Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
08/2002
08/13/2002US6433923 Optical transmission path having sections which overcompensate for dispersion occurring in the sections
08/13/2002US6433904 Method and apparatus for improving transmission performance over wavelength division multiplexed optical communication links using forward error correction coding
08/13/2002US6433903 Optical management channel for wavelength division multiplexed systems
08/13/2002US6433900 Optical wavelength multiplexing system having a redundant configuration
08/13/2002US6433864 Apparatus for monitoring optical signal-to-noise ratio of optical signals in WDM optical transmission system
08/13/2002US6433715 High-speed serial-to-parallel and analog-to-digital conversion
08/08/2002WO2002061996A1 Optical demultiplexer
08/08/2002WO2002061989A1 A method and system for transmission in an optical network
08/08/2002WO2002061981A2 Fiber optic communications
08/08/2002WO2001030005A9 System and method for transmitting and restoring an optical signal
08/08/2002US20020107979 Computer data transmission over a telecommunictions network
08/08/2002US20020106158 Apparatus and method for wavelength division multiplexing
08/08/2002US20020106147 Optical multiplexer and optical demultiplexer
08/08/2002US20020106146 Optical network structure
08/08/2002US20020106060 Communication system with multicarrier telephony transport
08/08/2002US20020105963 MAC protocol for optical packet-switched ring network
08/08/2002US20020105950 Computer data transmission over a telecommunications network
08/08/2002US20020105719 Optical transmission path having sections which overcompensate for dispersion occurring in the sections
08/08/2002US20020105715 Raman amplifier and optical transmission system using the amplifier
08/08/2002US20020105705 Optical CDMA communications system using OTDC device
08/08/2002US20020105695 Power balanced optical add multiplexer and power balancing methods therefore
08/08/2002US20020105694 Power balanced optical add/drop multiplexer and power balancing methods therefore
08/08/2002US20020105693 Optical transmission unit and system
08/08/2002US20020105692 Hierarchical WDM in client-server architecture
08/08/2002DE19930975C2 Verfahren zur Ermittlung des individuellen Übersprechens in Wellenlängenmultiplex-Systemen und Wellenlängenmultiplex-System A method for determining the individual crosstalk in wavelength division multiplexed systems and wavelength division multiplexing system
08/07/2002EP1229683A2 Upstream synchronisation in a multi-point to point communications system
08/07/2002EP1229368A2 Optical combiner system and method
08/07/2002EP1229361A2 Multiple band optical multiplexer and demultiplexer
08/07/2002EP1228660A1 Connection protection between clients and optical cross-connect switches
08/07/2002EP1228388A1 Volume or stacked holographic diffraction gratings for wavelength division multiplexing and spectroscopy
08/07/2002CN1362806A Routing and wavelength distributing method for optical wavelength division multiplexing network
08/06/2002US6430715 Protocol and bit rate independent test system
08/06/2002US6430336 Device and method for minimizing optical channel drift
08/06/2002US6430201 Method and apparatus for transporting gigabit ethernet and fiber channel signals in wavelength-division multiplexed systems
08/06/2002US6429974 Add-drop multiplexer
08/06/2002US6429966 Multistage optical amplifier with Raman and EDFA stages
08/06/2002CA2370606A1 Multiple band optical multiplexer and demultiplexer
08/06/2002CA2276275C Switchable wavelength router
08/06/2002CA2260314C Optical signal translator unit
08/06/2002CA2246148C Distortion penalty measurement procedure in optical systems using noise loading
08/01/2002WO2002060123A2 Method and system for processing downstream packets of an optical network
08/01/2002WO2002060105A1 Grooming of channels in wavelength division multiplexed optical communication systems
08/01/2002WO2002060097A1 A method and apparatus for variable rate pipes
08/01/2002WO2002060095A2 Processing of optical performance data in an optical wavelenght division multiplexed communication system
08/01/2002WO2002059658A2 Multi-channel optical filter
08/01/2002WO2002030019A3 System and method for communicating optical signals between a data service provider and subscribers
08/01/2002WO2002003576A3 Method for determining optimum pre-compensation in an optical system
08/01/2002US20020102937 Communication system with multicarrier telephony transport
08/01/2002US20020102050 Apparatus and method for control messaging in an optical network
08/01/2002US20020102049 Optical combiner system and method
08/01/2002US20020101652 Optical amplifier for amplifying multi-wavelength light
