Patents
Patents for H04B 10 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication (73,125)
09/2000
09/19/2000US6122084 High dynamic range free-space optical communication receiver
09/19/2000US6122083 Mobile communication system having a small base station and equipment for its system
09/19/2000US6122044 Process for locating by reflectometry a fault on an optical transmission link and location device applying such process
09/19/2000US6121893 Remote control receiving system
09/19/2000US6120190 Spatially variable bandpass filter monitoring and feedback control of laser wavelength especially in wavelength division multiplexing communication systems
09/19/2000CA2046737C Subscriber interface for a fiber optic communications terminal
09/18/2000CA2266281A1 Optical intersatellite communications system
09/18/2000CA2266155A1 Multimedia satellite constellation network
09/18/2000CA2266153A1 Multi-media satellite
09/18/2000CA2266132A1 Satellite communication system
09/17/2000CA2300851A1 Gain equalization for optical fiber distribution network
09/17/2000CA2299132A1 A method to perform central control, a line terminator and an element controller realizing such a method and a tree-like network including such a line terminator and an element controller
09/16/2000CA2301235A1 Tunable optical filter
09/15/2000CA2301338A1 Optical apparatus for selecting a predetermined item of information from a coherent optical signal
09/15/2000CA2301337A1 Optical-optical device
09/14/2000WO2000054447A1 Multiple-wavelength optical communication system with optical amplifiers
09/14/2000WO2000054439A1 Optical communication system
09/14/2000WO2000054413A2 Atmospheric optical communication
09/14/2000CA2364429A1 Multiple-wavelength optical communication system with optical amplifiers
09/13/2000EP1035750A2 Signal transmission system
09/13/2000EP1035680A2 Signal transmission system
09/13/2000EP1035679A2 Signal transmission system
09/13/2000EP1035672A2 Transparent optical communication network
09/13/2000EP1035671A2 Dispersion Compensating optical transmission line and system
09/13/2000EP1035670A2 Optical amplifier arranged to offset raman gain
09/13/2000EP1035669A1 Optical signal quality monitor
09/13/2000EP1035668A2 Optical signal transmission system
09/13/2000EP1034629A1 Method for adjusting the level of optical signals
09/13/2000EP1034628A1 Spatially variable filter laser wavelength monitoring/control
09/13/2000EP1034627A1 Crosstalk reduction in a bidirectional optical link
09/13/2000EP1034626A1 Method for improved wireless optical communication and frames for use in a wireless optical communication system
09/13/2000CN2396576Y 光纤有源天线 Fibre optic active antenna
09/13/2000CN1266566A Device for receiving send signal and for sending optical beam and use thereof
09/13/2000CA2300568A1 Directional coupler and mach-zehnder modulator using such coupler
09/12/2000US6118566 Optical upconverter apparatuses, methods, and systems
09/12/2000US6118565 Coherent optical communication system
09/12/2000US6118563 Methods and apparatus for reducing four-wave mixing
09/12/2000US6118562 Wavelength aligning apparatus using arrayed waveguide grating
09/12/2000US6118561 Wavelength division multiplexing optical transmitter and wavelength division multiplexing-demultiplexing optical transmission-reception system
09/12/2000US6118523 High-resolution zero-dispersion wavelength mapping in single mode fiber
09/12/2000US6118131 Directional optics for a system for directing a laser beam toward an active area
09/12/2000CA2213309C Ribbon array optical switch and optical switch architecture utilizing same
09/12/2000CA2209185C Method and device for the generation of ultrashort optical pulses
09/08/2000WO2000052865A1 Optical networks
09/08/2000WO2000052855A1 Method and system for optimising the pulse form of an amplitude modulated optical signal
09/08/2000WO2000052854A1 Cable television system with delay compensation in reverse path
09/08/2000WO2000052485A1 Telemetry system and method for emi susceptibility testing of motor vehicles
09/08/2000WO2000029887A8 Codes, methods, and apparatus for optical encoding and decoding
09/08/2000WO2000026686A3 System and method for infrared communication
09/08/2000CA2363753A1 Telemetry system and method for emi susceptibility testing of motor vehicles
09/07/2000DE19906813A1 Optical add-drop-multiplexer
09/06/2000EP1033882A1 Input position measuring instrument and entertainment system
