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