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)
05/2002
05/08/2002CN1084562C Actual reference switching unit and method
05/08/2002CN1084560C Optical transmission system and transmitting terminal station
05/08/2002CN1084558C 光通信系统及光放大器 Optical communication systems and optical amplifiers
05/08/2002CN1084286C 电梯设备 Elevator equipment
05/08/2002CA2360695A1 Optical cross-connecting device
05/07/2002US6385561 Automatic fault location in cabling systems
05/07/2002US6385552 Method for collecting test measurements
05/07/2002US6385379 Broadband stepped index optical fiber
05/07/2002US6385367 Parallel data transmission through segmented waveguides of large diameter
05/07/2002US6385357 Method and apparatus for compensating for higher order paid PMD in a fiber transmission system at the fiber output
05/07/2002US6385356 Method and apparatus for compensating for higher order PMD in a fiber transmission system
05/07/2002US6385206 Communication network and method, and node and exchange node used therein
05/07/2002US6384977 Fabricating optical waveguide gratings
05/07/2002US6384963 Optical communication system with co-propagating pump radiation for raman amplification
05/07/2002US6384962 Method and apparatus to perform automatic gain equalization using raman amplifiers
05/07/2002US6384954 Optical modulator
05/07/2002US6384948 High-sensitivity, high-speed digital optical photoreceiver
05/07/2002US6384947 Two path digital wavelength stabilization
05/07/2002US6384945 Nonlinear temporal grating as a new optical solitary wave
05/07/2002US6384944 Integral transmitter-receiver optical communication apparatus
05/07/2002US6384943 Optical wavelength multiplex transmission method and optical dispersion compensation method
05/07/2002US6384689 Preamplifier for optical receivers
05/07/2002US6384662 Electronic circuit
05/07/2002US6384399 Optical receiving circuit comprising a reflection coefficient setting circuit
05/02/2002WO2002035743A2 Polarization mode dispersion compensating apparatus, system, and method
05/02/2002WO2002035742A1 Use of opa for switching and routing in wdm networks
05/02/2002WO2002035741A2 System and method for optical fiber telecommunication by simultaneous transmission in two optical windows
05/02/2002WO2002035739A1 Numerical analysis method for the nonlinear differential equation governing optical signal transmissions along optical fibers
05/02/2002WO2002035733A1 Method for building up a wireless system for accessing communication networks
05/02/2002WO2002035713A2 Method and system using holographic methodologies for all-optical transmission and reception of high bandwidth signals
05/02/2002WO2002035665A1 Optical transmitter, optical repeater and optical receiver, and optical transmitting method
05/02/2002WO2002035493A2 Method and device for carrying out a signal transfer
05/02/2002WO2002035278A1 Polarisation dependent loss generators
05/02/2002WO2002035271A1 Dispersion compensator
05/02/2002WO2002035270A1 Waveguide fiber dispersion compensating regenerator
05/02/2002WO2002035200A1 Optical pulse generator, and optical pulse testing instrument and method
05/02/2002WO2001088571A3 Multi-channel optical transceiver
05/02/2002WO2001079899A3 Adjustable optical fiber grating dispersion compensators
05/02/2002WO2001067647A3 Method and apparatus for interleaved optical single sideband modulation
05/02/2002WO2001061391A3 Fiber optic device operating at two or more wavelengths
05/02/2002WO2001058039A3 System and method for modularizing the functionality of an electronic device
05/02/2002WO2001050775A3 Method for increasing data transfer capacity of a data communications network, such as a cable television network
05/02/2002WO2000049740A9 Method and apparatus for improving spectral efficiency in fiber-optic communication systems
05/02/2002US20020052960 Automatic assignment of addresses to nodes in a network
05/02/2002US20020052183 Communication system
05/02/2002US20020051619 Distortion analyzer
05/02/2002US20020051611 Optical fiber and optical transmission line using this optical fiber
05/02/2002US20020051510 Phase/frequency comparator
05/02/2002US20020051285 Broadband amplifier and communication system
05/02/2002US20020051284 Light wavelength-multiplexing systems
05/02/2002US20020051279 Optical signal transmission system and magneto-optical modulator designed to establish modulation over wide range for use in the same
05/02/2002US20020051274 Apparatus and method for modulating optical intensity with amplitude noise suppressed by using linear optical modulator
