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)
09/2003
09/23/2003US6625337 Wavelength-division multiplex optical signal processor and a method of regenerating a wavelength-division multiplexed optical signal
09/23/2003US6624926 Optical amplifier with pump light source control for raman amplification
09/23/2003US6624925 Optical amplifier employing an active doped unitary amplifier
09/23/2003US6624924 Bit-rate and format insensitive all-optical clock extraction circuit
09/23/2003US6624918 Voltage control of optical receiver bandwidth
09/23/2003US6624917 Optical power adjustment circuits for parallel optical transmitters
09/23/2003US6624916 Signalling system
09/23/2003US6624000 Method for making a monolithic wavelength converter assembly
09/23/2003US6623188 Dispersion tolerant optical data transmitter
09/23/2003US6623187 Wireless optical communication system and wireless optical communication method
09/23/2003US6623185 Loss of signal detector for low-level optical signals
09/23/2003US6623179 Electro-optical data transfer module
09/23/2003CA2324808C Semiconductor laser module
09/22/2003CA2421542A1 System and method for optical transmission
09/21/2003CA2423240A1 Method and apparatus for chromatic dispersion compensation
09/19/2003CA2422259A1 Polarisation insensitive optical amplifiers
09/18/2003WO2003077591A1 Infrared steering method and infrared steering system
09/18/2003WO2003077449A1 Dynamic broadband optical equalizer
09/18/2003WO2003077448A1 Dynamic polarization mode dispersion emulator
09/18/2003WO2003077447A1 Digital regulated light receive module and regulation method
09/18/2003WO2003077216A1 Optical output device, relay device, and program controlling optical output device.
09/18/2003WO2003076990A1 Optical module formed on a planar lightguide circuit including a waveguide optical amplifier
09/18/2003WO2003076979A2 Split-band depressed-profile amplifier and system
09/18/2003WO2003061164A3 Dispersion compensation in optical communications systems
09/18/2003WO2003050981A3 Method and an apparatus for optical wdm signal transmission using raman amplification
09/18/2003WO2003028403A3 All-optical switching sites for an agile optical network
09/18/2003WO2003003637A3 Method, system, and apparatus for wireless wavelength division multiplexing
09/18/2003WO2002091636A3 Terrestrial optical communication network of integrated fiber and free-space links which requires no electro-optical conversion between links
09/18/2003WO2002075983A3 Polarisation mode dispersion generator
09/18/2003WO2002073838A3 System and method for polarisation mode dispersion compensation
09/18/2003WO2002030013A3 Private network link verification procedure in free space optical communication network
09/18/2003US20030175038 Signal receiver having light guide for guiding light transmitted from remote control
09/18/2003US20030175037 Control of an optical modulator for desired biasing of data and pulse modulators
09/18/2003US20030175036 Methods and apparatus for spectrally efficient optical modulation
09/18/2003US20030175035 Light pipe extension between a mobile device and an imaging device
09/18/2003US20030175034 Method and apparatus for optical information transmission
09/18/2003US20030175033 Optical transmission system, optical transmitter and methods thereof
09/18/2003US20030175032 Planar device having an IIR tapped delay line for multiple channel dispersion and slope compensation
09/18/2003US20030175031 Free space optics communication apparatus and free space optics communication system
09/18/2003US20030174987 Dispersion compensation optical fiber and optical transmission line using same
09/18/2003US20030174980 Optical transmission system
09/18/2003US20030174957 Optical filter device for temperature dependence control
09/18/2003US20030174938 Wide band Raman amplifiers
09/18/2003US20030174926 Optical circuit
09/18/2003US20030174921 Transmission of orthogonal circular polarizations on a fiber
09/18/2003US20030174743 Absolutely calibrated periodic filters and sources
09/18/2003US20030174728 Multiplex transmission system for reporting alert information to the conversion device on the receiving side without using a dedicated frame
09/18/2003US20030174713 Arrangement and method relating to switched telecommunications
09/18/2003US20030174696 Link quality agent
09/18/2003US20030174392 Circuit and method for safety shutdown of an optical amplifier
09/18/2003US20030174390 Optical amplifier and optical communication system including the same
09/18/2003US20030174389 Optical transmission system using Raman amplification
