Patents for H04J 14 - Optical multiplex systems (27,009) |
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03/26/2002 | US6363181 Method and apparatus for wavelength-division multiplexing |
03/26/2002 | US6362903 Use of higher order modulation techniques to transmit information on passbands of a dispersion-limited fiber link |
03/26/2002 | US6362759 Control circuit, and system using same |
03/26/2002 | CA2357342A1 Method of optically transmitting sdh or sonet signals |
03/26/2002 | CA2257805C Fault-tolerant optical routing switch |
03/26/2002 | CA2235480C Photo signal amplification transmission system |
03/21/2002 | WO2002023770A1 Method of power control in an optical communication system |
03/21/2002 | WO2002023281A1 System for combining multiple low power lasers |
03/21/2002 | WO2002023245A2 Tunable add/drop filter |
03/21/2002 | WO2001097425B1 Beam combiner |
03/21/2002 | WO2001093464A8 Device and method for monitoring signal direction in an optical communications network |
03/21/2002 | WO2001090807A3 Acousto-optic devices utilizing longitudinal acoustic waves |
03/21/2002 | WO2001067648A3 Method and apparatus for interleaved optical single sideband modulation |
03/21/2002 | WO2001058204A3 Transparent optical switch |
03/21/2002 | US20020034360 Wavelength dispersion compensator and optical transmission line |
03/21/2002 | US20020034358 Optical communication network |
03/21/2002 | US20020034357 Amplifier unit for a wavelength-division multiplex transmission system and also a method for amplifying optical signals |
03/21/2002 | US20020034354 Optical cross-connector |
03/21/2002 | US20020034197 High speed linking module |
03/21/2002 | US20020033995 Gain equalizer which includes a plurality of optical filters for equalizing the gain of an optical amplifier |
03/21/2002 | US20020033994 Wavelength selector and converter and a photonic switching matrix incorporating it |
03/21/2002 | US20020033977 System for flexible multiple broadcast service delivery over a WDM passive optical network based on RF block-conversion of RF service bands within wavelength bands |
03/21/2002 | CA2420888A1 Method of power control in an optical communication system |
03/20/2002 | EP1189377A1 Device for Wavelength selection and conversion, and photonic matrix switch comprising the same |
03/20/2002 | EP1189376A2 Wavelength division multiplex optical transmitter, wavelength division multiplex optical receiver, optical transmission device, and optical transmission system |
03/20/2002 | EP1189367A1 System and method for determining wavelength dependent information in an optical communication system |
03/20/2002 | EP1016229B1 Optical amplifier with gain adjustment |
03/19/2002 | US6360042 Tunable optical fiber gratings device |
03/19/2002 | US6359907 Method 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 |
03/19/2002 | US6359730 Amplification of an optical WDM signal |
03/19/2002 | US6359726 Wavelength division multiplexing optical amplifier with function of gain-equalizing and optical communication system |
03/19/2002 | US6357913 Add/drop acousto-optic filter |
03/19/2002 | CA2181078C Wavelenght division multiplexing optical transmission network |
03/19/2002 | CA2060098C Frequency multiplex optical fibre communication process and network |
03/14/2002 | WO2002021746A2 Communication system |
03/14/2002 | WO2002021731A2 Opticl fibre for to-the-home distribution network |
03/14/2002 | WO2002021191A1 Linear optical beam translator for optical routing |
03/14/2002 | WO2001080592A3 Transmission of data |
03/14/2002 | WO2001067136A3 A ring interconnection architecture |
03/14/2002 | WO2001065704A3 Optical wavelength router based on polarization interferometer |
03/14/2002 | WO2001058203A3 Linear optical transmission system with failure protection |
03/14/2002 | WO2001053888A3 Optical attenuator having geometrically biased branching waveguide structure |
03/14/2002 | US20020031146 Method of communicating data in communication systems |
03/14/2002 | US20020031085 Communication network system and communication network node for use in the same communication network system |
03/14/2002 | US20020030878 Modulator and method of modulating optical carrier with clock signal before or after the carrier is modulated with data pulse |
03/14/2002 | US20020030877 Method and apparatus for interleaved optical single sideband modulation |
03/14/2002 | US20020030876 Multiplex optical communication system |
03/14/2002 | US20020030869 Optical cross connect unit, optical add-drop multiplexer, light source unit, and adding unit |
03/14/2002 | US20020030868 Monitoring of signal wavelengths in optical fiber |
03/14/2002 | US20020030866 Method and apparatus for wavelength multiplexing/demultiplexing |
03/14/2002 | US20020030864 Control of optical connections in an optical network |
