWGs
23466832017Bidirectional add/drop multiplexer and bidirectional add/drop amplifier module for band-split bidirectional networks
23476831784Multilayered optical thin-film filter, method of designing the same and filter module utilizing the same
23486831774Multi-wavelength generating method and apparatus based on flattening of optical spectrum
23496829438Add/drop multiplexing in WDM optical networks
23506829216Method and system for designing a network
23516829096Bi-directional wavelength division multiplexing/demultiplexing devices
23526829083Method for gain equalization, and device and system for use in carrying out the method
23536826349Wavelength router
23546826331Method of extracting spectral parameters of channels from non-channelized light
23556826326Quasi-hitless tunable add-drop filters
23566826201Multiplexing SONET /SDH data streams using independent encoding schemes
23576825714Multichannel interferometer with phase generated carrier demodulation and quadrature error correction
23586823138Optical communications terminal station, optical signal transmission method, and optical signal increasing method in wavelength multiplexing system
23596823104Controlling messaging in an optical network
23606822975Circuitry for mixed-rate optical communication networks
23616822860WDM add/drop multiplexer module
23626820230Self synchronous scrambler apparatus and method for use in dense wavelength division multiplexing
23636819875Optical wavelength multiplexing transmission apparatus and optical output control method for optical wavelength multiplexing transmission apparatus
23646819666Optical layer multicasting using multiple sub-carrier headers with header detection, deletion, and insertion via reflective single sideband optical processing
23656819651COMMUNICATION SYSTEM, COMMUNICATION APPARATUS WHICH CAN BE CONNECTED TO COMMUNICATION SYSTEM, CONTROL METHOD FOR CONTROL SYSTEM, AND CONTROL METHOD FOR COMMUNICATION APPARATUS WHICH CAN BE CONNECTED TO COMMUNICATION SYSTEM
23666819481Bidirectional wave division multiplex systems
23676816683Wavelength division multiplexing communications network supervisory system
23686816681Analogous channel method for performance monitoring and equalization in optical networks
23696816680Optical communications network and nodes for forming such a network
23706816643Wavelength tunable demultiplexing filter device, wavelength tunable multiplexing filter device, and wavelength routing device
23716813425Fiber optic cable for increased transmission capacity and wavelength division multiplexing optical transmission system using the same
23726813413Method and a system for protecting data transmitted on an optical ring formed of a single optical fiber
23736813408Methods for performing in-service upgrades of optical wavelength cross connects
23746810215Optical repeater converting wavelength and bit rate between networks
23756810211Preferred WDM packet-switched router architecture and method for generating same
23766810171Dispersion-compensated optical wavelength router
23776809858Optical transmission systems and optical amplifiers for use therein
23786809846Optical switch and optical network
23796807379Device for regenerating optical signs
23806807377Parallel optical transmission/reception module
23816807376Gain equalizer which includes a plurality of optical filters for equalizing the gain of an optical amplifier
23826807371Reconfigurable add-drop multiplexer
23836807201Laser with phase controlling region and method for driving the same
23846804468WDM optical transmission system
23856804464Flexible and low cost wavelength management for optical networking
23866804434Multi-channel optical equalizer for intersymbol interference mitigation
23876804432Optical add-drop multiplexer
23886804429Reconfigurable wavelength multiplexers and filters employing micromirror array in a gires-tournois interferometer
23896804116WDM add/drop multiplexer module
23906801720Optical signal quality supervisory device
23916801686Methods and apparatus for measuring the power spectrum of optical signals
23926801310Liquid crystal modulator and polarization diversity optics for optical communications
23936798993WDM optical networks arranged for internetworking with packet networks
23946798991Optical communication systems, optical communication system terminal facilities, optical communication methods, and methods of communicating within an optical network
23956798965Low loss fiber optic jumper with electronic presence detection
23966798951Wavelength router with a transmissive dispersive element
23976798773Physically scoped multicast in multi-access networks
23986798565Method and arrangement for compensating for cross phase modulation
23996795652WDM optical network with passive pass-through at each node
24006795607Use of tunable laser for optical performance monitoring in WDM system
24016795606Optical ADD-DROP module which can be expanded modularly
24026795316WDM add/drop multiplexer module
24036792211Compact optical wavelength add/drop multiplexer
24046792210Hybrid optical add/drop multiplexing devices
24056792209Method and system for reducing non-linear cross talk in low dispersion optical fiber
24066788899Dynamic wavelength add/drop multiplexer for UDWDM optical communication system
24076788850Configuration for multiplexing and/or demultiplexing the signals of at least two optical wavelength channels
24086788837Method and apparatus for interleaving and switching an optical beam in a semiconductor substrate
24096785473WDM network and WDM network device
24106785472Broadband amplified WDM ring
24116785446Multi-channel optical equalizer for intersymbol interference mitigation
24126785430Method and apparatus for integrating an optical transmit module
24136785225Communication apparatus and communication system
24146785042Slope control of gain wavelength of raman amplification
24156783284Optical module for wavelength reference measurement in WDM systems
24166782205Method and apparatus for dynamic equalization in wavelength division multiplexing
24176782204Network with shared optical sources
24186782203Scalable optical demultiplexing arrangement for wide band dense wavelength division multiplexed systems
24196782201Four fiber ring network optical switching circuit using branched inputs
24206782200Packet-based optical communications networks
24216782168Apparatus for and method of monitoring wavelength multiplexed signal light as well as optical transmission system using the same
24226782158Apparatus and method for wavelength division multiplexing
24236782156Interleaved band demultiplexing/multiplexing system
24246782017Wavelength locker and wavelength discriminating apparatus
24256778780WDM utilizing grating-based channel separators
24266778736Dynamic variable optical attenuator and variable optical tap
24276778730Optical signal processing device
24286778721WDM switch using OADM and control method thereof
24296778719Optical device for wavelength interleaving or dissociation and optical switch
24306778278Temperature insensitive Mach-Zehnder interferometers and devices
24316775482Light receiver
24326775479WDM optical network with passive pass-through at each node
24336775478Optical TDM multiplexer, optical TDM demultiplexer, WDM/TDM converter and TDM/WDM converter
24346775432Method and apparatus for optical wavelength demultiplexing, multiplexing and routing
24356771907Optical ring system
24366771905Optical transmission systems including optical switching devices, control apparatuses, and methods
24376771852Two-fiber optical shared protection ring with a bi-directional 4.times.4 optical switch fabric
24386768871Optical layer multicasting using a multicast switch to effect survivability and security
24396768834Slab optical multiplexer
24406768831Optical add-drop multiplexing apparatus
24416766191System and method for in-vivo hematocrit measurement using impedance and pressure plethysmography
24426766114Optical layer multicasting using a single sub-carrier header and a multicast switch with active header insertion via single sideband optical processing
24436766113Control channel processor and switching mechanism
24446763194Optical transmission system and channel assigning method
24456763193Optical communication system optically combining both baseband and passband signals
24466762837Polarization compensator and wavelength division multiplexing apparatus using same
24476760549Optical layer multicasting using a multiple sub-carrier header and multicasting switch
24486760510Wavelength multiplex optical communication module
24496760504Optical switching system with power balancing
24506760158Multi-functional optical device utilizing multiple polarization beam splitters and non-linear interferometers
24516760137Wave division multiplexing communications system
24526760085Wavelength selecting module and wavelength selecting apparatus
24536757498WDM optical network with passive pass-through at each node
24546757497Optical layer multicasting using a single sub-carrier header and a multicast switch with active header insertion via reflective single sideband optical processing
24556757496Optical layer multicasting using a single sub-carrier header and an optical multicasting switch
24566757495Optical layer multicasting using a multiple sub-carrier header and a multicast switch with active header insertion via single sideband optical processing
24576757098Highly scalable modular optical amplifier based subsystem
24586754449Optical layer multicasting switch
24596754448Multiplex transmission apparatus
24606754413Optical multiplexer, demultiplexer and methods
24616754411Mach-zehnder based filter demultiplexers and method
24626754403Acousto-optic add/drop multiplexer with retro-reflection and wavelength selective optical cross-connect
24636751418WDM optical network with passive pass-through at each node
24646751413Channel mask definition for monitoring wavelength division multiplexing transmission systems
24656751373Wavelength division multiplexing with narrow band reflective filters
24666751192Network system and communication method
24676748176Optical dropping apparatus and optical add/drop multiplexer
24686748175Optical ring network having enhanced security and reduced loss
24696748174WDM optical network with passive pass-through at each node
24706748172Multi-channel light source generator in a WDM optical communication system
24716748171Method and system for providing multiple classes of services in dense wavelength division multiplexing optical networks
24726748150Apparatus and method for managing dispersion within an optical add/drop module
24736748135Method for determining interactions between a number of optical channels in a wavelength division multiplexed signal
24746748134Frequency allocation scheme and transmission system for polarization and wavelength division multiplexed signals with left and right side filtering
24756747792Optical amplifying method
24766744990WDM optical transmission system and an optical transmission line thereof
24776744989Optical transmission system, its method, and optical amplification transmission line
24786744988Device for applying time-delays to optical signals
24796744986Tunable wavelength add/drop multiplexer based on integrated optic devices
24806744984Method and system for alternative transmission traffic routing in dense wavelength division multiplexing optical networks
24816744983Optical switching matrix
24826744964System and method for controlling variable optical attenuators
24836744943Add-drop filter utilizing chiral elements
24846741813Interference-based DWDM optical interleaver using beam splitting and selective phase shifting and re-combining
24856741812Synchronous digital communications system
24866741811Optical cross-connect device and system having the device
24876741810Signal demultiplexing device and signal routing device in high speed transmission system
24886741771Structure for adjusting waveforms of optical filters used in a dense wavelength division multiplexing system
24896741408Thermally stable mounting for a diffraction grating device
24906738582Synchronization system for all optical slotted ring dynamic networks
24916738581Network control system for optical communication networks
24926738580Wavelength division multiplex transmission system using asymmetrical filtering
24936738579Synchronous digital communications system
24946738543Hitless tunable wavelength filters
24956738540Optical cross-connect switch using programmable multiplexers/demultiplexers
24966735725Method and apparatus for performance management of a multiplexed transmission system
24976735397Skew discovery and compensation for WDM fiber communications systems using 8b10b encoding
24986735392System and method for transmitting and restoring an optical signal
24996735391Automatic retrieval of wavelength-division multiplexed ring networks
25006735390Method and apparatus for terminating optical links in an optical network
25016735358Optical multiplexer and optical demultiplexer
25026731883System and method for demultiplexing in optical communication systems
25036731878Free space optical communication link with diversity
25046731876Packet transmission device and packet transmission system
25056731875Wavelength bus architecture for ultra-high speed dense wavelength division multiplexed systems
25066731838Athermalization and pressure desensitization of diffraction grating based WDM devices
25076731830Asymmetric compatible network element
25086731597Method and a system for interconnecting ring networks
25096728489Optical transmission system constructing method and system
25106728487Drive method for a plurality of acousto-optic filters, acousto-optic filter apparatus, and selective wavelength extension method
25116728486Communication system and method with optical management bus
25126728485Optical network
25136728484Method and apparatus for providing channel provisioning in optical WDM networks
25146728465Semi-reconfigurable subband OADM
25156728445Closed-loop control of tunable optical wavelength filters
25166728436Optical signal modulation method and optical signal transmission system for high speed transmission system
25176728207Self-healing ring network and a method for fault detection and rectifying
25186724996Apparatus and method for providing optical channel overhead in optical transport networks
25196724994Hybrid TDM/WDM demultiplexing in low duty cycle optical transmission systems
25206724955Add-drop multiplexer with signal amplification ability
25216724789Dense wavelength division multiplexing (DWDM) fiberoptic source
25226724526Inter-wavelength light power deviation monitoring method and optical equalizer and optical amplifier utilizing the method
25236724125Methods and apparatus for diffractive optical processing using an actuatable structure
25246721509Self-adjusting optical add-drop multiplexer and optical networks using same
25256721508Optical line terminal arrangement, apparatus and methods
25266721507Optical communications system
25276721506Method and system for delivering multi-band broadcast services in wavelength division multiplexed passive optical networks
25286721505WDM ring transmission system
25296721475Apparatus and method for providing gain equalization
25306721078Switchable interleaved channel separator devices and systems
25316718140Optical wavelength division multiplexing transmission network device
25326718139Optical fiber ring communication system
25336718138Digital-signal quality monitoring method and communications apparatus using this method
25346718093Integrated optical multiplexer and demultiplexer for wavelength division transmission of information
25356714742Polarization-division multiplexing based on power encoding of different polarization channels
25366711358Optical apparatus using a phase grating
25376711324Software model for optical communication networks
25386711313CDMA encoder-decoder, CDMA communication system, WDM-CDMA communication system
25396710916Grating-based dispersion compensation devices
25406710913Technique and apparatus for wave-mixing frequency translation in a network
25416708002Modular multiplexing/demultiplexing units in optical transmission systems
25426708000Photonic node, photonic nodes for transmission and reception, and method of restoring traffic upon occurrence of link failure in optical path network
25436707963Wavelength division multiplexing apparatus
25446707962Method for providing signal power tilt compensation in optical transmission systems
25456707823Network designing method and recording medium on which the control program is recorded
25466707550Wavelength monitor for WDM systems
25476707547Method and apparatus for analyzing wavelength-division multiplexed signal light
25486704513Enhanced tilt optical power equalizer
25496704512WDM optical channel dispersion compensating and monitoring apparatus and optical amplifier comprising the apparatus
25506704511Optical fiber transmission system with noise loaded idler channels
25516701090Wavelength division multiplexing signal number monitoring apparatus and method
25526701089Over-equalization for multi-span wavelength division multiplexed fiber optic communication systems
25536701087Optical power management in an optical network
25546701085Method and apparatus for data transmission in the wavelength-division multiplex method in an optical ring network
25556701042Arrayed waveguide grating module and device and method for monitoring optical signal using the same
25566701031Acousto-optical tunable filter, method of driving the same, and optical add/drop multiplexer
25576700896High-capacity WDM data network
25586697574Multiple input waveguide grating router for broadcast and multicast services
25596697546Optical node system and switched connection method
25606697189System and method for gain equalization in an optical transmission system
25616697188Radiation power equalizer
25626694102Optical configuration, in particular for bidirectional WDM systems, and a transceiving module for bidirectional optical data transmission
25636694100Space wavelength time-division multiple access optical transmission system
25646694099Power and wavelength management for mixed-rate optical data systems
25656693981Method and apparatus for identifying bit rate
25666693926MEMS-based selectable laser source
25676693739Method for gain equalization, and device and system for use in carrying out the method
25686690886Suppression of four-wave mixing in ultra dense WDM optical communication systems through optical fibre dispersion map design
25696690846Dispersion-compensated optical wavelength router
25706687463Communication system and method with optical banding
25716687462Wavelength slicer for optical signal switching
25726687461Active optical lattice filters
25736687423Optical frequency-division multiplexer and demultiplexer
25746684031Ethernet fiber access communications system
25756684006Apparatus and method for wavelength division multiplexing
25766684005Connection of an add/drop node
25776681082Wavelength division multiplexing optical transmission system, optical amplifier and dispersion compensator
25786678480Optical transmitter and optical communication system
25796678476WDM with optical interleaving for increased channel capacity
25806678475Method of transmitting a concatenated signal
25816678473Cross-connect device and a method for switching using space switching and grouping of channels
25826678080Optical add/drop multiplexer
25836674969Two-optical signal generator for generating two opticle signals having adjustable optical frequency difference
25846674968Passive thermal stabilization for an optical mux/demux
25856674966Re-configurable fibre wireless network
25866674937Optical wavelength routing circuits
25876674558High-throughput, low-latency next generation internet networks using optical label switching and high-speed optical header generation, detection and reinsertion