08/01/2002US20020101637 Method for channel balance
08/01/2002US20020101636 Self-adjusting optical add-drop multiplexer and optical networks using same
08/01/2002US20020101635 Communication system
08/01/2002US20020101634 Polarization beam combiner for fiber optic applications
08/01/2002US20020101633 Optical transmission apparatus, optical transmission system, and optical terminal station
08/01/2002US20020101631 Processing of optical performance data in an optical wavelength division multiplexed communication system
08/01/2002DE10110270C1 Verfahren zur Ermittlung von Wechselwirkungen zwischen mehreren optischen Kanälen eines Wellenlängen-Multiplex Signals Procedure for the determination of interactions between a plurality of optical channels of a wavelength-multiplexed signal
08/01/2002CA2435336A1 Grooming of channels in wavelength division multiplexed optical communication systems
08/01/2002CA2426831A1 Method and system for processing downstream packets of an optical network
07/2002
07/31/2002EP1227611A2 Wavelength multiplex optical communication module
07/31/2002EP1227610A2 Distributed intelligence MAC protocols for DWDM ring networks
07/31/2002EP1227606A1 Optical transmission device and optical repeating device
07/31/2002EP1226675A1 A device and a method for optical multiplexing/demultiplexing
07/31/2002EP1226674A1 Optical add-drop filter
07/31/2002EP1226668A1 Method for measuring the performance of broadband dense wavelength division multiplexer (dwdm) using non-linear iterative algorithm
07/31/2002EP0652652B1 Method and apparatus for receiving monitoring signal
07/30/2002US6427043 Wavelength dispersion compensating method and optical transmission system
07/30/2002US6426832 Wavelength-multiplexed light amplifying apparatus, optical amplifier and optical add-and-drop apparatus using wavelength-multiplexed light amplifying basic unit
07/30/2002US6426830 Single lens turnable wavelength division multiplexing fabry-perot filter using MEMS technology
07/30/2002US6426821 Optical upconverter apparatuses, methods and systems
07/30/2002US6426818 Optical interconnect for high speed processor
07/30/2002US6426817 Optical wavelength multiplexing system and terminal
07/30/2002US6426816 Wide transmission optical comb filter with wide pass band and wide stop band
07/30/2002US6426815 WDM ring transmission system having two hubs
07/30/2002CA2277665C Optical waveguiding component comprising a band-pass filter
07/25/2002WO2002058316A1 Data time difference absorbing circuit, and data receving method and device
07/25/2002WO2002058302A1 Wdm optical communications system
07/25/2002WO2002058301A2 Split wave method and apparatus for transmitting data in long-haul optical fiber systems
07/25/2002WO2002058285A2 Optical cdma communications system using otdl device
07/25/2002WO2002057815A2 Single-etalon, multi-point wavelength calibration reference and fully integrated optical system using the same
07/25/2002WO2001090804A3 Acousto-optic variable attenuator with active cancellation of back reflections
07/25/2002WO2001088571A8 Multi-channel optical transceiver
07/25/2002WO2001022627A9 Method and system to reduce fwm penalty in nrz wdm systems
07/25/2002US20020098798 Communication system with multicarrier telephony transport
07/25/2002US20020098797 Acquisition and tracking in communication system with multicarrier telephony transport
07/25/2002US20020098796 Hybrid/fiber coax video and telephony communication system with poly-phase filtering
07/25/2002US20020098795 Communicating errors in a telecommunications system
07/25/2002US20020097971 Optical fiber and optical communication system using this optical fiber
07/25/2002US20020097954 Communication network, wavelength division multiplex transmission equipment, optical switch equipment, and optical attribute/state administering method for them
07/25/2002US20020097731 Distributed intelligence MAC protocols for DWDM ring networks
07/25/2002US20020097671 Method for selecting a restoration path in a mesh network
07/25/2002US20020097481 Wdm optical communication system using co-propagating raman amplification
07/25/2002US20020097473 Method and system for identifying undesired products of non-linear optical mixing
07/25/2002US20020097467 Remote 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
07/25/2002US20020097466 Non-moving parts add/drop device
07/25/2002US20020097464 Method for adjusting time delays and device for synchronization of channels in a WDM system
07/25/2002US20020097463 Quality of service (QoS) based supervisory network for optical transport systems
07/25/2002US20020097462 Optical transmission device and optical transmission system
07/25/2002US20020097461 Bi-directional wavelength switched ring optical protection switching protocol