Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
07/2007
07/17/2007US7245829 Architecture for dynamic connectivity in an edge photonic network architecture
07/17/2007US7245582 Protection switching in a multi-stage switch fabric
07/17/2007US7245422 Raman optical amplifier, optical transmission system using the same, and raman optical amplification method
07/17/2007US7245421 Wavelength-division multiplexing optical communication system
07/17/2007CA2389974C Multi-wavelength optical modulation circuit and wavelength-division multiplexed optical signal transmitter
07/12/2007WO2007078805A1 Bi-directional parallel optical link
07/12/2007WO2007076767A1 Method and device for channel-adapted signal transmission in optical networks
07/12/2007US20070162946 Round trip delay adjustment in multipoint-to-point communication using orthgonal frequency division multiplexing
07/12/2007US20070162943 Multipoint-to-point communication using orthogonal frequency division multiplexing
07/12/2007US20070160372 Add-drop device and cross-connect device for wavelength multiplex signals
07/12/2007US20070160371 Optical receiver circuit applicable to multiple transmission rates
07/12/2007US20070159682 Optically controlled optical-path-switching-type data distribution apparatus and distribution method
07/11/2007EP1806878A1 Packet communication network and packet communication method
07/11/2007EP1806863A1 Method of interchannel time coding for multichannel transmission systems
07/11/2007EP1805913A2 Wireless signal distribution system and method
07/11/2007EP1618690A4 Method and system for use in optical code division multiple access
07/11/2007EP1260044B1 Method and apparatus for polarization multiplexing and demultiplexing optical tributary signals
07/11/2007CN1998172A Wavelength selection
07/11/2007CN1997238A TDMA passive optical network OLT system for broadcast service
07/11/2007CN1996810A A distributed wave division and fiber division optical switching system
07/11/2007CN1996809A The system and method for enhancing the robustness of the passive optical network
07/11/2007CN1996799A Optical packet access method based on the optical and electrical mixed cache structure
07/11/2007CN1996075A Wavelength selection device
07/11/2007CN1996073A Optical add-drop multiplexer, system thereof, and updating extension method therefor
07/11/2007CN1995936A Automated test control system and method for wavelength tunable laser
07/11/2007CN1325950C Fixing structure of two-way light transceiving modular
07/10/2007US7242870 Wavelength division multiplexing system
07/10/2007US7242868 System and method for performing high-speed communications over fiber optical networks
07/10/2007US7242866 Methods and apparatus for switching N optical input signals to M optical outputs
07/10/2007US7242865 Optical communication system
07/10/2007US7242864 Technique for power control in optical networks
07/10/2007US7242863 Method and system for coordinating and utilizing channel power information in an optical communications network
07/10/2007US7242862 Network diagnostic tool for an optical transport network
07/10/2007US7242861 Optical path cross-connect and optical wavelength multiplexing diversity communication system using the same
07/10/2007US7242860 Optical protection switching using 2 by 2 switching functions
07/10/2007US7242519 Raman amplifier and optical transmission system using the same
07/10/2007CA2220592C Optical path signal termination equipment
07/05/2007WO2007074979A1 Multiple star wavelength division multiplexing passive optical networks using a wavelength assignment method
07/05/2007WO2007074485A1 Method and device for tunable optical filtering
07/05/2007WO2007074432A1 Optical communication network and method of routing in the network
07/05/2007WO2007074297A1 Optical transmission between a central terminal and a plurality of client terminals via an optical network
07/05/2007WO2007073764A1 Method and system for tunable optical filtering
07/05/2007WO2007073763A1 Method and device for tunable optical filtering
07/05/2007US20070157278 Contention-based access to tones in orthogonal frequency division multiplexing (ofdm) waveform
07/05/2007US20070157277 Multipoint-to-point communication using orthogonal frequency division multiplexing
07/05/2007US20070154223 Synchronizing nodes in an optical communications system utilizing frequency division multiplexing
07/05/2007US20070154218 Optical discriminators and systems and methods
07/05/2007US20070154217 Extendable loop-back type passive optical network and scheduling method and apparatus for the same
07/05/2007US20070154216 Wavelength tracking apparatus and method in WDM-PON system
07/05/2007US20070154215 Method and apparatus for detecting optical reflections in an optical network
07/05/2007DE102005062735A1 Surface-mountable electro-optical device, has optical interface supplying optical multiplex signals, and electrical contacts outputting electrical signals, where optical device is built on optical component with mounting side
