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)
06/2002
06/26/2002EP1216532A1 Connection of an add/drop node
06/26/2002EP1216428A2 Dispersion and dispersion slope compensated fiber link
06/26/2002EP0755616B1 Transport network with high transmission capacity for telecommunications
06/26/2002CN1355969A Method and apparatus of utilizing RF/microwave mixing techniques to select given band of optical transmission
06/26/2002CN1355617A Infrared transmission system with autoamtic recognition function
06/26/2002CN1086877C Multi-point to point communication system
06/25/2002US6411821 Telephone regulation system and portable telephone terminal device used in such a system
06/25/2002US6411813 Data communication method and apparatus
06/25/2002US6411750 Distortion analyzer
06/25/2002US6411640 Distributed feedback semiconductor laser with phase shift region having polarization dependency, optical transmitter, and optical communication system using the same
06/25/2002US6411634 Cost-effective high precision wavelength locker
06/25/2002US6411430 Optical amplifier
06/25/2002US6411429 Optical amplifying apparatus, wide-band optical amplifying apparatus, and optical communication system
06/25/2002US6411418 High-performance parallel processors based on star-coupled wavelength division multiplexing optical interconnects
06/25/2002US6411417 Optical equalizer
06/25/2002US6411416 Method and apparatus for minimizing the intensity of a specific frequency component of an optical signal travelling through an optical fiber transmission line to thereby minimize the total dispersion
06/25/2002US6411415 Optical transmission system with a receiver using full optical clock recovery
06/25/2002US6411414 Wavelength division multiplexing wireless optical link
06/25/2002US6411413 Method and apparatus for performing dispersion compensation without a change in polarization and a transmitter incorporating same
06/25/2002US6411410 Wavelength-division multiplexing in passive optical networks
06/25/2002US6411409 Compact diffraction grating based WDM demux
06/25/2002US6411408 Apparatus and method for high repetition rate optical communication over long unrepeated spans
06/25/2002US6411407 Method for providing a bidirectional optical supervisory channel
06/25/2002US6411323 High power marking system achieved through power scaling via multiplexing
06/25/2002US6410902 Optical receiver
06/25/2002CA2247189C Channel selection in an optical tdma network
06/25/2002CA2229683C Optical switching device having recirculating structure and optical switching method therefor
06/22/2002CA2363631A1 Delayed interference wavelength converter and/or 2r regenerator
06/20/2002WO2002049299A2 A line coding scheme for digital communications, transmission method and apparatus
06/20/2002WO2002049267A1 System for secure optical transmission of binary code
06/20/2002WO2002049252A1 High-speed optical data network with improved optical receiver
06/20/2002WO2002049243A2 Optical amplifier having an improved noise figure and noise reduction method
06/20/2002WO2002049241A2 Fiber optic system including digital controller for fiber optic tunable filter and associated methods
06/20/2002WO2002049240A2 True-time delay generator
06/20/2002WO2002049222A2 System and method for communication between remote locations
06/20/2002WO2002048991A2 Method for determining current location-specific information of individuals, transmitting-receiving system, and receiver for carrying out the method
06/20/2002WO2002048771A2 Optical-fiber cable and method for transmitting optical signals, particularly according to wavelength multiplexing technology
06/20/2002WO2002048768A2 Optical fiber with very high negative dispersion slope
06/20/2002WO2002048751A2 Dense wavelength division multiplexing (dwdm) fiberoptic source
06/20/2002WO2002048750A2 Interfacing fiber optic data with electrical power systems
06/20/2002WO2002023744A3 System and method for remotely controlling home appliances
06/20/2002WO2002019576A3 Optical transmission link with low slope, raman amplified fiber
06/20/2002WO2002017515A3 Optical channel monitoring chip
06/20/2002WO2001089128A3 A reconfigurable optical switch
06/20/2002WO2001077715A3 Method and apparatus for optical channel switching in an optical add/drop multiplexer
06/20/2002US20020077071 Spin polarized wave division
06/20/2002US20020076193 System and method of using variable pulses for symbology
06/20/2002US20020076186 Optical fiber for in-line compensation of chromatic dispersion in an optical fiber with postive chromatic dispersion
06/20/2002US20020076185 Chromatic dispersion compensation in an optical fiber transmission system, and a compensation fiber