2003

25886671437Method and device for tunable frequency selective filtering of optical signals
25896671434Optical performance monitor
25906671084Optical amplifier
25916668139Bidirectional multichannel optical telecommunication system
25926668138Apparatus and methods for maintaining balanced communication channels with increasing service demands
25936668137Feed forward optical power control
25946668106Crosspoint microwave switching architecture for optical telecommunications
25956665499Parallel optical transmission/reception module
25966665496WDM ring transmission system
25976665459Wavelength selective optical filter
25986665115Use of OPA for switching and routing in WDM networks
25996665113Wavelength converter and wavelength division multiplexing transmission method using same
26006662367Poly-phase filters in multicarrier communication systems
26016661973Optical transmission systems, apparatuses, and methods
26026661946Method of controlling optical signal power at an add/drop node in a WDM optical communication system
26036661944Optical add/drop multiplexer
26046658212Polarization-independent, configurable optical multiplexer
26056658211Optical signal repeater and output level control method used in this repeater
26066658210Interleaved bidirectional WDM channel plan
26076658172Optical system with 1.times.N interleaver and methods of making and using same
26086658017Communication network, and node device used therein and control method therefor
26096657952Ring network for sharing protection resource by working communication paths
26106657780Widely tunable and integrated optical system and method
26116657778Optical amplification repeater and optical amplification repeating and transmitting system
26126657770Programmable optical multiplexer/demultiplexer
26136657757High-throughput low-latency next generation internet network using optical label switching and high-speed optical header generation detection and reinsertion
26146654565System and method for increasing upstream communication efficiency in an optical network
26156654562Optical transmission system and optical transmission device
26166654379Integrated ring-mesh network
26176650809Multiple band optical multiplexer and demultiplexer
26186650529Inductor and method of manufacturing same
26196650449Method and device for network protection
26206647211REMOTE CONTROL DEVICE OF ACOUSTO-OPTIC TUNABLE FILTER AND OPTICAL TRANSMISSION SYSTEM CONTAINING EQUALIZER USING ACOUSTO-OPTIC TUNABLE FILTER AND OPTICAL TRANSMISSION SYSTEM CONTAINING OPTICAL ADD/DROP MULTIPLEXER USING ACOUSTO-OPTIC TUNABLE FILTER
26216647209Multiplexer and demultiplexer for single mode optical fiber communication links
26226646791Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied
26236643470FM signal converter, FM signal optical transmitter and FM signal optical receiver
26246643463Optical wavelength division multiplexing transmission network system using transmitting/receiving apparatuses having 2-input and 2-output optical path switching elements
26256643055Optical amplifier control
26266643042Optical communication network node
26276643041Optical network
26286640036Optical fiber and optical communication system using this optical fiber
26296640027Gain flattening tunable filter
26306639703Receiver transponder for protected networks
26316636660Monochrometer and wavelength division multiplexer comprising said monochrometer
26326636658Wavelength division multiplexing/demultiplexing systems
26336636654Programmable optical switching add/drop multiplexer
26346636651Four-port bidirectional optical circulator
26356636342Light source used in wavelength multiplexing
26366634809Method for optically transmitting signalling and control information in optical wavelength multiplex networks
26376634808Method for transmitting at least one first and one second data signal in polarization division multiplex in an optical transmission system
26386634807Optical transmission system including performance optimization
26396633696Resonant optical wave power control devices and methods
26406633695Compression-tuned grating-based optical add/drop multiplexer
26416633690Optical transmission apparatuses, methods, and systems
26426631245Device for extracting and inserting optical carriers in optical communications networks
26436631224Tunable filter with core mode blocker
26446631026Optical amplifier, excitation light source control method for use in optical amplifier, and optical amplifier control method
26456631019Reconfigurable multichannel transmitter for dense wavelength division multiplexing (DWDM) optical communication
26466631018WDM optical network with passive pass-through at each node
26476628871Fiber fuse protection
26486628850Dynamic wavelength-selective grating modulator
26496628440System for diverting an optical component signal from a multiplexed optical signal
26506626591Method of reducing intensity distortion induced by cross phase modulation in a WDM optical fiber transmission system
26516626590Optical communication network
26526625337Wavelength-division multiplex optical signal processor and a method of regenerating a wavelength-division multiplexed optical signal
2653662493950/100 and 50/200 GHz de-interleaver with high isolation and dispersion compensation
26546624918Voltage control of optical receiver bandwidth
26556624889Cascaded filter employing an AOTF and narrowband birefringent filters
26566624770Block coding system and method of data aggregation
26576623186Optical ethernet overlay for loop topology network
26586621958Athermalization and pressure desensitization of diffraction grating based WDM devices
26596621621Line amplification system for wavelength switched optical networks
26606621612Full spectrum optical communication system and methods thereof
26616619867Optical transmission system
26626619865Optical frequency division multiplexing network
26636618517Cascadable large optical cross-connect
26646618176Remodulating channel selectors for WDM optical communication systems
26656618129Technique for combined spectral, power, and polarization monitoring
26666616351Bidirectional optical amplifying apparatus and optical gain controlling method in a bidirectional WDM optical communication network
26676616350Method and apparatus for providing a more efficient use of the total bandwidth capacity in a synchronous optical network
26686616349Two-fiber interconnected ring architecture
26696616348Method and optical communication network for bidirectional protection protocols
26706614956Bidirectional WDM optical communication system with bidirectional optical service channels
26716614948Electrically switchable optical elements using wavelength locked feedback loops
26726614589Method and system for controlling amplifier power in an optical communications network
26736614586Methods and systems for high performance, wide bandwidth optical communication systems using Raman amplification
26746614583Variable optical delay
26756614573Switchable interleaved channel separator devices and systems
26766614568Wavelength-cyclic communication network and wavelength-cyclic modules
26776614567Apparatus and method for upgrading the capacity of wavelength division multiplexed optical networks
26786614510Multi-function optical system
26796611639Optical module for multi-channel wavelength multiplexing
26806611638High performance optical add/drop multiplexer and optical wavelength multiplexing network
26816609840Wave length associative addressing system for WDM type light packet steering
26826609839Device including a saturable absorber for regenerating a wavelength-division multiplex signal
26836608948Periodic arrayed waveguide grating multiplexer/demultiplexer
26846608719Comb wavelength division multiplexer
26856608709Bidirectional WDM optical communication system with bidirectional add-drop multiplexing
26866607312Method and device for broadcasting signals over a wavelength-division multiplexed network
26876606433Optical multi/demultiplexer
26886606351Ingress protection in a communication system with orthogonal carriers
26896606178Method and system to reduce FWM penalty in NRZ WDM systems
26906603902Wavelength selective variable reflector
26916603899Optical bus
26926603890Compensation for polarization-mode dispersion in multiple wavelength-division multiplexed channels without separate composition for each individual channel
26936603585Multiple-wavelength optical communication system with optical amplifiers
26946602000Reconfigurable add/drop for optical fiber communication systems
26956600849Control system for optical cross-connect switches
26966600846Single-etalon, multi-point wavelength calibration reference and fully integrated optical system using the same
26976600604Athermal thin film filter
26986600596Method and system for controlling amplifier power in an optical communications network having add/drop capability
26996600584Multiplex optical communication system
27006600583Optical internet router
27016600582Optical add/drop wavelength switch
27026597830Matrix optical switch and optical ADM
27036597482Multiplexing/demultiplexing apparatus for wavelength division multiplexed system and wavelength division multiplexed passive optical subscriber networks using the same apparatus
27046597480Wavelength tunable filter apparatus
27056594410Wide range tunable optical filter
27066594322Method of distributed loop control for a multicarrier telephony transport
27076594069Control method and control apparatus of optical wavelength variable filter
27086594048Technique to obtain channel plans for WDM systems with reduced four-wave mixing effect
27096594047Apparatus and method for providing optical channel overhead in optical transport networks
27106594046Level-flattening circuit for WDM optical signals
27116592272Burst mode transmission over multiple optical wavelengths
27126591038Optical interleaver and demultiplexing apparatus for wavelength division multiplexed optical communications
27136591035Method for dispersing light using multilayered structures
27146590684Optical system
27156590681Optical WDM network having an efficient use of wavelengths and a node therefor
27166588950Optical transmission system and transmitters and receivers
27176587616Tuneable optical filter
27186587608Reconfigurable, all optical add/drop nodes using non-interrupting switching apparatus and methods
27196587240Optical switching node and method for operating same
27206587239Optical fiber network having increased channel capacity
27216587237Metropolitan area network using low insertion loss optical add-drop multiplexers
27226584245High speed data link including a superconductive plate assembly for use in a data transmission scheme and method
27236583901Optical communications system with dynamic channel allocation
27246583900Optical transmission apparatus, optical transmission system, and optical terminal station
27256583898Optical transmission device and method for checking transmission in an optical transmission device
27266583737Device and method for compensating for propagation delay
27276580551Method for gain equalization, and device and system for use in carrying out the method
27286580550Filter with variable transmission character, optical transmission equipment and method of optical transmission
27296580539Method and apparatus for controlling the optical power of an optical transmission signal
27306580537High-throughput, low-latency next generation internet networks using optical label switching and high-speed optical header generation, detection and reinsertion
27316580536Power and wavelength management for mixed-rate optical data systems
27326580534Optical channel selector
27336580498Optical return loss detector for optical transmission systems
27346579018Four-fiber ring optical cross connect system using 4.times.4 switch matrices
27356578388Grating assisted coupler devices
27366577788Gain equalization system and method
27376577786Device and method for optical performance monitoring in an optical communications network
27386577732Hierarchical encryption technique for dense wavelength division multiplexed systems using a wavelength bus architecture
27396577652Optical add-drop multiplexer of WDM optical signals
27406577439Optical amplifier
27416577422Long reach delivery of broadcast services using broadband optical sources and pre-compensation dispersion
27426577417Heterodyne-wavelength division demultiplexing for optical pick-ups, microscopy, tomography telecommunication and lidar
27436577416Channel control in a wavelength division multiplexed communications network
27446577415Optical add-drop module with low loss and high isolation
27456577414Subcarrier modulation fiber-to-the-home/curb (FTTH/C) access system providing broadband communications
27466574413Arrangement and method for the channel-dependent attenuation of the levels of a plurality of optical data channels
27476574404Choromatic dispersion compensating module and optical transmission system using the same
27486574402Optical time-division multiplexing system
27496574392Wavelength router
27506574391Apparatus and method for wavelength selective switching
27516574192Communications network and an add and drop node
27526574018Network control system for optical communication networks
27536574017Wavelength division multiplex transmitter
27546574016Method and apparatus for ancillary data in a wavelength division multiplexed system
27556571031Device for multiplexing/demultiplexing and method therewith
27566570711Virtual waveplate and optical channel interleaver formed therewith
27576570703Optical amplifying apparatus, optical amplifying method, and optical communication system
27586570693Reverse path optical combining using an optical commutator
27596570686Reference wavelength providing device for performance monitor in WDM optical transmission system
27606570683Wavelength re-use
27616570652Athermalization and pressure desensitization of diffraction grating based spectrometer devices
27626567580Optical combiner system and method
27636567429Wide area multi-service broadband network
27646567207Optical transmission systems and optical amplifiers for use therein
27656567197Optical ring network architecture
27666567196Dense WDM optical multiplexer and demultiplexer
27676563980Method and device for spectral level balancing in wavelength division multiplex multi-channel systems
27686563846Multifunction optical transmitter for DWDM system
27696563630Optical amplifier apparatus
27706563617Optical apparatus using a 2D-spatial light modulator
27716563616Optical demultiplexer
27726563615Technique for detecting noise on a data channel
27736563614Optical transmission system and amplifier control apparatuses and methods
27746563613Optical subscriber network, and delay measurement method
27756560000Wavelength-dependent optical signal processing using an angle-to-offset module
27766559994Optical fiber transmitter for long distance subcarrier multiplexed lightwave systems
27776559992Adjustable chromatic dispersion compensation
27786559988Optical wavelength add/drop multiplexer for dual signal transmission rates
27796559986Method for converting the signal modulation of channels of an optical multiplex system to subcarrier frequencies
27806559985Method and system for determining channel power in an optical communications network
27816559984Apparatus for monitoring optical path based on the identification of optical cross-connect input ports
27826556743Optical signal add and drop apparatus
27836556341Optical transmission system having cascaded raman
27846556321WDM optical network and switching node with pilot tone communications
27856556319Split redundant trunk architecture using passive splitters and path switching
27866556297Athermalization and pressure desensitization of diffraction grating based spectrometer devices
27876552834Methods and apparatus for preventing deadbands in an optical communication system
27886552833Programmable optical add/drop multiplexer
27896552832Telecommunications system including transmultiplexer installed between digital switch and optical signal transmission fiber
27906549865Method of controlling a dynamic gain controller
27916549701Selectable wavelength channel filter for optical WDM systems
27926549314Optical control apparatus, optical junction apparatus, optical ADM apparatus and optical transmission apparatus having thereof
27936549312Method for designing optical filter cards
27946549018Method for measuring the individual crosstalk in wavelength-division multiplex systems and wavelength division multiplex system
27956548806Apparatus for monitoring frequency of WDM signals using pilot tone
27966546167Tunable grating optical device
27976546165Optical multiplexing/demultiplexing module
2798654616211/2.times.2 optical switch with a transmissive switching element
27996546160Transceiver for wavelength multiplexing processes
28006545826Thermally compensated wavelength division demultiplexer and multiplexer and method of fabrication thereof
28016545799Method and apparatus for optical system link control
28026545784Optical cross connect unit, optical add-drop multiplexer, light source unit, and adding unit
28036545783Optical wavelength add/drop multiplexer
28046545782Assymmetric wavelength slicing based dense wavelength division multiplexing
28056545781High-throughput, low-latency next generation internet networks using optical label switching and high-speed optical header generation, detection and reinsertion
28066545780Wavelength allocation method, a transmission equipment and receiving equipment using this method and a wavelength division multiplex transmission system
28076545779System for dealing with faults in an optical link
28086542660Method and system for increasing a number of information channels carried by optical waveguides
28096542291Optical amplifier excitation light source control method for use in optical amplifier and optical amplifier control method
28106542290Optical amplifier
28116542277Optically amplified back-up receiver
28126542275Dispersion compensating element having substantially uniform spectral nonlinearity
28136542268OPTICAL CHANNEL CROSS CONNECT FOR TELECOMMUNICATION SYSTEMS IN WDM TECHNOLOGY (WAVELENGTH DIVISION MULTIPLEXING) HAVING A DOUBLE SPATIAL SWITCHING STRUCTURE OF OPTICAL FLOWS STRICTLY NOT BLOCKING AND INTERPOSED FUNCTIONAL UNITS OPERATING ON SINGLE CHANNELS
28146539148Channel equalizer with acousto-optic variable attenuators
28156539145Module for multiplexing and/or demultiplexing optical signals
28166539109Imaging system
28176538803Optical amplifier and optical wavelength division multiplexing communication system
28186538783Optical systems including add drop devices and methods
28196538782Light branching/inserting apparatus and light branching apparatus using wavelength selection filter
28206538781Multimedia distribution system using fiber optic lines
28216538777Method for establishing connections by allocating links and channels
28226535715Hybrid/fiber coax video and telephony communication system with poly-phase filtering
28236535675Optical fiber having a chromatic dispersion slope that is shallow
28246535665Acousto-optic devices utilizing longitudinal acoustic waves
28256535335Optical polarization encoder
28266535313Dynamically assignable optical signal access control apparatus
28276535312Versatile optical switching for wavelength-division multiplexed system
28286535309Optical multiplexing/demultiplexing apparatus and optical multiplexing/demultiplexing method
28296532322Channel equalizer with acousto-optic variable attenuators
28306532320Equipments, transpondor and methods for optical fiber transmission
28316532103Optical fiber amplifier and optical transmission system using the same
28326532088System and method for packet level distributed routing in fiber optic rings
28336529656Bi-Directional add/drop multiplexer and bidirectional add/drop amplifier module for wavelength interleaved bidirectional networks
28346529305Optical transmission apparatuses, methods, and systems
28356529303Optical communications networks utilizing frequency division multiplexing
28366529302Channel switching in wavelength encoded optical communication systems
28376529300WDM optical network with passive pass-through at each node
28386529298Method of deactivating working fiber resources in optical ring networks
28396526192Fiber fuse protection
28406525871Optical amplification apparatus
28416525853Laser communication system and method of operation using multiple transmitters and multiple receivers with dispersive multiplexing in multimode fiber
28426525852Add and drop node for an optical WDM network having traffic only between adjacent nodes
28436525851High-throughput, low-latency next generation internet networks using optical label switching and high-speed optical header generation, detection and reinsertion
28446525850High-throughput, low-latency next generation internet networks using optical label switching and high-speed optical header generation, detection and reinsertion
28456525846Wavelength division multiplex/demultiplexing device
28466523177Cable television system with digital reverse path architecture
28476522803Optical cross-connect equipment
28486522796Depolarizing polarization mode combiner
28496522697Use of higher order modulation techniques to transmit large aggregate data rates on an optical link with relatively low speed electronics
28506522657Method of assigning time slots, as well as system, center, and subscriber facility for carrying out this method
28516522439Optical distortion compensation apparatuses, methods, and systems
28526522436Multiplexed transmission of optical signals
28536522435High-throughput, low-latency next generation internet networks using optical label switching and high-speed optical header generation, detection and reinsertion
28546519384Optical communication network
28556519064Scalable add/drop architecture for lightwave communication system
28566519061Traffic switching between different wavelength multiplexed channels in optical communications systems
28576519060Synchronous optical network in frequency domain
28586519059Wavelength division add/drop multiplexer
28596519058Multiwave optical buffer using loop mirror
28606516112Optical wavelength filter and demultiplexer
28616516110Optical cross-connector
28626515777Ring gain control in WDM optical signal transmission system
28636515776Optical device, terminal unit, and system for wavelength division multiplexing
28646512615Method and apparatus for wavelength multiplexing/demultiplexing
28656512613WDM transmission repeater, WDM transmission system and WDM transmission method
28666512611Method of deactivating protection fiber resources in optical ring networks
28676510261Acousto-optic variable attenuator with active cancellation of back reflections
28686509987Channel band conversion apparatus for optical transmission systems
28696509986WDM ring transmission system having amplified dropped channels
28706509985Parallel transmission method and system
28716509984Crosstalk reduction in a bidirectional optical link
28726507431Remotely pumping type multi-wavelength light transmission system
28736504638Optical amplifying transmission system and optical amplifier
28746504636Optical communication system
28756504632Optical transmitter and receiver module which demultiplexes a superimposed optical signal
28766504631System and method providing control channel for wavelength-division multiplexed network