07/04/2007EP1804407A1 Acces node for optical ring network
07/04/2007EP1804406A1 A protective method for span-ring service in an optical network
07/04/2007EP1803307A1 Systems and methods for optical switching to colourless ports and coloured ports
07/04/2007EP1803243A1 Method and device for stabilizing the state of polarization of a polarization multiplexed optical radiation
07/04/2007CN1993915A Method and apparatus for interconnecting a plurality of optical transducers with a wavelength division multiplexed optical switch
07/04/2007CN1992563A System and method for automatic tuning of chromatic dispersion compensation for a WDM transmission system
07/04/2007CN1992561A Device and method for measuring quality factor of homology sampling
07/04/2007CN1324846C Bi-directional wavelength division multiplexing self-healing passive optical network
07/04/2007CN1324830C Expandable multicasting light exchange structure with light-regulating shunt
07/04/2007CN1324829C Method for implementing power equalization of dense wavelength divison multiplex system
07/04/2007CN1324826C Method and device for transmitting data in giga ethernet passive optical network
07/04/2007CN1324393C Non-polarizing multiple lambda light source
07/03/2007US7239809 Electrical pulse transformation using optical delay lines
07/03/2007US7239808 Subscriber interfacing device in communication-broadcasting convergence FTTH
07/03/2007US7239807 Variable clamp equalization method and apparatus
07/03/2007US7239775 High repetition rate, linear, true time optical delay line
07/03/2007US7239773 Optical-switch testing apparatus, optical-signal switching apparatus, optical-switch testing method, and control method for optical-signal switching
07/03/2007US7239772 Flexible waveband aggregator and deaggregator and hierarchical hybrid optical cross-connect system
07/03/2007US7239770 Optical device
07/03/2007US7239650 Apparatus and method for receiving upstream data transmissions from multiple remote transmitters
07/03/2007US7239649 Transmission system
07/03/2007US7239441 Raman amplification repeater
07/03/2007US7239440 Wavelength conversion apparatus
07/03/2007CA2431463C Monitoring and correcting bragg gratings during their fabrication
07/03/2007CA2413862C Method and apparatus for transmitting multiple signal, method and apparatus for receiving multiple signal, multiple signal transmission method and multiplexer/demultiplexer
06/2007
06/28/2007WO2007073382A1 System and method for re-using wavelengths in an optical network
06/28/2007WO2007072921A1 Optical transmission system and method
06/28/2007WO2007071586A1 Open fiber control and loss of light propagation in time division multiplexed inter-system channel link
06/28/2007WO2007071154A1 A wavelength division multiplexing passive optical network and its implement method
06/28/2007WO2007071114A1 A method for soft rerouting in optical network
06/28/2007WO2007014218A3 Wide free-spectral-range, widely tunable and hitless-switchable optical channel add-drop filters
06/28/2007US20070147841 Optical add/drop device
06/28/2007US20070147840 Variable dispersion compensator
06/28/2007US20070147839 Clock strobed data over one waveguide or fiber
06/28/2007US20070147838 Optical transmission apparatus and optical access network for wavelength-division multiplexing optical network with both sub-carrier multiplex and sub-carrier multiple access schemes
06/28/2007US20070147837 Method of increasing number of subscribers using time division duplexing technology in wavelength division multiplexing/Ethernet passive optical network system
06/28/2007US20070147836 Passive Optical Network Maintenance Method, an Optical Network Unit, and an Optical Line Terminal
06/28/2007US20070147835 Device and method for controlling optical transmitters in WDM-PON system
06/28/2007US20070147834 Dynamic bandwidth allocation method with punishment mechanism in passive optical network
06/28/2007US20070147833 Dynamic wavelength allocation apparatus and method
06/28/2007US20070147734 Optical device for simultaneously generating and processing optical codes
06/28/2007US20070147434 Data transmission method and data transmission device
06/28/2007US20070147229 Ranging and round trip delay timing adjustment in a multi-point to point bidirectional communication system
06/27/2007EP1801967A2 Active star point for use in a communications system with star topology
06/27/2007EP1800153A1 Wavelength selective reconfigurable optical cross-connect
06/27/2007CN1989718A 路径建立 Path is established
06/27/2007CN1988724A Radio connecting method and system for supporting multipe users and multiple systems
06/27/2007CN1988429A Access device for CATV optic network IP data path
06/27/2007CN1988426A Reference clock sending circuit and method for light repeat plate