Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
10/2002
10/10/2002WO2002079837A1 All optical multiplexer
10/10/2002WO2002079836A1 Dual diffraction-grating device
10/10/2002WO2002079835A1 Optical coincidence gate
10/10/2002WO2002079832A1 Programmable optical add/drop multiplexer
10/10/2002WO2002079821A2 Optical demultiplexers based on arrayed waveguide grantings (awg) analysing te-and tm-polarisation directions
10/10/2002WO2002079816A2 All optical data selection element
10/10/2002WO2002079737A1 Optic device
10/10/2002WO2002046803A3 Apparatus and method for wavelength division multiplexing
10/10/2002WO2002033517A3 Closed loop amplified rings including lossy spans
10/10/2002WO2002011341A3 Optical wavelength router
10/10/2002WO2002003574A9 Method for wavelength switch network restoration
10/10/2002WO2001091341A9 Channel equalizer with acousto-optic variable attenuators
10/10/2002US20020146198 Modular all-optical cross-connect
10/10/2002US20020146007 Optical layer multicasting using a multiple sub-carrier header and a multicast switch with active header insertion via reflective single sideband optical processing
10/10/2002US20020146006 Optical layer multicasting using multiple sub-carrier headers with header detection, deletion, and insertion via reflective single sideband optical processing
10/10/2002US20020145787 System and method for code divilsion multiplexed optical communication
10/10/2002US20020145786 Optical layer multicasting using a multicast switch to effect survivablity and security
10/10/2002US20020145785 Optical layer multicasting using a single sub-carrier header and an optical multicasting switch
10/10/2002US20020145784 Optical wavelength switching system with wavelength selective splitters and combiners
10/10/2002US20020145783 Optical layer multicasting using a multiple sub-carrier header and a multicast switch with active header insertion via single sideband optical processing
10/10/2002US20020145782 Method and apparatus for transferring WDM signals between different wavelength division multiplexed optical communications systems in an optically transparent manner
10/10/2002US20020145781 Modular, re-configurable optical add/drop device for non-blocking, non-service-interrupting service
10/10/2002US20020145780 Simultaneous delivery of 1280 video channels over a WDM passive optical network
10/10/2002US20020145779 Method and apparatus for interconnecting a plurality of optical transducers with a wavelength division multiplexed optical switch
10/10/2002US20020145778 Wavelength division multiplexed optical communication system having a reconfigurable optical switch and a tunable backup laser transmitter
10/10/2002US20020145777 Method for determining interactions between a number of optical channels in a wavelength division multiplexed signal
10/10/2002US20020145776 Wave length associative addressing system for WDM type light packet steering
10/10/2002US20020145775 TDM/WDMA passive optical network
10/10/2002DE10113303A1 Improving and homogenizing data transmission quality in wavelength multiplex system involves inhibiting signal level in at least one channel on detecting mutual non-linear influence
10/10/2002CA2442120A1 Survival dwdm system
10/10/2002CA2441943A1 Polarization mode dispersion compensation in optical transmission media
10/09/2002EP1248392A2 Optical amplifier device and bidirectional wavelength division multiplexing optical communication system using the same
10/09/2002EP1248336A2 Method and apparatus for wavelength conversion
10/09/2002EP1247356A2 System and method for measuring in-band cross-talk in optical communication systems
10/09/2002CN1373950A Device and method for optical transmission of information
10/09/2002CN1373569A Compensation of dispersion in optical fibre transmission system and compensation optical fibre
10/09/2002CN1373381A Bidirectional light amplifier module
10/08/2002US6462877 Drop filter apparatus and method
10/08/2002US6462847 Method and apparatus for free-space optical communication without electro-optical conversion
10/08/2002US6462845 Optical communication device
10/08/2002US6462844 Wavelength-division multiplexing transmission system, a method for designing a loss difference compensator for optical devices used in the wavelength-division multiplexing transmission system, and a method for configuring the wavelength-division multiplexing transmission system
10/03/2002WO2002078279A1 Multiplexer
10/03/2002WO2002030015A3 A wdm communication system utilizing wdm optical sources with wavelengths and light intensity, and method for stabilization thereof
10/03/2002WO2001026263A9 Through-timing of data transmitted across an optical communications system utilizing frequency division multiplexing
10/03/2002US20020141715 High-dispersion fibers for high-speed transmission
10/03/2002US20020141695 Method and apparatus for a dynamic gain equalizer for an erbium doped fiber amplifier
10/03/2002US20020141692 Optical network with dynamic balancing
10/03/2002US20020141453 Flexible add-drop multiplexer for optical telecommunication networks
10/03/2002US20020141408 Optical layer multicasting using multiple sub-carrier headers with header detection, deletion, and insertion via transmit single sideband optical processing
10/03/2002US20020141047 System and method for per-band optical amplification