2002

28776501877Wavelength router
28786501872Bragg grating assisted MMIMI-coupler for tunable add-drop multiplexing
28796501866Method and apparatus for cross-connecting optical transmission signals
28806501774Optical transmission apparatus for multiple wavelengths and optical transmission wavelength control method
28816501575Routing in a WDM system
28826501574Optical multiplex transmission apparatus and optical multiplex transmission method
28836498871Wavelength stabilized light source
28846498680Compact tunable optical wavelength interleaver
28856498665System for adding/dropping wavelength division multiplexed optical signals
28866498664Wavelength division multiplexing transmission device and method having waveform discriminating function, and wavelength division multiplexing transmission system
28876496300Optical amplifier
28886496297Device and method for modulating an optical signal
28896496289Optical exchanger
28906496288Wavelength multiplexing transmission apparatus and wavelength demultiplexing reception apparatus
28916493141Multi-functional optical device utilizing multiple polarization beam splitters and non-linear interferometers
28926493127Modulation systems using dual channel optical modulators
28936493125Apparatus for stabilizing light source frequency
28946493119Scalable DWDM network switch architecture with wavelength tunable sources
28956493118Add/drop capability for ultra-high speed dense wavelength division multiplexed systems using a wavelength bus architecture
28966493117WDM optical network with passive pass-through at each node
28976490393Integrated optical multiplexer and demultiplexer for wavelength division transmission of information
28986490377Optical interleaver
28996490067Multi-channel optical transceiver
29006490064Wavelength division multiplexing optical transmission system
29016487405Communication system with multicarrier telephony transport for controlling a plurality of service units
29026487335Distributed filter for DWDM cascade device using Mach-Zehnder interferometers
29036487334Optical switch
29046487329Non-blocking wavelength router architecture with wavelength reuse capability
29056486993Wavelength dispersion compensation apparatus in wavelength multiplex transmission system
29066486991Optical transmission system having an optical surge suppression function
29076486989Optical communications terminal station, optical signal transmission method, and optical signal increasing method in wavelength multiplexing system
29086486988Upgrading optical communications systems without traffic interruption
29096486986System for optically transmitting frequency-division-multiplexed signal and transmitter therefor
29106486984Wavelength monitor using hybrid approach
29116486950Multi-channel wavelength monitor
29126483637System and method for per-band optical amplification
29136483630OPTICAL AMPLIFIER, METHOD OF CONTROLLING THE OUTPUT LIGHT FROM THE OPTICAL AMPLIFIER, OPTICAL TRANSMISSION SYSTEM AND METHOD OF CONTROLLING AN OPTICAL TRANSMISSION PATH CROSS REFERENCE TO RELATED APPLICATION
29146483618Narrow band wavelength division demultiplexer and method of demultiplexing optical signals
29156480648Technique for detecting the status of WDM optical signals
29166477354Communication system transmitting modulated orthogonal carries with service units that scan spectrum to identify assigned band
29176477300Method, device, and system for waveform shaping of signal light
29186477291Method and system for in-band connectivity for optical switching applications
29196476946Channel add and drop method and system for wavelength-division multiplex optical transmission
29206476945Wavelength allocation in a ring
29216473540Device and method for filtering optical wavelengths
29226473234Tunable filter system with backreflection reference
29236469823Optical wavelength converter and optical wavelength division multiplexing communication system using the same
29246469814Apparatus and method for detecting channel information from WDM optical signal by using wavelength selective photo detector
29256469812Method and system for identifying undesired products of non-linear optical mixing
29266466348Trunk apparatus of a wavelength-division-multiplexing communication system for controlling a gain of an optical amplifier provided therein
29276466344Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer
29286466343System for assigning wavelengths in a wave division multiplexing based optical switch
29296466342Optical transmission system and method using an optical carrier drop/add transceiver
29306466341Add/drop filter for a multi-wavelength lightwave system
29316462877Drop filter apparatus and method
29326462847Method and apparatus for free-space optical communication without electro-optical conversion
29336462845Optical communication device
29346460182Optical communication system for transmitting RF signals downstream and bidirectional telephony signals which also include RF control signals upstream
29356459832Method and apparatus for optical signal transmission using multiple sub-signals of non-uniform bandwidth
29366459829Multiple wavelength excitation optical multiplexing device, multiple wavelength excitation light source incorporating aforementioned device, and optical amplifier
29376459527Optical amplifier apparatus and control method thereof, and optical transmission system using optical amplifier apparatus
29386459521Electroabsorption modulator integrated distributed feedback laser transmitter
29396459516Dense WDM add/drop multiplexer
29406459515Method and apparatus for transmitting a WDM optical signal having states of polarization that are pairwise orthogonal
29416456755Optical wavelength division multiplex system and method thereof
29426456754WDM transmitter and receiver
29436456750Optical transmission apparatuses, methods, and systems
29446456409Method and apparatus for extending fiber transmission distance with multiple pre-emphases in optically amplified DWDM system
29456456408Method and apparatus for controlling the optical power of a optical transmission signal
29466456406Transparent optical self-healing-ring communication network
29476455841Optical wavelength router based on polarization interferometer
29486453101Optical fiber useful for wavelength multiplexing transmission system
29496452945Electrical add-drop multiplexing for optical communications networks utilizing frequency division multiplexing
29506452931Synchronous optical network using a ring architecture
29516452719Optical communication system and optical amplifier
29526452718WDM-channel equalizer
29536452703Optical add-drop multiplexing technique and wavelength division multiplexing optical link using such a multiplexing technique
29546452701Wavelength division multiplexing communications network supervisory system
29556449403Wavelength selective optical filter
29566449085Optical direct amplifier and control method thereof
29576449073Optical communication system
29586449072Add/drop multiplexer
29596449070Optical transmission device and wavelength-multiplexed optical transmission system
29606449069Optical transmission equipment and method of transmitting an optical signal
29616449068Optical power managed network node for processing dense wavelength division multiplexed optical signals
29626445850Method and apparatus for per-band compensation with gap-free band structure for high speed DWDM transmission
29636445843Optical switching system with power balancing
29646445720Optical output level control device for an optical wavelength multiplexer included in an optical transmission system
29656445472Optical fiber subscriber network
29666445471Apparatus and method for making transmission characteristics uniform in a wavelength division multiplexing optical communications system
29676442694Fault isolation for communication networks for isolating the source of faults comprising attacks, failures, and other network propagating errors
29686442305Method for altering the refractive index of optical fibers using stress
29696441961Folded optical interleaver with optional routing capability
29706441960Optical interleavers with minimized dispersion
29716441934Multiplexer and demultiplexer for single mode optical fiber communication links
29726441933Signal monitoring apparatus for wavelength division multiplexed optical telecommunications networks
29736438286Protection switching in bidirectional WDM optical communication networks with transponders
29746437929Piezo-actuator based optical add/drop module
29756437888Device for adding and dropping optical signals
29766433904Method and apparatus for improving transmission performance over wavelength division multiplexed optical communication links using forward error correction coding
29776433903Optical management channel for wavelength division multiplexed systems
29786433864Apparatus for monitoring optical signal-to-noise ratio of optical signals in WDM optical transmission system
29796430715Protocol and bit rate independent test system
29806430336Device and method for minimizing optical channel drift
29816430201Method and apparatus for transporting gigabit ethernet and fiber channel signals in wavelength-division multiplexed systems
29826429974Add-drop multiplexer
29836426832Wavelength-multiplexed light amplifying apparatus, optical amplifier and optical add-and-drop apparatus using wavelength-multiplexed light amplifying basic unit
29846426830Single lens turnable wavelength division multiplexing fabry-perot filter using MEMS technology
29856426821Optical upconverter apparatuses, methods and systems
29866426818Optical interconnect for high speed processor
29876426817Optical wavelength multiplexing system and terminal
29886426816Wide transmission optical comb filter with wide pass band and wide stop band
29896426815WDM ring transmission system having two hubs
29906424440Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer
29916424439Wavelength division multiplexed channel tagging
29926421479Apparatus and method facilitating optical alignment of a bulk optical multiplexer/demultiplexer
29936421177Interleaving optical filter
29946421152Optical buffer utilizing a cell pointer
29956418558Hybrid fiber/coax video and telephony communication
29966417958WDM optical communication system using co-propagating Raman amplification
29976417945Optical wavelength multiplex transmission method and optical dispersion compensation method
29986417943Low-latency high-bandwidth TDM-WDM network area network architecture
29996417942Optical communication system and method of controlling optical communication system
30006415133Acquisition and tracking in communication system with multicarrier telephony transport
30016415074Devices and methods for optical communication systems
30026415067N x M optical switch
30036414770Optical communications system
30046414769Bidirectional multichannel optical telecommunication system
30056414767Meshed optical network
30066414765Protection switch in a two-fiber optical channel shared protection ring
30076411424Integrated laser array devices
30086411418High-performance parallel processors based on star-coupled wavelength division multiplexing optical interconnects
30096411414Wavelength division multiplexing wireless optical link
30106411412WDM optical communication network with data bridging plural optical channels between optical waveguides
30116411411Optical wavelength selective control apparatus
30126411410Wavelength-division multiplexing in passive optical networks
30136411409Compact diffraction grating based WDM demux
30146411408Apparatus and method for high repetition rate optical communication over long unrepeated spans
30156407846Photonic wavelength shifting method
30166407843System and method for spectrally efficient transmission of digital data over optical fiber
30176407842Method and apparatus for transmitting a WDM optical signal having nonuniform channel spacings
30186407839Optical and programmable fiber optic wavelength add/drop system
30196407838Reconfigurable multi-add/drop module for optical communications
30206407837Use of bandwidth efficient modulation techniques in a wavelength division multiplexed optical link
30216407834Optical wave network system and method of monitoring a network trouble
30226404948Dense WDM optical multiplexer and demultiplexer
30236404525Optical add-drop multiplexer
30246404523Wavelength division multiplexing system and its termination
30256404522Optical communication method and system using wavelength division multiplexing
30266404521Filters to adjust DWDM transmissivity
30276400864Broad band semiconductor optical amplifier module having optical amplifiers for amplifying demutiplexed signals of different wavelengths and optical communication system using it
30286400861Optical demultiplexer architecture
30296400859Optical ring protection having matched nodes and alternate secondary path
30306400705Method to determine an access frequency band, a head-end and a first terminal realizing such a method and a communication access network including such a head-end and such a terminal
30316400498Optical signal repeating and amplifying device and optical level adjusting device
30326400496Optically amplified WDM transmission system
30336400479Optical power balancer for optical amplified WDM networks
30346400478Wavelength-division-multiplexed optical transmission system with expanded bidirectional transmission capacity over a single fiber
30356400475Optical transmission system and optical communications device
30366400300D/A converter street effect compensation
30376396629Multi-functional optical device utilizing multiple birefringent plates and a non-linear interferometer
30386396609Dispersion compensation for optical systems
30396396603Monitoring the stability of the wavelength of a light signal in an optical communications system employing wavelength division multiplexing and having a wavelength stabilization circuit
30406393176Dense wavelength division multiplexer which includes a dense optical channel comb filter
30416392991Communication network, node apparatus used in the network, and their control method
30426392770Multi-point optical transmission system
30436389188Hybrid wavelength selective optical router and switch
30446388806Upgradable, gain flattened fiber amplifiers for WDM applications
30456388783Narrow band wavelength division multiplexer and method of multiplexing optical signals
30466388782Multi-wavelength dense wavelength division multiplexed optical switching systems
30476388781Apparatus for time division/wave division conversion
30486385366Fiber to the home office (FTTHO) architecture employing multiple wavelength bands as an overlay in an existing hybrid fiber coax (HFC) transmission system
30496385206Communication network and method, and node and exchange node used therein
30506385165Add-drop multiplexer of duplicated configuration having increased transport capacity
30516384943Optical wavelength multiplex transmission method and optical dispersion compensation method
30526381384Flexible WDM network architecture
30536381248Network architecture uses mini-fiber node and mini-coaxial node technologies to provide bi-directional broadband communications
30546381064Method for gain equalization, and device and system for use in carrying out the method
30556381048Wavelength division multiplexed system having reduced cross-phase modulation
30566381047Passive optical network using a fabry-perot laser as a multiwavelength source
30576381046Routing method for ring networks, such as WDM ring networks for optical communication
30586377725Optical wavelength division multiplexed interconnect system providing autonomous information selection and prioritization
30596377395Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied
30606377392Optical amplifier
30616377390Optical gain equalizer, and optical amplifier and wavelength-division multiplex transmitter both comprising the optical gain equalizer
30626377375Optical wavelength division multiplexed signal amplifying repeater and optical communication transmission line with very large capacity
30636377374Method apparatus and computer program product for optical network restoration
30646377372Circuit for optical WDM apparatus
30656374307Non-intrusive DWDM billing system
30666373622Optical amplification apparatus
30676373609Wavelength tailored dispersion compensation apparatus
30686373608Method and device for on-line regeneration of a signal transmitted by wavelength division multiplexed solitons and optical telecommunication system comprising such a regenerating device
30696373605Optical interconnect for high speed processor
30706373604Optical MUX/DEMUX
30716369925Beam combiner
30726369923Multiwavelength stabilization with a single reference comb filter in DWDM systems
30736366585Distributed control in a communication system
30746366379REMOTE CONTROL DEVICE OF ACOUSTO-OPTIC TUNABLE FILTER AND OPTICAL TRANSMISSION SYSTEM CONTAINING EQUALIZER USING ACOUSTO-OPTIC TUNABLE FILTER AND OPTICAL TRANSMISSION SYSTEM CONTAINING OPTICAL ADD/DROP MULTIPLEXER USING ACOUSTO-OPTIC TUNABLE FILTER
30756366378Optical multiplexing and demultiplexing
30766366376Optical transmitting device using wavelength division multiplexing to transmit signal lights having frequencies arranged to eliminate effects of four-wave mixing (FWM)
30776366373Method of intrinsic continuous management data transmission in fiber optic communications
30786363202Management and control of the power levels of wavelength multiplexed optical signals
30796363181Method and apparatus for wavelength-division multiplexing
30806362903Use of higher order modulation techniques to transmit information on passbands of a dispersion-limited fiber link
30816362759Control circuit, and system using same
30826360042Tunable optical fiber gratings device
30836359907Method to provide information concerning a frequency band, a head-end and a terminal realizing such a method and a communication access network including such a head-end and such a terminal
30846359730Amplification of an optical WDM signal
30856357913Add/drop acousto-optic filter
30866356692Optical module, transmitter, receiver, optical switch, optical communication unit, add-and-drop multiplexing unit, and method for manufacturing the optical module
30876356386Method and apparatus for stabilizing transient control in amplified optical networks
30886356368Optical supervisory transmission signal control device
30896351581Optical add-drop multiplexer having an interferometer structure
30906351323Optical transmission apparatus, optical transmission system, and optical terminal station
30916349158Hybrid cascade structure for DWDM
30926348987Multiplex optical communication system
30936348985Bidirectional WDM optical communication network with data bridging plural optical channels between bidirectional optical waveguides
30946348984Optical add/drop multiplexer
30956347169Apparatus and method for monitoring optical signal
30966345137Wavelength division multiplex optical star coupler, communication station, and optical transmission system
30976345136Tuneable add/drop multiplexer
30986344914Gain equalizer which includes a plurality of optical filters for equalizing the gain of an optical amplifier
30996344912Hybrid and scalable opto-electronic processing in a wavelength-division multiplexed system
31006343169Ultra-dense wavelength division multiplexing/demultiplexing device
31016343165Optical add drop multiplexer
31026342968Frequency tuning of optical devices
31036342961Method and apparatus for improving spectral efficiency in wavelength division multiplexed transmission systems
31046342959Transient suppression in an optical wavelength division multiplexed network
31056342958Wavelength division multiplexed transmission system and transmitting method using the same
31066341024Channel monitoring apparatus in a wavelength division multiplexing system
31076341023Multiple level modulation in a wavelength-division multiplexing (WDM) systems
31086341021Dynamic power equalization of many wavelength-division-multiplexed channels in a fiber-optic system
31096339663Bidirectional WDM optical communication system with bidirectional optical service channels
31106339495Optical amplifier with power dependent feedback
31116339488Large scale communications network having a fully meshed optical core transport network
31126339487Bi-directional optical transmission system
31136337933Narrow bandwidth fiber bragg grating apparatus
31146337753Optical power equalizer
31156336201Synchronization in a communications system with multicarrier telephony transport
31166335810Optical ADM apparatus and an ADM optical transmission system including the optical ADM apparatus