06/20/2002US20020076183 Dispersion management system for soliton optical transmission system
06/20/2002US20020076182 Distributed optical amplifying apparatus, optical communication station, optical communication system, and optical fiber cable
06/20/2002US20020076176 Identifying fibers of fiber optic cables
06/20/2002US20020076173 Method and apparatus for vertical board construction of fiber optic transmitters, receivers and transceivers
06/20/2002US20020076159 Optical amplifier, optical transmission equipment, optical transmission system, and method thereof
06/20/2002US20020076143 Multi-channel, multi-mode redundant optical local loop having a bus topology
06/20/2002US20020076132 Optical filter for simultaneous single sideband modulation and wavelength stabilization
06/20/2002US20020075906 Signal transmission systems
06/20/2002US20020075549 Light modulation
06/20/2002US20020075547 High-speed optical data network with improved optical receiver
06/20/2002US20020075546 Optical transmission system
06/20/2002US20020075545 Optcal high speed communications for a computed tomography x-ray machine
06/20/2002US20020075543 Optical router for a light-based communication network
06/20/2002US20020075537 Narrow band wavelength division demultiplexer and method of demultiplexing optical signals
06/20/2002US20020075536 Multi-wavelength all-optical regenerators ( mars)
06/20/2002US20020075535 Four fiber ring network optical switching circuit using branched inputs
06/20/2002US20020075534 Method for identifying faults in a branched optical network
06/20/2002US20020075477 Compensation and control of both first-order and higher-order polarization-mode dispersion
06/20/2002US20020074485 Method and system for linearization of MOEMS tunable filter scan
06/20/2002CA2431494A1 Interfacing fiber optic data with electrical power systems
06/20/2002CA2430963A1 A line coding scheme for digital communications, transmission method and apparatus
06/19/2002EP1215832A2 Variable-wavelength optical transmitter with output control and optical communication system thereof
06/19/2002EP1215831A2 Indentifying fibres of fibre optic cables
06/19/2002EP1215830A2 Multi-channel, multi-mode redundant optical local loop having a bus topology
06/19/2002EP1215527A1 Light amplifier using raman amplification and control method thereof
06/19/2002EP1214805A1 Optical transmission system with dispersion compensation units
06/19/2002EP1214804A1 Optical link performance monitoring system in a hybrid fibre coaxial path
06/19/2002EP1214762A1 Method and apparatus for filtering an optical beam
06/19/2002EP1214760A2 Optical transmission systems including optical amplifiers and methods of use therein
06/19/2002EP0916105B1 Optical module for access networks to wide band communication systems and relevant production method
06/19/2002CN2496195Y Light relay equipment
06/19/2002CN2496194Y Fibre-optical Ethernet type feeder automation terminal equipment
06/19/2002CN2496193Y Intelligent electrical tourist guiding apparatus
06/19/2002CN1354840A Laser communication system and method
06/18/2002US6408114 Method of stabilization optical solitons, and equipment for implementing the method
06/18/2002US6407854 Fiber amplifier with fast transient response and constant gain
06/18/2002US6407846 Photonic wavelength shifting method
06/18/2002US6407845 Optical transmitter and optical transmission system
06/18/2002US6407842 Method and apparatus for transmitting a WDM optical signal having nonuniform channel spacings
06/18/2002US6407841 Reduction of collision induced timing jitter by periodic dispersion management in soliton WDM transmission
06/18/2002US6407840 Power-saving infrared-detecting receiving system
06/18/2002US6407839 Optical and programmable fiber optic wavelength add/drop system
06/18/2002US6407838 Reconfigurable multi-add/drop module for optical communications
06/18/2002US6407835 Single site for healing dual optical rings
06/18/2002US6407834 Optical wave network system and method of monitoring a network trouble
06/18/2002US6407402 I2C opto-isolator circuit
06/18/2002US6407376 Optical channel monitoring system with self-calibration
06/18/2002US6405567 Reduced dispersion optical waveguide and methods for fabricating the same
06/13/2002WO2002047409A1 Radio communication base station system including optical advanced base station
06/13/2002WO2002047295A2 Method for supplying persons with updated, location-dependent information by means of acoustic and/or optical information
06/13/2002WO2002047294A2 Optical performance monitoring for dwdm networks