03/14/2002 | CA2357246A1 Modulator and method of modulating optical carrier with clock signal before or after the carrier is modulated with data pulse |
03/13/2002 | EP1187276A2 Optical amplifier for wide band raman amplification of wavelength division multiplexed (WDM) signal lights |
03/13/2002 | EP1186131A2 Method and system for increasing a number of information channels carried by optical waveguides |
03/13/2002 | CN2482283Y Optic wavelength division multiplex device |
03/13/2002 | CN1339891A Light add and drop multiplexer for multi-wave length adaptive light power equalization |
03/13/2002 | CN1339890A System and method for transfering multiple protocol formats in optical wave communication network |
03/13/2002 | CN1339889A Optic transmission system |
03/12/2002 | US6356692 Optical module, transmitter, receiver, optical switch, optical communication unit, add-and-drop multiplexing unit, and method for manufacturing the optical module |
03/12/2002 | US6356555 Apparatus and method for digital data transmission using orthogonal codes |
03/12/2002 | US6356386 Method and apparatus for stabilizing transient control in amplified optical networks |
03/12/2002 | US6356371 Method and a circuit for concatenating binary information, and use in optical packet transmission |
03/12/2002 | US6356368 Optical supervisory transmission signal control device |
03/07/2002 | WO2002019588A1 An optical communication network |
03/07/2002 | WO2002019587A1 Optical communication system |
03/07/2002 | WO2002019574A1 All-optical regenerator for wavelength-division multiplexed signals |
03/07/2002 | WO2002019572A1 Method for starting up optical communication system, method for extending/reducing channels, and computer readable recorded medium |
03/07/2002 | WO2002018985A2 Optical filter having a shaped filter function |
03/07/2002 | WO2002018983A2 Wide range tunable optical filter |
03/07/2002 | WO2001056212A3 Digital signal processing optical transmitter |
03/07/2002 | US20020028039 4-port wavelength selective router |
03/07/2002 | US20020027703 Optical amplifier |
03/07/2002 | US20020027693 Parallel optical transmission/reception module |
03/07/2002 | US20020027692 Bit-phase synchronized optical pulse stream local generator |
03/07/2002 | US20020027685 Bidirectional add/drop multiplexer |
03/07/2002 | US20020027684 Optical transmission of error control data |
03/07/2002 | US20020027683 Optical device, terminal apparatus, and system for wavelength division multiplexing |
03/07/2002 | DE10039951A1 Method for compensating cross-phase modulation in optical fiber amplifiers, involves obtaining control signal from optical wave-length multiplex signal and controlling the phase-modulator to which wave-length multiplex signal is supplied |
03/07/2002 | CA2423780A1 Wide range tunable optical filter |
03/06/2002 | EP1185018A1 Optical communication system |
03/06/2002 | EP1185017A1 An optical communication network |
03/06/2002 | EP1185007A2 Method, device, and system for processing optical signals |
03/06/2002 | EP1185005A1 Method for narrowing the wavelength spacing of a wavelength monitor in a laser system |
03/06/2002 | EP1184949A2 Electroabsorption modulator integrated distributed feedback laser transmitter |
03/06/2002 | EP1183898A2 Fiber optic smart switch |
03/06/2002 | EP1183809A1 Optical slicing network utilizing a high extinction ratio polarization beamsplitter |
03/06/2002 | EP1183808A1 Apparatus and methods for maintaining balanced communication channels with increasing service demands |
03/06/2002 | EP1183801A1 A highly scalable modular optical amplifier based subsystem |
03/06/2002 | EP1183798A1 Method and apparatus for optical transmission control using compensating channels |
03/06/2002 | EP1183797A1 Dual homing for dwdm networks in fiber rings |
03/06/2002 | EP0972363B1 Method for transmitting additional data signals and a useful data signal by means of optical links |
03/06/2002 | CN1338837A Device, method and system for transmitting frames |
03/06/2002 | CN1338832A ATM passive optical network dual system and method, optical path terminal and network unit |
03/06/2002 | CN1080491C Dark pulse generation and transmission |
03/05/2002 | US6353496 Wavelength division multiplexing erbium doped fiber amplifier which outputs constant power per channel and amplifying method thereof |
02/28/2002 | WO2002017534A1 A fiber optic terminal system employing subcarrier multiplexing for high capacity optical data transport |
02/28/2002 | WO2002017533A2 Optical transmission systems including optical protection systems, apparatuses, and methods |
02/28/2002 | WO2002017526A2 Optical communications network with protection paths |
02/28/2002 | US20020025110 Wide range tunable optical filter |
02/28/2002 | US20020025109 Optical wavelength division multiplexed system using wavelength splitters |