2001

31176334219Channel selection for a hybrid fiber coax network
31186333807Optical filter
31196333805Optical output control circuit
31206333800Optical communication system using wavelength-division multiplexed light
31216333799Hybrid wavelength-interchanging cross-connect
31226333798Bidirectional WDM optical communication network
31236332050Optical slab waveguide for massive, high-speed interconnects
31246331907Multi-wavelength light source and discrete-wavelength-variable light source
31256331906Method and apparatus for operation, protection and restoration of heterogeneous optical communication networks
31266330381Methods, systems, media and signals for determining optimum pre-compensation and optimization of an optical system
31276330241Multi-point to point communication system with remote unit burst identification
31286327075Optical gain equalization unit, optical gain equalization method, and optical fiber transmission line
31296327061Optical fiber transmission system for soliton signals with wavelength multiplexing and saturable absorbers
31306327060Optical transmission system, optically branching apparatus and optical signal processing apparatus
31316324318Redundant optical source switching method and wavelength division multiplexing transmission apparatus using the same
31326323994WDM system equalization with EDFA optical amplifiers
31336323975Optical add/drop device
31346320996Wavelength selective optical switch
31356320684WDM optical transmission system
31366317539Interleaved sampled and chirped optical waveguide gratings for WDM channel operations and resulting devices
31376317429Communication apparatus, network system using communication apparatus and control method used in network system
31386317252Dynamic channel copying device for use in fiber optics system using a nonlinear optical media
31396317243Optical upconverter apparatuses, methods and systems
31406313933Bidirectional wavelength division multiplex transmission apparatus
31416313932Multiplexed transmission of optical signals
31426310994Add/drop multiplexer routing signals according to wavelength
31436310718Optical amplifying apparatus for detecting break point in optical transmission lines
31446310708Supervisory signal transmitter and method
31456310703Method and apparatus for optical performance monitoring in wavelength division multiplexed fiber optical systems
31466307986Protection switching in bidirectional WDM optical communication networks with transponders
31476307984Optical fiber communication system using optical phase conjugation as well as apparatus applicable to the system and method of producing the same
31486307679Formation of a refractive index grating
31496307658Method and apparatus for decompressing pulses making up a binary optical signal
31506307657Optomechanical platform
31516307656Bi-directional wavelength switching device and wavelength demultiplexing/multiplexing device
31526307654Optical node system for a ring architecture and method thereof
31536304691Wavelength division multiplexed optical communication system having reduced short wavelength loss
31546304370Two-stage modular wide-band optical amplifiers
31556304351Universal branching unit
31566304350Temperature compensated multi-channel, wavelength-division-multiplexed passive optical network
31576304348Optical communication method and optical communication system based on optical phase conjugation
31586304347Optical power management in an optical network
31596304346Fault restoration control method and it's apparatus in a communication network
31606301033Optical transmission equipment and optical networks
31616301032Optical multiplexing/demultiplexing device
31626301031Method and apparatus for wavelength-channel tracking and alignment within an optical communications system
31636298186Planar waveguide grating device and method having a passband with a flat-top and sharp-transitions
31646298038Transparent transport
31656297896Optical switch and optical communication system using the same
31666297895Wavelength division multiplexing system, wavelength division multiplexing transmission system and optical path cross connection system
31676295150Wavelength division multiplexing device
31686295149System and method of telecommunication with wavelength division multiplexing comprising a demultiplexer
31696295148Optical network for transmitting two-way multicast signals
31706295147Wavelength multiplexing transmission apparatus and wavelength demultiplexing reception apparatus
31716292651Communication system with multicarrier transport distribution network between a head end terminal and remote units
31726292605Reconfigurable optical filtering apparatus and a drop-and-insert multiplexer incorporating such apparatus
31736292602Optical signal transmission system and optical signal transmission device using the same
31746292598Optical transmission apparatuses, methods, and systems
31756289699Wavelength selective optical couplers
31766289148Free-space micro-mirror wavelength add/drop multiplexers with full connectivity for two-fiber ring networks
31776288812Bidirectional WDM optical communication network with optical bridge between bidirectional optical waveguides
31786288811WDM optical communication system with channels supporting multiple data formats
31796288810Device for adding and dropping optical signals
31806288808Large capacity optical ATM switch
31816288807Optical wavelength router
31826285500Wavelength selective switch
31836285479Optical cross connect unit, optical add-drop multiplexer, light source unit, and adding unit
31846285478Programmable optical add/drop device
31856285477Multi-wavelength light source and discrete-wavelength-variable light source
31866282683Communication system with multicarrier telephony transport
31876282340Light wavelength tuning device and light source optical demultiplexer and wavelength division multiplexed optical communication system using the tuning device
31886282017Optical communication system and optical amplifier
31896282005Optical surface plasmon-wave communications systems
31906281998Signal routing for fiber optic networks
31916281997Dense WDM optical multiplexer and demultiplexer
31926281995Use of cross tap equalization to reduce crosstalk arising from inadequate optical filtering in a wavelength division multiplexed optical link
31936279158Dynamic bandwidth allocation
31946278549Optical filter having a quartz substrate
31956278536Optical transmission device for bi-directional optical communication
31966278535SONET Jo byte message monitoring system
31976275990Transport of payload information and control messages on multiple orthogonal carriers spread throughout substantially all of a frequency bandwith
31986275623Dynamically configurable spectral filter
31996275331Optical amplifiers
32006275322Michelson phase shifter interleaver/deinterleavers
32016275314Optical wavelength multiplex transmission method and optical dispersion compensation method
32026272154Reconfigurable multiwavelength network elements
32036271962System of controlling wavelength division multiplexed optical amplifier and method thereof
32046271949Optical communication system using wavelength-division multiplexed light
32056271948Wavelength division multiplexed optical communication system
32066271947Simultaneous wavelength-division multiplexing and broadcast transmission system
32076271946Optical layer survivability and security system using optical label switching and high-speed optical header generation and detection
32086271945Apparatus and method for controlling power levels of individual signal lights of a wavelength division multiplexed signal light
32096271944Laser wavelength control in an optical communication system
32106269204Method and system for monitoring of optical transmission lines
32116269106Method to provide information concerning a frequency band, a head-end, a network terminator and a terminal realizing such a method and a communication access network including such a head-end, such a network terminator and such a terminal
32126268951Optical signal interleaver/deinterleavers
32136268945Stable power control for optical transmission systems
32146268943Optical SNR measurer in WDM optical transmitting device
32156266460Large-channel-count programmable wavelength add-drop
32166266169Optical transmission equipment which transmits an amplified optical data signal and an optical surveillance signal
32176263138Optical fiber for compensating chromatic dispersion of a positive chromatic dispersion optical fiber
32186263130Wideband optical service channel for wave division networks
32196263127Free-space/arrayed-waveguide router
32206262822Circuit for monitoring optical signals
32216262821Optical spectral multiplexer for inserting and extracting
32226259836Optical frequency shifter and transmission system
32236259556Optical fibre amplifier having a controlled gain
32246259555Multi-band amplification system for dense wavelength division multiplexing
32256259553Optical communication system and optical amplifier
32266256433Expandable interleaving optical add/drop filter module
32276256431WDM multiplexer
32286256428Cascading of tunable optical filter elements
32296256427Process for creating several data circuits on an optical fiber and device for embodiment of the process
32306256141Optical amplification apparatus
32316256127Modulation format adjusting optical transponders
32326256126NB-WDM system and method for establishing wavelength number information of same
32336256125WDM optical transmission system
32346256124Combination photonic time and wavelength division multiplexer
32356252719Beam splitter/combiner module
32366252711Polarization diversity for birefingent filters
32376252688Optical wavelength multiplex transmission method and optical dispersion compensation method
32386252687Optical wavelength multiplex transmission method and optical dispersion compensation method
32396249620Reconfigurable branching unit for a submarine communications system
32406249510Signal protection system for bi-direction ring network
32416243512Optical 2-fiber ring network
32426243200Optical wavelength router based on polarization interferometer
32436243180Optical interconnect for high speed processors
32446243179Banded add drop device
32456243177Bidirectional WDM optical communication system with bidirectional add-drop multiplexing
32466243176Optical wavelength multiplex transmission method and optical dispersion compensation method
32476243175WDM optical communication system having reduced loss and cross-talk
32486240222Wavelength specific operations in optical systems
32496239889Optical signal power detection with signature bit pattern in WDM systems
32506239888Terrestrial optical communication network of integrated fiber and free-space links which requires no electro-optical conversion between links
32516236782Grating assisted coupler devices
32526236500Optical amplifier
32536236499Highly scalable modular optical amplifier based subsystem
32546236498Upgradable, gain flattened fiber amplifiers for WDM applications
32556236482WDM optical communication system
32566236481Method and apparatus for providing loss equalization and adjustment in a fiber optic network
32576236480System and method for reducing Raman cross-talk in a DWDM transport system
32586233078Photo signal amplification transmission system
32596233077Remodulating channel selectors for WDM optical communication systems
32606233076Optical communications system
32616233075Optical layer survivability and security system
32626233074Ring networks utilizing wave division multiplexing
32636229937Circularly polarized fiber in optical circuits
32646229935Dispersion slope compensation in optical transmission systems
32656229641Optical amplifier, method of controlling the output light from the optical amplifier, optical transmission system and method of controlling an optical transmission path cross reference to related application
32666226425Flexible optical multiplexer
32676226111Inter-ring cross-connect for survivable multi-wavelength optical communication networks
32686222962Optical amplifier
32696222655Wavelength division multiplex optical amplification transmission system and optical amplifier
32706222654Optical node system for a ring architecture and method thereof
32716222653Optical communication node and wavelength division multiplexing optical transmission device having ring structure comprising the optical communication nodes
32726219176Method for gain equalization, and device and system for use in carrying out the method
32736219163Multi-wavelength light source and discrete-wavelength-variable light source
32746219162Methods for equalizing WDM systems
32756219161Optical layer survivability and security system
32766215926Fiber optic dense wavelength division multiplexer with a phase differential method of wavelengths separation utilizing glass blocks and a nonlinear interferometer
32776215763Multi-phase process for distributed precomputation of network signal paths
32786215572Wavelength division multiplexing optical transmission apparatus
32796215568WDM switching network
32806215567Optical transmitting apparatus and optical receiving apparatus, and optical communicating method
32816215566Multi-wavelength light source and discrete-wavelength-variable light source
32826212315Channel power equalizer for a wavelength division multiplexed system
32836212312Optical multiplexer/demultiplexer using resonant grating filters
32846212001Method and system for controlling optical amplification in wavelength division multiplex optical transmission
32856211981Optical wavelength multiplex transmission system using repeaters
32866211980Bi-directional wavelength switching device and wavelength demultiplexing/multiplexing device
32876211978Multi-channel wave division multiplexer system
32886208780System and method for optical monitoring
32896208444Apparatus for wavelength demultiplexing using a multi-cavity etalon
32906208443Dynamic optical add-drop multiplexers and wavelength-routing networks with improved survivability and minimized spectral filtering
32916208442Programmable optical multiplexer
32926208441Optical add/drop wavelength division multiplex systems
32936208440Optical wavelength filter and optical demultiplexer
32946205270Dense wavelength division multiplexer which includes a dense optical channel comb filter
32956205117Distributed precomputation of network signal paths with table-based link capacity control
32966204970Method of spectrally tuning a filter
32976204946Reconfigurable wavelength division multiplex add/drop device using micromirrors
32986204945Signal light outputting apparatus and optical transmission system having signal light outputting apparatus
32996204944All-optical time-division demultiplexing circuit and all-optical TDM-WDM conversion circuit