09/06/2000EP1033842A2 Wavelength division multiplexed optical communication system having reduced short wavelength loss
09/06/2000EP1033841A2 Reconfigurable add/drop for optical fiber communication systems
09/06/2000EP1033835A2 Optical central office
09/06/2000EP1033834A2 Wavelength division multiplexing optical amplifier and optical communication system
09/06/2000EP1033833A2 Supervision method of optical fibre operation
09/06/2000EP1033794A1 Optical gain equalizer, and optical amplifier and wavelength-division multiplex transmitter both comprising the optical gain equalizer
09/06/2000EP1033003A2 Method and apparatus for operation, protection, and restoration of heterogeneous optical communication networks
09/06/2000EP1032989A1 Sampling of electronic signals using optical pulses
09/06/2000CN2395462Y Learning type multipurpose remote controller
09/05/2000US6115615 Cellular communication network and its communication method
09/05/2000US6115588 Radio selective calling receiver having infrared data transmission
09/05/2000US6115517 Optical communication network apparatus and optical switching network
09/05/2000US6115516 Wavelength division multiplex branching unit and method of operation for optical transmission systems
09/05/2000US6115419 Adaptive digital beamforming receiver with π/2 phase shift to improve signal reception
09/05/2000US6115403 Directly modulated semiconductor laser having reduced chirp
09/05/2000US6115375 Multistage optical packet switching apparatus using self electro-optic-effect devices
09/05/2000US6115178 Optical device
09/05/2000US6115174 Optical signal varying devices
09/05/2000US6115173 Optical amplifying transmission system and optical amplifier
09/05/2000US6115170 Light modulation system for use in a data transmission scheme and method
09/05/2000US6115163 Apparatus and method for reception of optical burst
09/05/2000US6115162 Double side band, carrier suppressed modulated coherent fiber optic link
09/05/2000US6115161 Computer with wide angle infrared communication equipment
09/05/2000US6115160 Infrared transceiver having a movable transmitter shutter
09/05/2000US6115158 Optical communication system and optical transmitting device applied thereto
09/05/2000US6115156 Demultiplexer device for wavelength-division multiplexed optical fiber communication
09/05/2000US6115155 System for dealing with faults in an optical link
09/05/2000US6115154 Method and system for detecting loss of signal in wavelength division multiplexed systems
09/05/2000CA2026658C Asynchronous optical communication system_
09/04/2000CA2298323A1 System and method for secure multiple wavelength communication on optical fibers
09/04/2000CA2295407A1 Simplified 1 + 1 optical protection
08/2000
08/31/2000WO2000051354A1 Digital optical transmitter for processing externally generated information in a catv reverse path
08/31/2000WO2000051278A1 Wdm ring transmission system having amplified dropped channels
08/31/2000WO2000051271A1 All-optical analog fm optical receiver
08/31/2000WO2000051270A1 Digital optical transmitter with removable digital module
08/31/2000WO2000051269A1 High order spatial mode optical fiber
08/31/2000WO2000051268A1 High order spatial mode transmission system
08/31/2000WO2000051256A1 Bus driver with data dependent drive strength control logic
08/31/2000WO2000050944A1 Dispersion compensation by using tunable nonlinearly-chirped gratings
08/31/2000WO2000050935A1 Optical transmission line, negative dispersion optical fiber used for the optical transmission line, and optical transmission system comprising optical transmission line
08/31/2000WO2000025459A3 Digital optical transceiver
08/31/2000DE19910041A1 Frequency response adjustment method for optical data signal transmission
08/31/2000CA2364322A1 Dispersion compensation by using tunable nonlinearly-chirped gratings
08/31/2000CA2363959A1 Bus driver with data dependent drive strength control logic
08/31/2000CA2353815A1 Wdm ring transmission system having amplified dropped channels
08/31/2000CA2326131A1 Optical transmission line, negative dispersion optical fiber used for the optical transmission line, and optical transmission system comprising optical transmission line
08/30/2000EP1032145A2 Automatic gain switching-type burst optical signal receiving circuit
08/30/2000EP1032143A2 Optical simulcast network with centralized call processing