09/18/2003US20030174387 Tunable multimode laser diode module, tunable multimode wavelength division multiplex raman pump, and amplifier, and a system, method, and computer program product for controlling tunable multimode laser diodes, raman pumps, and raman amplifiers
09/18/2003US20030174386 Optical communication system
09/18/2003US20030174381 Transmission wavelength characteristics variable optical element, and wavelength characteristics variable apparatus, optical amplifier, optical transmission system, and control method of transmission wavelength characteristics, using same
09/18/2003US20030174311 Method for estimation of chromatic dispersion in multichannel optical network spans and chromatic dispersion monitor therefore
09/18/2003US20030174023 Analog summing and differencing circuit, optical receiving circuit, optical transmitting circuit, automatic gain control amplifier, automatic frequency compensation amplifier, and limiting amplifier
09/18/2003CA2479067A1 Dynamic polarization mode dispersion emulator
09/18/2003CA2478416A1 Communication system and split-bnd amplifying apparatus using a depressed profile fiber amplifier
09/18/2003CA2411792A1 Absolutely calibrated periodic filters and sources
09/17/2003EP1345468A2 Data transmission in gigabit ethernet passive optical network
09/17/2003EP1345358A2 Optical wireless communication system
09/17/2003EP1345347A2 Optical transmission system, optical transmitter and methods thereof
09/17/2003EP1345346A2 System and method for assigning traffic to wavelengths in optical networks
09/17/2003EP1345345A1 Wide band raman amplifiers
09/17/2003EP1345343A2 Raman amplified dispersion compensating modules
09/17/2003EP1345342A1 An optical transmitter for transmitting signals with high data rates, an optical transmission system and a method therefor
09/17/2003EP1345341A2 Optical transceiver for data transfer and control applications
09/17/2003EP1345340A2 Structure and apparatus for a very short haul, free space, and fiber optic interconnect and data link
09/17/2003EP1345294A2 Tunable multimode pump source for a Raman amplifier
09/17/2003EP1345274A2 Photo-detecting device, photo-emitting device and optical wireless communication device
09/17/2003EP1345051A2 Transmission of orthogonally circularly polarized beams on a fiber
09/17/2003EP1344362A2 Wdm communication system using dmpsk and optical filtering
09/17/2003EP1344361A2 Method and system to identify and characterize nonlinearities in optical communications channels
09/17/2003EP1344337A2 Optically amplified receiver
09/17/2003EP1344336A2 Method and apparatus for suppressing relative intensity noise (rin) and improving transmission signals in an optical transmission system
09/17/2003EP1344320A2 A line coding scheme for digital communications, transmission method and apparatus
09/17/2003EP1198909B1 Electrical insulation device with optocoupler for bidirectional connecting lines
09/17/2003EP1183799B1 Regenerator with reconstitution of an optical signal carrier wave
09/17/2003EP1095472B1 Method and device for executing control and monitoring measurements in optical transmission paths
09/17/2003EP1095432B1 Optical fibre and optical fibre device
09/17/2003CN2574306Y On-line automatic turn-on and turn-off Raman amplifier
09/17/2003CN2574305Y Multipath light transceiving module
09/17/2003CN2574304Y Module capable of widening infrared ray transceiving range
09/17/2003CN2574068Y Photoswitch
09/17/2003CN1442976A Low cost wave band multiplex/demultiplex device
09/17/2003CN1442975A Optical transmitter optical transmission system and method used for high data speed transmission signal
09/17/2003CN1442968A 光发射机 Optical Transmitter
09/17/2003CN1442967A Photo transmitting device
09/17/2003CN1121626C Controller for controlling light changeable attenuator
09/16/2003US6621958 Athermalization and pressure desensitization of diffraction grating based WDM devices
09/16/2003US6621945 Modulation scheme for NRZ signals and transmitter
09/16/2003US6621626 Modular optical amplifier structure for highly dense interleaved WDM systems
09/16/2003US6621625 Optical node including three-stage optical amplifier with automatic gain and level control
09/16/2003US6621622 Optical amplifier and optical amplifier arrangement with reduced cross phase modulation
09/16/2003US6621620 Optical amplification system using Raman amplification
09/16/2003US6621617 Displaced-bias interferometer-detection (DB/ID) modulation
09/16/2003US6619867 Optical transmission system
09/16/2003US6619866 Dynamic range extended for optical transmitters
09/16/2003US6619865 Optical frequency division multiplexing network