33006204943Reconfigurable ring transmission network with multiplexing in wave length for semi-permanent links
33016201909Wavelength selective optical routers
33026198857Add/drop optical multiplexing device
33036198721Method and system for data transmission in a ring network
33046198556WDM ring transmission system
33056195367Architectural arrangement for bandwidth management in large central offices
33066195188Optical wavelength conversion apparatus and method
33076192252Establishing a wireless link connecting a central terminal and a subscriber terminal of a wireless telecommunications system
33086192173Flexible WDM network architecture
33096191877WDM optical fiber system using Raman amplification
33106188816Filter topologies for optical add-drop multiplexers
33116188810Reversible ring coupler for optical networks
33126188509Simple bidirectional add/drop amplifier module based on a single multiplexer
33136185023Optical add-drop multiplexers compatible with very dense WDM optical communication systems
33146185022Optical transmission system and transmitting terminal station
33156181451Filter Selector
33166181449Wavelength division multiplexed optical processing device and optical communication transmission path
33176178021System for compensating polarization dispersion of channels in a wavelength-division multiplex signal
33186173093Optical add/drop wavelength division multiplex systems
33196172782Output port switching device in N-WDM system
33206172781Wave division multiplexed optical network
33216169626Optical signal interleaver
33226169616Optical and programmable fiber optic wavelength add/drop system
33236169615Wavelength division multiplex optical transmission apparatus

2000

33246167171Cascading optical multiplexing device
33256166838Optical add/drop wavelength switch
33266163527Method and apparatus for an optical bi-directional line switched ring data communications system
33276163393Method and apparatus for wavelength multipexing/demultiplexing
33286163392Distributed intelligence wavelength division multiplexed network
33296160931Wavelength-multiplexing optical transmission system provided with wavelength selectors
33306160819Method and apparatus for multiplexing bytes over parallel communications links using data slices
33316160652Optical address decoder
33326160651Optical layer survivability and security system using optical label switching and high-speed optical header reinsertion
33336157481Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of the channels are varied
33346157475Optical channel regulator and method
3335615458511/2.times.2 optical switch
33366154471Magnetically tunable and latchable broad-range semiconductor laser
33376151304Distributed precomputation of network signal paths with improved performance through parallelization
33386151159Optical amplifier for wavelength multiplex transmission
33396151147Optical communication apparatus
33406151144Wavelength division multiplexing for unbundling downstream fiber-to-the-home
33416148124Wavelength division multiplexed optical networks
33426147786Hybrid analog/digital WDM access network with mini-digital optical node
33436147785Coherent crosstalk attenuation apparatus
33446147784Simultaneous wavelength-division multiplexing and broadcast transmission system
33456144784Optical input/output module and light-reflecting device
33466144487Optical amplifying apparatus capable of detecting at least one of optical individual signals
33476144485Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied
33486144474Optical transmission system including optical repeaters with selectively enabled gain equalizers contained therein and including an add/drop apparatus with a plurality of individually selectable filters
33496141470Magnetically reconfigurable optical grating devices and communication systems
33506141127High capacity chirped-pulse wavelength-division multiplexed communication method and apparatus
33516137607Broadband communications method and apparatus for reducing optical beat interference
33526137606Optical wavelength router
33536137605Output power control system for optical amplification repeater
33546137604Chromatic dispersion compensation in wavelength division multiplexed optical transmission systems
33556134250Wavelength-selectable fiber ring laser
33566134036Add/drop multiplexer node
33576134034Apparatus and method for controlling power levels of individual signal lights of a wavelength division multiplexed signal light
33586134033Method and apparatus for improving spectral efficiency in wavelength division multiplexed transmission systems
33596130765Drop/insert apparatus for dropping/inserting channels on a bidirectional multi-channel optical link
33606130764Transmission apparatus in ring network
33616128114Method of and system for transmitting data
33626125104Network node for switching quality detector to incoming signal specified by request message from adjacent node
33636124959Optical wavelength-division multiplexing transmission system
33646124957Optical signal translator unit
33656122096Expandable wavelength-selective and loss-less optical add/drop system
33666122095Wavelength-selective and loss-less optical add/drop multiplexer
33676118566Optical upconverter apparatuses, methods, and systems
33686118563Methods and apparatus for reducing four-wave mixing
33696118561Wavelength division multiplexing optical transmitter and wavelength division multiplexing-demultiplexing optical transmission-reception system
33706118479Optical transmission method, error rate evaluation method applied in optical transmission and apparatus for generating a signal for error rate evaluation
33716115517Optical communication network apparatus and optical switching network
33726115516Wavelength division multiplex branching unit and method of operation for optical transmission systems
33736115158Optical communication system and optical transmitting device applied thereto
33746115157Methods for equalizing WDM systems
33756115156Demultiplexer device for wavelength-division multiplexed optical fiber communication
33766115155System for dealing with faults in an optical link
33776111675System and method for bi-directional transmission of telemetry service signals using a single fiber
33786111673High-throughput, low-latency next generation internet networks using optical tag switching
33796111672Method, apparatus, and computer program product for optical network restoration
33806108468Optical branching device and method of optical transmission
33816108339Synchronous optical network using a ring architecture
33826108311Multichannel ring and star networks with limited channel conversion
33836108123Optical communication system and optical amplifier
33846104848WDM optical transmitter
33856101016Optical transmission systems using optical amplifiers and wavelength division multiplexing
33866101014Wavelength controlling method enabling use of wider wavelength range and network system using the method
33876101012Optical add/drop multiplexer/demultiplexer
33886101011Modulation format adjusting optical transponders
33896097736Telecommunications network
33906097533Optical amplifier for CATV system with forward and reverse paths
33916097519Fiber optic network using space and wavelength multiplexed data channel arrays
33926097518N x M optical wavelength routing switch
33936097516Optical add drop multiplex (OADM)
33946094442Optical path signal termination equipment
33956094296Optical amplification apparatus
33966094284Optical systems with grating reflector
33976091869Low loss, optical add/drop WDM node
33986091539Optical amplifier apparatus and control method thereof, and optical transmission system using optical amplifier apparatus
33996091538Gain equalizing apparatus
34006091525Spectral monitoring device and method using data correlation for WDM systems
34016088371Up-grading method for transmission apparatus
34026088141Self-healing network
34036084992Arrangement and method relating to optical transmission
34046084694WDM optical network with passive pass-through at each node
34056081361Sub-carrier multiplexing in broadband optical networks
34066081359Transmitting apparatus and receiving apparatus for wavelength-division-multiplex signal transmission
34076081357Optical communication network system with wavelength-based signal distribution
34086081355Multi-wavelength light source
34096078709Method and apparatus for monitoring multi-wavelength optical systems
34106078415Network system for communication with plural channels, node device and concentrator for use therein, and communication method for said network system
34116078413Optical branching/multiplexing apparatus
34126078412Optical transmitter and optical transmission system using the same
34136075631Hitless reconfiguration of a wavelength division multiplexed optical communication network
34146075630Electro/optical combined type network node control system
34156075629Optical protection switch employing an interference filter
34166073248Distributed precomputation of signal paths in an optical network
34176072612WDM transmitter for optical networks using a loop-back spectrally sliced light emitting device
34186072601Optical fiber amplifier and an optical communication system using same
34196069987Optical device for an optical network unit and manufacturing method therefor
34206069731Constant passband variable gain optical amplifier and system for automatically compensating variations in losses on an optical link including an amplifier of this kind
34216069719Dynamically reconfigurable optical add-drop multiplexers for WDM optical communication systems
34226069718Distortion penalty measurement procedure in optical systems using noise loading
34236067187Optical amplifier and optical communication system employing the same
34246067181Laser locking and self filtering device
34256067179Optical transmission systems using optical amplifiers and wavelength division multiplexing
34266067178Multiple wavelength division multiplexer with reduced loss
34276067177Method for sub-carrier multiplexed optical signal transmission and apparatus for same
34286064513Optical transmission system
34296061485Method for wavelength division multiplexing utilizing donut mode vertical cavity surface emitting lasers
34306061484Add/drop multiplexer
34316061482Channel layered optical cross-connect restoration system
34326061173Wavelength-division-multiplexing optical amplifier
34336061157Optical wavelength multiplexing and demultiplexing device and an optical transmission system using the same
34346058227Method and apparatus for an opto-electronic circuit switch
34356055094Optical amplifying apparatus
34366055092Multi-wavelength light amplifier
34376055078Real time wavelength monitoring circuit
34386055077Multimedia distribution system using fiber optic lines
34396052499Optical demultiplexer filter system to eliminate cross-talk side-lobes
34406049405Optical node in an optical bus network
34416046833Method and apparatus for operation, protection, and restoration of heterogeneous optical communication networks
34426046813Wavelength detecting device
34436044076Network system for transmitting a plurality of channels, and node device, packet transmission method, terminal equipment connection table generation method, and connection information registration method used in the system
34446043931Optical transmission system with dynamic compensation of the power transmitted
34456043915Stabilization of a multi-channel optical signal transmitter through correlation feedback
34466043914Dense WDM in the 1310 nm band
34476041152Multi-channel fiber optic communications system and multiplexer/demultiplexer arrangement therefor
34486040933Method and apparatus for channel equalization in wavelength division multiplexed systems
34496040932Method and circuit for demultiplexing an optical signal
34506040931Optical transmitter, terminal-station apparatus having the optical transmitter, and optical communication system
34516038357PDM-WDM for fiberoptic communication networks
34526038062Optical amplifier, method of controlling the output light from the optical amplifier, optical transmission system and method of controlling an optical transmission path
34536038046Branching system with optical add drop multiplexing function
34546038045Apparatus for adding and dropping wavelength multiplex channels
34556035080Reconfigurable add-drop multiplexer for optical communications systems
34566034799Tuning source for lightwave systems
34576034798Optical network and arrangement and method in such network
34586032185Bus network with a control station utilizing tokens to control the transmission of information between network stations
34596031647Stable power control for optical transmission systems
34606031645Bi-directional optical communications subscriber transmission system using a single wavelength
34616028685Interleaved broadcast techniques for wavelength division multiplexed systems
34626026204Matching apparatus for an optical communications network
34636025954Amplified telecommunication system for wavelength-division multiplexing transmissions, having an equalized reception power
34646025947Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied
34656025944Wavelength division multiplexing/code division multiple access hybrid
34666025943Arrangement for the implementation of an add/drop method in wavelength-division multiplex transmission of optical signals
34676025941Stable wavelength division multiplex ring network
34686023542Integrable fiberoptic coupler and resulting devices and system
34696023452Network failure restoration method with different recovery performances for different signal groups
34706023366Optical communication system and optical amplifier
34716023361Fiber optic network using space and wavelength multiplexed data channel arrays
34726023360Multiple-channel all-optical TDM-WDM converter and multiple-channel all-optical TDM demultiplexer
34736023359Optical wavelength-division multiplex transmission equipment with a ring structure
34746021233WDM ring transmission system having reduced adjacent channel cross-talk
34756021113Distributed precomputation of network signal paths with table-based link capacity control
34766020986Programmable add-drop module for use in an optical circuit
34776018405Optical transmission equipment which transmits an amplified optical data signal and an optical surveillance signal
34786016373Apparatus and method for configuring a fiber optical assembly
34796016212Optical receiver and demultiplexer for free-space wavelength division multiplexing communications systems
34806014480Optical energy selector apparatus and method
34816014248Wavelength division multiplexed optical signal amplifier
34826014237Multiwavelength mode-locked dense wavelength division multiplexed optical communication systems
34836011638Dispersion tapered optical fibers for use in WDM soliton transmission systems