10/03/2002US20020141046 Optical amplifier device and bidirectional wavelength division multiplexing optical communication system using the same
10/03/2002US20020141044 Optical amplifier and monitoring method of optical amplifier
10/03/2002US20020141042 Optical amplification apparatus
10/03/2002US20020141019 Optical layer multicasting using a single sub-carrier header and a multicast switch with active header insertion via single sideband optical processing
10/03/2002US20020141018 Optical layer multicasting using a single sub-carrier header and a multicast switch with active header insertion
10/03/2002US20020141017 Optical layer multicasting switch
10/03/2002US20020141016 Optical communications apparatus and optical communications system
10/03/2002US20020141015 Optical layer multicasting using a single sub-carrier header and a multicast switch with active header insertion via reflective single sideband optical processing
10/03/2002US20020141014 Optical layer multicasting using a multiple sub-carrier header and multicasting switch
10/03/2002US20020141010 Coupled data and wavelength reference for optical performance monitoring in fiber optic systems
10/03/2002US20020141009 Performance monitoring for multi-port optical devices and systems
10/02/2002EP1246379A1 High-dispersion fibers for digital optical high-speed transmission
10/02/2002EP1246378A2 A modular bidirectional optical amplification system
10/02/2002EP1245997A1 Multi-frequency light source using four-wave mixing
10/02/2002EP1244894A1 Dense wavelength division multiplexer utilizing an asymmetric pass band interferometer
10/02/2002DE10116558A1 Selbstheilende Ringstruktur zur optischen Nachrichtenübertragung im Wellenlängenmultiplex und Add/Drop-Multiplexer hierfür Self-healing ring structure for optical communication wavelength-division multiplexing and add / drop multiplexer this
10/02/2002DE10112805A1 Optical transmission system for use with optical wavelength multiplex signals with optical fibers has improved signal-to-noise behavior
10/02/2002CN1372773A Wireless base station network systems, control station, base station switching method, signal processing method, and handover control method
10/02/2002CN1372734A Tuneable optical filter
10/02/2002CN1372652A Wavelength selective device and switch and method thereby
10/02/2002CN1372400A Integrated intelligent photoelectric mixed router
10/02/2002CN1372398A Node protector for changover ring of wave division multiplexing circuit
10/02/2002CN1372156A Array waveguide raster multiplexer/demultiplexer
10/01/2002US6460182 Optical communication system for transmitting RF signals downstream and bidirectional telephony signals which also include RF control signals upstream
10/01/2002US6459832 Method and apparatus for optical signal transmission using multiple sub-signals of non-uniform bandwidth
10/01/2002US6459829 Multiple wavelength excitation optical multiplexing device, multiple wavelength excitation light source incorporating aforementioned device, and optical amplifier
10/01/2002US6459527 Optical amplifier apparatus and control method thereof, and optical transmission system using optical amplifier apparatus
10/01/2002US6459521 Electroabsorption modulator integrated distributed feedback laser transmitter
10/01/2002US6459516 Dense WDM add/drop multiplexer
10/01/2002US6459515 Method and apparatus for transmitting a WDM optical signal having states of polarization that are pairwise orthogonal
10/01/2002CA2193424C Dispersion tapered optical fibers for use in wdm soliton transmission systems
09/2002
09/30/2002CA2369795A1 Method and apparatus for wavelength conversion
09/27/2002CA2379285A1 Multi-frequency light source
09/26/2002WO2002076000A1 Time slot tunable all-optical packet data demultiplexer
09/26/2002WO2002075999A2 Method and apparatus for interconnecting a plurality of optical transducers with a wavelength division multiplexed optical switch
09/26/2002WO2002075998A1 Method and apparatus for transferring wdm signals between different wdm communications systems in optically transparent manner
09/26/2002WO2002075997A1 Wavelength division multiplexed optical communication system having a reconfigurable optical switch and a tunable backup laser transmitter
09/26/2002WO2002075995A2 Full spectrum optical communication system and methods thereof
09/26/2002WO2002075990A2 Add/drop multiplexer based on a dual core fiber comprising means for optimizing a connection
09/26/2002WO2002075982A1 A compensator for compensation of higher-order chromatic dispersion
09/26/2002WO2002075980A1 Optical data compression device and method
09/26/2002WO2002075975A2 Improvements in optical data receiver systems
09/26/2002WO2002075968A1 Secure wave-division multiplexing telecommunications system and method
09/26/2002WO2002075966A1 Method and apparatus for optical signal processing using subcarrier multiplexed headers
09/26/2002WO2002075410A1 Reconfigurable optical add-drop multiplexers
09/26/2002WO2002075408A1 Grating design
09/26/2002WO2002075403A1 Method and apparatus for providing gain equalizing to an optical signal in an optical communication system
09/26/2002WO2002075371A2 Dwdm ring networks using wavelength selected switches
09/26/2002WO2002075369A2 Modular all-optical cross-connect
09/26/2002WO2002035713A3 Method and system using holographic methodologies for all-optical transmission and reception of high bandwidth signals