1999

34846008919Optical receiving apparatus
34856008918Optical interconnect for high speed processor
34866005995Frequency sorter, and frequency locker for monitoring frequency shift of radiation source
34876005862Node device used in network system for performing packet communications, network system using the same, and communication method used in the system
34886005702Optical transmission device, WDM optical transmission apparatus, and optical transmission system using return-to-zero optical pulses
34896005699Optical wavelength multiplexing system
34906005697Multi-wavelength cross-connect optical network
34916002820Optical branching and insertion apparatus
34926002513Optical modulator providing independent control of attenuation and spectral tilt
34936002504Device for the frequency transposition of optical signals
34946002503Optical add/drop multiplexer
34955999291Centralized wavelength distribution for wavelength division multiplexed systems
34965999288Connection set-up and path assignment in wavelength division multiplexed ring networks
34975995687Circuit for testing an optical communication system
34985995276Wavelength-division-multiplexing optical amplifier device and wavelength-division-multiplexing optical transmission system
34995995274Multi-wavelength light amplifier
35005995257Add/drop multiplexer for multiwavelength pulse oriented optical communications systems
35015995256Method and system for managing optical subcarrier reception
35025995255Concatenated fiber grating optical monitor
35035995254Wavelength division multiplexing light transmitting system
35045991059Marshalling in optical TDMA systems
35055987303Wireless transmission using fiber link
35065986800Optical amplification apparatus
35075986783Method and apparatus for operation, protection, and restoration of heterogeneous optical communication networks
35085986782Signal-to-noise monitoring in WDM optical communication systems
35095982791Wavelength tracking in adjustable optical systems
35105982518Optical add-drop multiplexers compatible with very dense WDM optical communication systems
35115978529Gain equalizer and optical amplifying transmission line
35125978131In-fiber two-stage amplifier providing WDM signal conditioning
35135978119System and method for synchronizing an optical source and a router in a wavelength division multiplexed fiber optic network
35145978117Dynamic reconfiguration of a wireless network using flexible wavelenght multiplexing
35155978116Programmable wavelength router
35165978115Span management system for wavelength division multiplexed network
35175978114Modular cascaded Mach-Zehnder DWDM components
35185974207Article comprising a wavelength-selective add-drop multiplexer
35195970201Power regulation in optical networks
35205970198Optically amplifying fiber and optical fiber amplifier
35215969836Method and apparatus for simultaneous transmission of digital telephony and analog video over a single optic fiber using wave division multiplexing
35225966237Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied
35235966236Optical signal channel counter and optical amplification device using the same
35245963685Cross-connection of wavelength-division-multiplexed high speed optical channels
35255963348Method for assignment of wavelength channels in an optical bus network
35265960133Wavelength-selective optical add/drop using tilting micro-mirrors
35275959986Lightwave transmission telecommunications system employing a stacked matrix architecture
35285959766Optical amplifier device
35295959750Method of upgrading transmission capacity by Raman amplification
35305959749Optical add/drop multiplexer/demultiplexer
35315956166Wavelength division multiplexing optical transmission system and wavelength division multiplexing optical transmission method
35325953470Circuit for optical WDM system
35335953141Dynamic optical add-drop multiplexers and wavelength-routing networks with improved survivability and minimized spectral filtering
35345953139Wavelength division multiplexing system
35355953138All-optical processing in communications systems
35365949925Method, device, and system for optical modulation in wavelength division multiplexing
35375949580Multipole light switch or multiplexer using rotator and interferometer
35385949563Wavelength division multiplexing transmitter receiver, optical transmission system, and redundant system switching method
35395949562Transmission wavelength control method permitting efficient wavelength multiplexing, optical communication method, optical transmitter, optical transmitter-receiver apparatus, and optical communication system
35405946430Switchable wavelength add/drop component
35415946119Wavelength division multiplexed system employing optimal channel modulation
35425943162Optical amplifier, optical amplifying method and optical transmission system using the optical amplifier
35435943149Optical multiplexor/demultiplexor using a narrow band filter followed by a wideband filter
35445943148Surveillance system of a multi-wavelength ring network
35455940568Planar optical waveguide, planar optical waveguide with Bragg grating, and method of fabricating such a planar optical waveguide
35465940205Channel counter and method of controlling an optical output level with same
35475940197Optical add-drop device
35485940196Optical communications system with wavelength division multiplexing
35495938309Bit-rate transparent WDM optical communication system with remodulators
35505937116Optical transmission system and method using wavelength division multiplex
35515936753Optical network system
35525933270Optical equalizer
35535933262Optical amplification device and wavelength multiplexed light transfer apparatus using the same
35545933260Method and system for wavelength division multiplexer
35555930016Upgradable modular wavelength division multiplexer
35565930015Optical access system
35575930014Network system having node devices connected therebetween, node device used in the network system, and communication method utilized in the network system
35585926590Power equalizer in a multiple wavelength bidirectional lightwave amplifier
35595926301Method and apparatus for optical wireless communication
35605926300Optical add-drop multiplexer
35615926299System for distributing optical signals
35625923797Frequency-controlled optical switch
35635923683Coherent white light source and optical devices therewith
35645923453Apparatus for measuring optical transmission line property and optical wavelength multiplexing transmission apparatus
35655923450Optical channel regulator and method
35665923449Optically restorable WDM ring network using simple add/drop circuitry
35675920413Method and device for optical add/drop multiplexing using high speed polarization scrambler
35685917623Wavelength division multiplexing systems
35695915052Loop status monitor for determining the amplitude of the signal components of a multi-wavelength optical beam
35705914795Method of and device for amplifying channels extracted from a wavelength division multiplex
35715912754Method for transmitting WDM optical signal to be amplified by optical amplification repeaters and systems used in same
35725912751Fiber optic network using space and wavelength multiplexed data channel arrays
35735912750Optical transmission line
35745912749Call admission control in cellular networks
35755912748Switchable wavelength router
35765911019Method for upgrading a hybrid fiber coax network to an all fiber network
35775909305Method and apparatus for monitoring the momental wavelength of light, and an optical amplifier and an optical communication system which incorporate the method and apparatus to adjust gain tilt
35785909297Drift compensating circuit for optical modulators in an optical system
35795909294Full-duplex wavelength division multiplexing system using single-device transceivers
35805907420System and method for mitigating cross-saturation in optically amplified networks
35815907417Passive optical network with diagnostic loop-back
35825903385Remotely pumping type multi-wavelength light transmission system
35835903371Transparent optical self-healing-ring communication network
35845900970Optical filter and optical transmission system having the same
35855900968Method of fast gain control in WDM optical networks
35865898801Optical transport system
35875898697Arrangement for defining a transmission delay in a subscriber network
35885896217Optical transmission system, optical multiplexing transmission system, and related peripheral techniques
35895896213Optical fiber network system
35905896212Wavelength division multiplexing optical communication network
35915896211Optical communication system
35925892773Radio frequency cable to optical fiber cable converter/interface
35935889904Integrable fiberoptic coupler and resulting devices and systems
35945886802Wavelength control method and optical communication apparatus for performing wavelength division multiplex communication
35955880865Wavelength-division-multiplexed network having broadcast capability
35965880864Advanced optical fiber communications network
35975877879Wavelength division multiplexing optical transmission system and optical transmitting device used in the transmission system
35985875045Wavelength-multiplexing optical communication method employing RZ signals, wavelength-multiplexing optical sending apparatus employing RZ signals, and wavelength-multiplexing optical communication system employing RZ signals
35995872650Optical amplifiers
36005872645Telecommunications network
36015870217Multi-wavelength optical batch amplification apparatus
36025867291Programmable wavelength router
36035867290High capacity spread spectrum optical communications system
36045867289Fault detection for all-optical add-drop multiplexer
36055864415Fiber optic network with wavelength-division-multiplexed transmission to customer premises
36065864414WDM network with control wavelength
36075864413Passive optical network for dense WDM downstream data transmission and upstream data transmission
36085862138Adaptive routing in a multiple network communication system
36095861967Wavelength multiplexed light transfer unit and wavelength multiplexed light transfer system
36105861966Broad band optical fiber telecommunications network
36115861965Optical communication system employing spectrally sliced optical source
36125859718Simplified switching control device, and a network system for employing the device: and a simplified switching control method, and a communication method for employing the method

1998

36135854699Multiplexed subcarrier control in wavelength division multiplexed broadband networks
36145854698Repeaterless branch powered fiber optic communication system
36155852510Amplified telecommunication system for wavelength-division multiplexing transmission having an equalized reception power
36165852505Dense waveguide division multiplexers implemented using a first stage fourier filter
36175850303Optical transmission system and optical transmission device used therefor
36185850301Wavelength multiplexed light transfer unit and wavelength multiplexed light transfer system
36195848059Node device used in network system for packet communication, network system using such node devices, and communication method used therein
36205847862Multi-channel optical fiber communication system
36215847852Optical network
36225841557Method and apparatus for scrambling the polarization of signal lights forming a wavelength division multiplexed signal light
36235838477Optical submarine branching device
36245838470Optical wavelength tracking receiver
36255835260Optical amplifier, optical amplifying method and optical transmission system using the optical amplifier
36265831754Optical amplifier
36275828669Network system connecting node devices with plural channels, node device used therein, and transmission control method therefor
36285828474Optical apparatus for transmitting data of an electrical signal
36295825949Optical wavelength division multiplexer for coupling to data sources and sinks, wherein at least two data sources and sinks operate with different communication protocols
36305825520Optical demultiplexers with grating reflectors
36315825518Optical transmission unit
36325822476Time delay device for optical signals
36335822474Optical branching apparatus and transmission line setting method therefor
36345822096Optoelectronic apparatus
36355822095Optical add-drop multiplexer
36365818629Method and apparatus for monitoring the momental wavelength of light, and an optical amplifier and an optical communication system which incorporate the method and apparatus to adjust gain tilt
36375818616Optical communication apparatus and conference system
36385815299Method and system for equalizing respective power levels of channels of a received optical frequency division multiplexed signal
36395815296Optical communication method for performing communication using a plurality of wavelengths, and optical communication system for performing communication using a plurality of wavelengths
36405815295Optical communication system with improved maintenance capabilities
36415815294Optical transmission system with transmission characteristic measuring device
36425812710Apparatus and method for optical equalization and amplification
36435812709Optical device having switching function
36445812306Bidirectional WDM optical communication systems with bidirectional optical amplifiers
36455812289Optical repeater and optical transmitter
36465809190Apparatus and method of making a fused dense wavelength-division multiplexer
36475808787Amplified telecommunication system for wavelength-division multiplexing transmissions
36485808767Fiber optic network with wavelength-division-multiplexed transmission to customer premises
36495808764Multiple star, passive optical network based on remote interrogation of terminal equipment
36505808763Optical demultiplexor
36515808762Telecommunication system and method for wavelength-division multiplexing transmissions with a controlled separation of the outgoing channels and capable of determining the optical signal/noise ratio
36525805751Wavelength selective optical couplers
36535805322Multiplex optical communication system
36545805321Control unit for optical modulators producing multiplexed optical output signal
36555801864Optical frequency division multiplexing network
36565801862Synchronous modulation method and apparatus for in-line regeneration of a WDM soliton signal, and an optical telecommunications systems using the method
36575801861Communication system for performing wavelength division multiplexing communications, and wavelength control method used in the system
36585801860Wavelength division multiplexing transmission system comprising a feedback section for transmitting a light power level signal from a light receiver to a light transmitter
36595801859Network system having transmission control for plural node devices without arbitration and transmission control method therefor
36605801858Optical transmission systems using optical amplifiers and wavelength division multiplexing
36615798858Method and apparatus for reducing adverse effects of optical beat interference in optical communication systems
36625798855Optical monitoring channel for wavelength division multiplexed optical communication system
36635796503Optical communication system wherein optical beat interference at the center is reduced
36645796502Multiple independent/dependent monochromatic light frequency fiber optic communication system and method
36655796501Wavelength division multiplexing optical communication network
36665793912Tunable receiver for a wavelength division multiplexing optical apparatus and method
36675793910Method and circuit arrangement for frequency stabilization of a WDM multiplexer/demultiplexer
36685793908Wavelength multiplexed light transfer unit and wavelength multiplexed light transfer system
36695793509Telecommunications network
36705793508Wavelength-division multiplexing telecommunication system and method providing a controlled separation of the output channels
36715793507Discretely chirped multiple wavelength optical source for use in a passive optical network telecommunications system
36725793506Optical transmission system for cable television signals and video and telecommunications signals
36735790301Optical filter module and optical amplification using it
36745790289WDM optical communication method with pre-emphasis technique and an apparatus therefor
36755790288Transport network with high transmission capacity for telecommunications
36765790287Optical communication system with improved maintenance capabilities
36775786916Optical-wavelength interchanger element and optical-wavelength interchanger device
36785786915Optical multiplexing device
36795786914WDM channel insertion
36805784184WDM Optical communication systems with remodulators and remodulating channel selectors
36815784170Apparatus for generating quasi equally spaced frequencies using an optical frequency shifter in a multi-channel transmission system
36825781335Circuit arrangement for optical frequency conversion
36835778118Optical add-drop multiplexers for WDM optical communication systems
36845777762Network system for performing bidirectional transmission, and node device and transmission control method used in the system
36855774606Optical fiber transmission system with a passive optical router
36865774244Optical communications networks
36875774243Control method of selecting wavelength of optical filter, wavelength control method of output light from light outputting apparatus, wavelength division multiplexing method in optical communication system and method for correcting relation between control
36885771112Reconfigurable device for insertion-extraction of wavelengths
36895771111Optical network
36905768000Wavelength multiplexing optical transmission device
36915767998Wavelength-division multiplexed communication system utilizing optical solitons
36925767996Optical transmission system
36935767995System and methods for assessing the suitability of analog lasers for broadband access applications
36945764821Large capacity local access network
36955764404Wavelength-division-multiplexing optical amplifier
36965760937Optical demultiplexer
36975760935Optical communications network
36985760934Ring network for transmitting wavelength-multiplexed informations
36995754555Subscriber network arrangement for connecting subscribers to a telephone network
37005754322Optical transmission system, optical multiplexing transmission system, and related peripheral techniques
37015754321Add/drop optical circuit for a wavelength-division multiplexed network
37025751456Multiwavelength add/drop multiplexer
37035751455Optical transmission system and optical network terminals used therein
37045751454Wavelength bypassed ring networks
37055748824Positive dispersion optical waveguide
37065748815Optical component adapted to monitor a multiwavelength link and add-drop multiplexer using this component, application to optical networks
37075748364Amplified telecommunication system for wavelength-division multiplexing transmissions
37085748350Dense wavelength division multiplexer and demultiplexer devices
37095748349Gratings-based optical add-drop multiplexers for WDM optical communication system
37105748348Optical communication system for cable-television signals and for subscriber-assigned signals
37115745613Wavelength-division multiplexing optical communication apparatus and method therefor
37125745283Method and apparatus for controlling optical amplifier used for optically amplifying wavelength-division multiplexed signal
37135745271Attenuation device for wavelength multiplexed optical fiber communications
37145745270Method and apparatus for monitoring and correcting individual wavelength channel parameters in a multi-channel wavelength division multiplexer system
37155745269Method for the management of wavelength-division-multiplexed optical loops
37165742605Synchronous optical network using a ring architecture
37175742585Network for connecting a plurality of nodes using a plurality of channels
37185742416Bidirectional WDM optical communication systems with bidirectional optical amplifiers
37195742414Multiplicity of services via a wavelength division router
37205740289Optical arrangement for amplifying WDM signals
37215739934Wavelength division multiplexing lightwave transmission system
37225739932Optical transmission system constructing method and system
37235737106Wavelength selective optical delay line
37245726785Optical add-drop multiplexer using optical circulators and photoinduced Bragg gratings
37255726784WDM optical communication system with remodulators and diverse optical transmitters
37265726783Optical fibre communication system
37275724166Information sharing method for a plurality of nodes in communication system and communication system
37285724165Fault-tolerant optical routing switch
37295721796Optical fiber cross connect with active routing for wavelength multiplexing and demultiplexing
37305721635Optical fiber amplifier and optical amplifier repeater
37315719971Strain based optical fiber systems
37325719697Method and apparatus for combining add/drop optical signal lines from a plurality of branching units
37335717796Optical fiber transmission system utilizing a line switched ring to provide protection
37345717795Optical wavelength division multiplexed network system
37355717510Optimized optical transmission system for high capacity transmission
37365715076Remodulating channel selectors for WDM optical communication systems
37375712936Hybrid bi-directional three color wave division multiplexer and method using same
37385712932Dynamically reconfigurable WDM optical communication systems with optical routing systems
37395712717High isolation, optical add-drop multiplexer
37405712716Telecommunication system and method for wavelength-division multiplexing transmissions with a controlled separation of the outgoing channels and capable of determining the optical signal/noise ratio
37415710650Dispersion-reducing multiple wavelength division multiplexing optical fiber transceiver and methods for using and assembling same
37425710649Apparatus and methods for nulling non-random timing jitter in the transmission of digital optical signals
37435706375Variable-attenuation tunable optical router
37445706125Optical signal amplifying circuit
37455706111Optical communications network

1997

37465701194Amplified telecommunication system for wavelength-division multiplexing transmissions capable of limiting variations in the output power
37475701186Optical cable TV system
37485699177Communication method in network system for performing information transmission among terminal equipments using light beams of a plurality of wavelengths, terminal equipment used in the method and network system using the method
37495699081Apparatus and method for automatically provisioning power on a per channel basis in a communications transmission system
37505696615Wavelength division multiplexed optical communication systems employing uniform gain optical amplifiers
37515696614Optical wavelength multiplex transmission method and optical dispersion compensation method
37525694234Wavelength division multiplexing passive optical network including broadcast overlay
37535694233Switchable wavelength router
37545689594Multiple wavelength bidirectional lightwave amplifier
37555687014Optical distribution shelf for a remote terminal of an optical fiber telecommunications network
37565682445Strain based optical fiber devices
37575680546Passive optical network structure with high fault tolerance
37585680490Comb splitting system and method for a multichannel optical fiber communication network
37595680247Optical amplification monitoring apparatus
37605680238Hybrid SCM optical transmission apparatus
37615680234Passive optical network with bi-directional optical spectral slicing and loop-back
37625678198System for controlling signal level at both ends of a transmission link, based upon a detected value
37635675676Optical branching apparatus and transmission line switching method
37645675432Optical amplification apparatus
37655673267Method of allocating carrier frequencies for simultaneous transmission of a plurality of modulated signals especially on an optical link
37665673133Phase synchronization system
37675671074Optical multiplex transmission equipment and method
37685668652Optical WDM (wavelength division multiplexing) transmission system and method for configuring the same
37695663822Optical comb generator using optical white noise source
37705661585Passive optical network having amplified LED transmitters
37715661584Optoelectronic apparatus
37725661580SCM type of optical signal transmission system without clipping distortion
37735659351Switch and insertion networks in optical cable TV system
37745657406Efficient optical wavelength multiplexer/de-multiplexer
37755654816Performance monitoring and fault location in optical transmission
37765654814Optical semiconductor apparatus and optical communication system using the apparatus
37775652814Integrable fiberoptic coupler and resulting devices and systems
37785652767Data decision circuit used in optical parallel receiving module, optical parallel receiving module, optical parallel transmission system and terminal structure of optical transmission fiber
37795647035Ring network communication structure on an optical carrier and reconfigurable node for said structure
37805646762Optical communication system using tandem Fabry-Perot etalon for wavelength selection
37815644423Method and device for optical amplification
37825642448Integrable fiberoptic coupler and resulting devices and systems
37835642447Fiber optic network transmission system with integrated optical isolator couplers
37845640269Optical fiber amplifier and optical amplifier repeater
37855636301Optical waveguide amplifiers
37865636047Optical interconnection system
37875636046Optical dispersion compensation method using transmissible band determined from synergetic effect of self phase modulation and group velocity dispersion
37885633741Multichannel optical fiber communications
37895631758Chirped-pulse multiple wavelength telecommunications system
37905629995Wavelength filter arrangements for use in fiber optics
37915629803System for a direct image transmission by spectral coding
37925627668Subcarrier-multiplexed optical transmission systems using optical channel selection
37935625478Optically restorable WDM ring network using simple add/drop circuitry
37945619359Optoelectronic apparatus
37955617233Transparent optical node structure
37965615290Branch device for optical multiplex system
37975615036Optical network comprising node groups and an analog repeater node unit between two node groups
37985615035Photonic dual bus for wide-area CATV broadcast and data transport
37995613210Telecommunication network for transmitting information to a plurality of stations over a single channel
38005612807Optical dispersion compensation method for shifting a zero dispersion wavelength of an optical fiber to compensate for dispersion in an optical system
38015612806Acknowledgement using subcarrier multiplexed tones
38025612805Add-drop optical spectrum-division multiplexer
38035610744Optical communications and interconnection networks having opto-electronic switches and direct optical routers
38045608826Wavelength division multiplexed optical modulator and multiplexing method using same
38055608825Multi-wavelength filtering device using optical fiber Bragg grating
38065608571Optical amplifiers
38075606439Tunable add/drop optical filter
38085604627Optical amplifier device
38095602666Optical dispersion compensation method for shifting a zero dispersion wavelength of an optical fiber to compensate for dispersion in an optical system
38105600487Dichroic mirror for separating/synthesizing light with a plurality of wavelengths and optical apparatus and detecting method using the same
38115600481Optical fiber amplifier and optical transmission system using the same
38125600473Optical amplifier systems with add/drop multiplexing
38135600468Apparatus for converting wavelength-division multiplexed optical signals
38145600467Method and apparatus for reducing harmonic interference on multiplexed optical communication lines
38155600466Wavelength division optical signalling network apparatus and method
38165598289Optical systems making use of phenomenon of stimulated brillouin scattering
38175598287Multiple access telecommunication network
38185596667Application of phase conjugate optics to optical systems
38195596661Monolithic optical waveguide filters based on Fourier expansion
38205596436Subcarrier multiplexing with dispersion reduction and direct detection
38215594581Low loss optical transmission/monitoring path selection in redundant equipment terminals

1996

38225589969Wavelength division multiplexed optical fiber transmission equipment
38235589968Mode-locked diode laser based optical communication system
38245589967Method and device for transmitting and switching packets in an optical network
38255583855Add/drop multiplexer apparatus
38265583683Optical multiplexing device
38275581554Multiple access telecommunication network
38285579421Optical integrated circuits and methods
38295579143Optical system with tunable in-fiber gratings
38305576875Telecommunications network organized in reconfigurable wavelength-division-multiplexed optical loops
38315576874Optical distribution shelf for a remote terminal of an optical fiber telecommunications network
38325574589Self-amplified networks
38335574584Wavelength division multiplexing passive optical network with bi-directional optical spectral slicing
38345572350Method and apparatus to compensate for differential attenuation in an optical time slot interchanger
38355570219Optical transmitter for subcarrier frequency multiplexed optical transmission system
38365566018Apparatus for adjusting channel width of multi-channel fiber amplifier light source
38375566014Tunable add/drop optical filter providing arbitrary channel arrangements
38385563733Optical fiber amplifier and optical fiber transmission system
38395559624Communication system based on remote interrogation of terminal equipment
38405557442Optical amplifiers with flattened gain curves
38415557439Expandable wavelength division multiplexed optical communications systems
38425555477Optical transmission system constructing method and system
38435555330Wavelength division multiplexed coupler with low crosstalk between channels and integrated coupler/isolator device
38445555121Process for simultaneous optical modulation transposition on several wavelengths
38455555118Method for removing and inserting optical carriers in a WDM optical communication system
38465552919Tunable-filter control method, tunable-filter control apparatus and optical communication system using the same
38475552881Method and apparatus for scanning a fiber optic network
38485550818System for wavelength division multiplexing/asynchronous transfer mode switching for network communication
38495550666Wavelength division multiplexed multi-frequency optical source and broadband incoherent optical source
38505548431Bidirectional multi-channel optical ring network using WDM techniques
38515546210Multi-channel optical fiber communication system
38525543951Method for receive-side clock supply for video signals digitally transmitted with ATM in fiber/coaxial subscriber line networks
38535542010Rapidly tunable wideband integrated optical filter
38545541766Gain control for optically amplified systems
38555541758Phototransmission method
38565541757Optical fiber cable service system provided with video on demand service
38575541756Apparatus and method for routing optical signals through wavelength-coding in a self-routed wavelength addressable network
38585537634Subcarrier-multiplexed optical transmission systems using optical channel selection
38595532870Optical fiber amplifier and optical amplifier repeater
38605532865Fiber optic communication terminal, fiber optic communication system, and its wavelength setting method
38615532864Optical monitoring channel for wavelength division multiplexed optical communication system
38625530575Systems and methods for employing a recursive mesh network with extraplanar links
38635526155High-density optical wavelength division multiplexing
38645526153Optical channel adding/dropping filter
38655526152Repeater-less multigigabit lightwave buses with optical amplifiers
38665524155Demultiplexer for wavelength-multiplexed optical signal
38675521732Optical wavelength selection control system in optical networks
38685519796Gain equalization using monolithic planar waveguide grating multiplexer and demultiplexer
38695517232Cable television distribution network with video-on-demand transmission
38705515192Optical systems making use of phenomenon of stimulated brillouin scattering
38715513029Method and apparatus for monitoring performance of optical transmission systems
38725510926Transmission method and an optical link using multiplexing with application
38735510923Telecommunications system combining wavelength multiplexing and packet switching networks
38745510921Optical frequency division multiplexing network
38755504827Programmable optical filter and optical circuit arrangement
38765504826Optical module for subcarrier multiplexed optical transmission system
38775504609WDM optical communication system with remodulators
38785504606Low power optical network unit
38795502782Focused acoustic wave fiber optic reflection modulator
38805502589Optical communication systems and optical nodes for use therein
38815500908Optical switch and transmitter and receiver for a multiplex transmission system including such a switch
38825500857Inter-nodal communication method and system using multiplexing
38835500758Method and apparatus for transmitting broadband amplitude modulated radio frequency signals over optical links
38845500756Optical fiber transmission system and supervision method of the same
38855493625Fast tunable channel dropping filter
38865491575Passive optical telecommunication system
38875488501Optical processing system
38885488500Tunable add drop optical filtering method and apparatus
38895487120Optical wavelength division multiplexer for high speed, protocol-independent serial data sources
38905483371Lightwave distribution system for audio and video services and terminal equipment therefor
38915483370Crossconnect apparatus for a coherent transmission system
38925483368Optical communication system suitable for selective reception of multiple services
38935481542Interactive information services control system

1995

38945479287Switchable optical network with improved transmission ability
38955479286Optical fibre communications system
38965479164Photonic data compression system and method
38975479082Device for extraction and re-insertion of an optical carrier in optical communications networks
38985477364Data transmission on optical networks
38995469288Optical filter, method of controlling transmission wavelength thereof, and optical receiver using the method
39005467212Addressable grating modulation system for optical cable TV system
39015463487Optical transmission system
39025457811System for controlling signal level at both ends of a transmission sink based on a detected value
39035457760Wavelength division optical multiplexing elements
39045452124Unidirectional amplification for bi-directional transmission using wavelength-division multiplexing
39055452116Transmission systems incorporating optical amplifiers
39065452115Communications system
39075450510Wavelength division multiplexed optical modulator and multiplexing method using same
39085448663Optical coupler
39095448660Wavelength selective optical switch
39105448390Wavelength division multiplex bothway optical communication system
39115443227Switching control for multiple fiber-guided missile systems
39125440417System for spectrum-sliced fiber amplifier light for multi-channel wavelength-division-multiplexed applications
39135440415Optical successive modulation-muliplexing for fiber optical network
39145438445Optical wavelength multiplexing communication system
39155438444Optical routing system
39165436760Optical fiber amplifier with gain equalizing circuit
39175434937Optical filter having integrated transceivers
39185432632Optical communication system
39195430568Optical communications system for transmitting information signals having different wavelengths over a same optical fiber
39205426527System for transmitting multiple signals across a single fiber optic channel
39215422968Optical demultiplexing system with optical amplifiers
39225418785Multiple-channel token ring network with single optical fiber utilizing subcarrier multiplexing with a dedicated control channel
39235418637Cascaded distortion compensation for analog optical systems
39245410624Filter for a wavelength division multiplex system
39255406553Apparatus and method for converting a frequency division multiplex to a time division multiplex
39265406404Method of mitigating gain peaking using a chain of fiber amplifiers
39275400163Multiplex digital communication system for transmitting channel identification information
39285396360Wavelength-multiplexed optical communication system and optical amplifier used therefor
39295396359Node for grid type single mode fiber optic local area network using tunable filters
39305396357Fault tolerant optical cross-channel data link
39315392154Self-regulating multiwavelength optical amplifier module for scalable lightwave communications systems
39325390043Compressed channel spacing for optical heterodyne communication systems
39335387927Method and apparatus for broadband transmission from a central office to a number of subscribers
39345379309High frequency source having heterodyned laser oscillators injection-locked to a mode-locked laser
39355379141Method and apparatus for transmitting broadband amplitude modulated radio frequency signals over optical links

1994

39365377035Wavelength division multiplexed fiber optic link for RF polarization diversity receiver
39375375007Optical distribution system
39385371622Coherent optical telecommunication network wherein each send/receive terminal can simultaneously communicate with more than one other send/receive terminal
39395369516Optical communication network system and communication method using the same
39405369515Node for loop-type optical LAN and a loop-type optical LAN using the same
39415367396Optical frequency marking method and different frequency channel communication network using it
39425365344System for transmitting data using wavelength division multiplexing
39435363221Optical multiplexer
39445361262Estimated-queue, expanded-bus communication network
39455361154Method and apparatus for performing wavelength-tuning and clock-synchronization in a wavelength division multiplexing optical communication network
39465351148Optical transmission system
39475351146All-optical network architecture
39485343314Optical fiber communication method and multimedia optical fiber network using the same
39495339187Wide dynamic range high frequency signal transmission utilizing a logarithmic amplifier
39505339183Optical signal transmission device
39515337175Optical communications system for the subscriber area with optical amplifiers
39525335104Method of detecting breaks in multi-drop feeder systems
39535327423Method and a network for transmitting messages in frequency channels
39545327276Optical local area network system and node apparatus used in the same
39555323256Apparatus for controlling remote servoactuators using fiber optics
39565323255Transceiver arrangement using TDM to transmit assigned subcarrier waveforms
39575321849System for controlling signal level at both ends of a transmission link based on a detected valve
39585321540Optical frequency division multiplexing network
39595319489Method and apparatus for relative positioning of a frequency, in particular an optical frequency
39605319485Wavelength-assignable optical communication system
39615317440Single wavelength bidirectional optical fiber communication link
39625315436Fiber optics system
39635315423Wavelength multiplexed two dimensional image transmission through single mode optical fiber
39645311347Optical communication system with automatic gain control
39655311344Bidirectional lightwave transmission system
39665307191Communications method and network with frequency allocation
39675303229Optical network unit
39685301056Optical distribution system
39695301053Method for transmission and receipt of coherent light signals
39705301052Communication method and network using optical fibers with frequency multiplexing
39715289302Access method for optical local area network systems
39725283686Optical systems with grating reflector
39735278690Apparatus and method for synchronizing a plurality of remote transmission and receiving stations and providing automatic gain control of the synchronizing signal
39745278687Multiwavelength data communication fiber link
39755276543Optical signal equalizer for wavelength division multiplexed optical fiber systems

1993

39765272555Bidirectional optical transmission method and apparatus therefor
39775267074Coherent optical heterodyne transmission system
39785253250Routing and switching of high-speed optical data with the header transmitted on a subcarrier frequency
39795245681Rapidly reconfigurable wavelength multiplexing device
39805245404Raman sensor
39815231529Light amplifier for multi-wavelength signals
39825228105Programmable electro-optic packaging and interconnect system
39835227624Optical sensing systems with plural wavelengths and wavelength sensitive sensors
39845225922Optical transmission system equalizer
39855224183Multiple wavelength division multiplexing signal compensation system and method using same
39865222103Differential quadrature phase shift keying encoder for subcarrier systems
39875221983Passive photonic loop architecture employing wavelength multiplexing
39885216532Optical multiplexing
39895212577Optical communication equipment and optical communication method
39905212534Distance-measuring method and transmitting and receiving station for carrying out the same
39915208692High bandwidth network based on wavelength division multiplexing
39925204767Pay-channel transmission system for CATV
39935202782Optical communication method and optical communication system
39945202780Optical communication system for the subscriber area
39955191459Method and apparatus for transmitting broadband amplitude modulated radio frequency signals over optical links
39965191458Optical electronic multiplexing reflection sensor system
39975191457WDM optical communication wherein optical beams are modulated by channel discrimination signals of different frequencies by data signals
39985189414Network system for simultaneously coupling pairs of nodes
39995182667Method of receiving wavelength multiplex signals

1992

40005173794Wavelength division multiplexing using a tunable acousto-optic filter
40015162937Optical cable television transmission system
40025161153Synchronous network
40035157530Optical fiber system
40045153764Control of optical systems
40055144467Optical tuning method and apparatus suitable for selective reception of optical frequency division multiplex signals
40065144466Optical fiber communication method and multimedia optical fiber network using the same
40075142532Communication system
40085140451Aircraft signal distribution system
40095136411Dynamically responsive CATV system with shared fiber optic link
40105134509Coherent subcarrier multiplexed optical communication system
40115128790Optical cable television transmission system
40125121381Optical switching apparatus for digital signal cross connection and method of interswitch optical transmission of digital signals
40135113459Optical fiber telecommunication line with separate, optically transmitted service channels
40145113458Optical multiplexing
40155111519Method of interference reduction for frequency multiplexed optical fiber communication
40165107360Optical transmission of RF subcarriers in adjacent signal bands
40175105293Differential optical signal transmission using a single optical fiber
40185101450Quadrature optical phase modulators for lightwave systems
40195101291Optical frequency conversion device
40205101290High-performance packet-switched WDM ring networks with tunable lasers
40215099114Optical wavelength demultiplexer
40225095381Passive tap network
40235086349Optical switching system which employs reference beams with different wavelengths

1991

40245077728Frequency division multiple access network
40255063559Optimized wavelength-division-multiplexed lightwave communication system
40265062155Modulated light wave demodulator
40275058102Broadband optical communication system, particularly for the subscriber area
40285058101Coherent detection loop distribution system
40295043975High bandwidth network based on wavelength division multiplexing
40305031985Optical switch system and apparatus
40315029240Electronically tuneable fiber-optic receiver for narrow band microwave signal reception
40325020152Fault tolerant-fiber optic coupler/repeater for use in high speed data transmission and the like
40335020049Optical sub-carrier multiplex television transmission system using a linear laser diode
40345016242Microwave subcarrier generation for fiber optic systems
40355010543Optical multiplexing
40364999831Synchronous quantized subcarrier multiplexer for digital transport of video, voice and data
40374989200Coherent subcarrier multiplexed optical communication system
40384989199Photonic switch architecture utilizing code and wavelength multiplexing

1990

40394978189Hybrid optical isolator, circulator or switch, and systems utilizing same
40404972352Semiconductors lasers
40414957340Synchronous multifrequency optical network
40424953954Phase-conjugate communication using mutually incoherent laser beams
40434953156Wideband subcarrier multiplexed optical communication system operating over more than one octave
40444947389Multi-channel ring architecture for distributed networks
40454945531Optical wavelength-division multiplex transmission system with an optical filter for spontaneous emission noise
40464942568Optical transmission device
40474941208High performance subcarrier multiplexed optical communication system with modulation index exceeding unity
40484938556Superfluorescent broadband fiber laser source
40494935918Optic system useful with metal service lines
40504933929Wavelength multiplexed optical transmitter for generating constant-amplitude angle-modulated beams to eliminate phase noise in adjacent transmission channels
40514922481Optical communication systems enabling minimal subscriber components
40524914648Multichannel, multihop lightwave communication system
40534910726Optical fibre communication networks with local optical power feeding
40544906064Switch for selectively switching optical wavelengths
40554897830Optical networks
40564897562Process and apparatus for efficient sum and difference frequency generation
40574890893Dark fiber switched bandwidth filter

1989

40584873681Hybrid optical and electronic packet switch
40594867522Wavelength sensitive optical devices
40604859016Fiber optic amplifier
40614857726Method to decode relative spectral data
40624842357Integrated wavelength division multiplexed optical sensor
40634841519Apparatus for discriminating an optical signal from others and an apparatus for tuning an optical wavelength filter used in the same
40644839884Multiple wavelength optical source and multiplexed light communication system
40654837856Fault-tolerant fiber optic coupler/repeater for use in high speed data transmission and the like
40664836634Wavelength multiplexer/demultiplexer using optical fibers
40674831616Multiplexed fiber optics wideband data distribution system
40684824201Simultaneous transmission of LED and laser signals over single mode fiber
40694821255Cross-connection of wavelength-division-multiplexed high speed optical channels
40704817202Process and apparatus for control and monitoring of installation by transmission of information and of commands by optical means
40714809362Fiber-optic star tree network
40724800555Technique for repelling carriers in optical communications to minimize mutual interference
40734797879Packet switched interconnection protocols for a star configured optical lan

1988

40744792999Wavelength agile optical receiver
40754791630Method and apparatus for optical communication by frequency modulation
40764791407Alternate mark/space inversion line code
40774778238Optical communications systems and process for signal amplification using stimulated brillouin scattering (SBS) and laser utilized in the system
40784777664Broadband optical distribution system
40794768186Multiplex transmission of analog signals by fiber optic channel
40804763969Adjustable optical demultiplexer
40814763317Digital communication network architecture for providing universal information services
40824761777Optical multiplex systems
40834760569Integrated optical multiplex-demultiplex module for optical communications transmission
40844759011Intranetwork and internetwork optical communications system and method
40854754452Optical local area network using a common optical carrier with separate user angle modulation
40864749247Self-monitoring fiber optic link
40874742576Optical communication system employing coherent detection and method
40884726010Optical communication system in the subscriber loop
40894723824Fiber optic amplifier

1987

40904715028Optical communication system
40914708425Bidirectional optical wavelength multiplexer-demultiplexer
40924705350Optical transmission network
40934703474Spread spectrum code-division-multiple-access (SS-CDMA) lightwave communication system
40944702550Optical fiber frequency filter and multiplexer using same
40954701904Optical local area network employing microwave modulation techniques
40964689826Optical communication of video and audio with cross-talk suppression
40974677618Method and apparatus for deskewing WDM data transmitted through a dispersive medium
40984677398Pulsed digital multiplex laser generator
40994662715Fiber optic network with reduced coupling losses
41004635246Frequency multiplex system using injection locking of multiple laser diodes

1986

41014625305Multiplexing of optical signals
41024592043Wavelength division multiplexing optical communications systems

1985

41034555810Distribution system for a local area network
41044543961Data transmission system
41054517456Color multiplexing passive sensor array

1984

41064483582Wavelength multiplexer-demultiplexer
41074467468Optical communication system
41084441181Optical wavelength-division multiplex system
41094430572Device for separating two light signals emitted by sources having different wavelengths and transmitted in a single optical fiber

1983

41104406003Optical transmission system
41114390236Tunable polarization independent wavelength filter
41124367040Multi-channel optical sensing system

1982

41134336981Simultaneous multi-beam optical modulation system

1981

41144269482Simultaneous multi-beam optical modulation system
41154267590Fiber-optical data-communication system using carriers of different wavelengths
41164244045Optical multiplexer and demultiplexer

1980

41174232385Frequency division multiplexing system for optical transmission of broadband signals

1979

41184146783Multiplexed optical communication system

1977

41194061577Fiber optic multiplex optical transmission system

1976

41203986020Common medium optical multichannel exchange and switching system
41213953727System for transmitting independent communication channels through a light-wave medium
© 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017