05/02/2002US20020051271 Loss of signal detection circuit for light receiver
05/02/2002US20020051270 Optical fiber communication equipment and its applied optical systems
05/02/2002US20020051269 Reconfigurable over-the-air optical data transmission system
05/02/2002US20020051267 Bidirectionally transmittable optical wavelength division muliplexed transmission system
05/02/2002US20020050557 Photodetector array and optical communication monitor module using the same
05/02/2002EP1202480A2 Bidirectional optical fiber communication system, communications apparatus and optical transceiver
05/02/2002EP1202479A1 Dispersion compensation system
05/02/2002EP1202477A2 Distributed optical amplifying apparatus, optical communication station, optical communication system, and optical fiber cable
05/02/2002EP1202476A1 System and transmitter for transmitting optical data
05/02/2002EP1202475A2 Communication system having radio units connected to optical fibers
05/02/2002EP1202474A1 Point-to-multipoint free-space wireless optical communication system
05/02/2002EP1202105A2 Optical signal transmission system and magneto-optical modulator
05/02/2002EP1202091A2 A polarization-independent, configurable optical multiplexer
05/02/2002EP1202088A1 Dispersion compensating fiber for the compensation of an optical fiber transmission line with positive chromatical dispersion
05/02/2002EP1201099A1 Data compression apparatus and method therefor
05/02/2002EP1201011A2 Gain flattening with nonlinear sagnac amplifiers
05/02/2002EP1200710A1 Communications apparatus
05/02/2002EP1044521A4 A long-haul terrestrial optical fiber link having low-power optical line amplifiers with integrated dispersion compensation modules
05/02/2002EP0782799B1 Efficient optical wavelength multiplexer/de-multiplexer
05/02/2002DE10054552A1 Device for coupling together optical emitting and pick-up elements with optical axes offset against each other maps beams of light for the emitting element's optically active zone onto an optically active zone for a pick-up element.
05/02/2002DE10052700A1 Signal transfer is effected using data set on card, generating electromagnetic wave through integral transmitter
05/02/2002DE10050973A1 Optical wavelength monitor for passive optical components has an oscillator for modulating the optical signals fed to an optical amplifier with a frequency
05/01/2002CN1347512A Optical fiber and optical transmission line comprising same
05/01/2002CN1347210A Code overlapped fast hopping optical CDMA access system
05/01/2002CN1347209A Method and device for controlling received power level in free space optical communication system
05/01/2002CN1347208A One-point-to-multipoint free space radio optical communication system
05/01/2002CN1347207A Telescope for free space radio optical communication system
05/01/2002CN1347161A LED drive circuit and light transmission module therewith
05/01/2002CN1346991A Optical fibre, and dispersion compensator, optical transmission line and optical transmission system using same
05/01/2002CN1084100C Optical multichannel communication system and method
05/01/2002CN1084099C Optical system employing near-incoherent processing for distortion correction
05/01/2002CN1084098C Amplified telecommunication system for wavelength division multiplexing transmissions
05/01/2002CN1084097C Optical time slot interchanger apparatus and method of operation
05/01/2002CN1083988C Optical fibre and coupling method thereof
04/2002
04/30/2002US6381391 Method and system for generating a broadband spectral continuum and continuous wave-generating system utilizing same
04/30/2002US6381385 Polarization mode dispersion emulation
04/30/2002US6381248 Network architecture uses mini-fiber node and mini-coaxial node technologies to provide bi-directional broadband communications
04/30/2002US6381069 Fiber Bragg grating optical filter with a constant group-delay response in its working band
04/30/2002US6381064 Method for gain equalization, and device and system for use in carrying out the method
04/30/2002US6381056 Dark pulse generation and transmission
04/30/2002US6381055 Transceiver positioning in free-space optical networks
04/30/2002US6381054 Optical pulse transmission system, optical pulse transmitting method, and optical pulse detecting method
04/30/2002US6381049 Multi-port optical multiplexer element
04/30/2002US6381048 Wavelength division multiplexed system having reduced cross-phase modulation
04/30/2002US6381047 Passive optical network using a fabry-perot laser as a multiwavelength source
04/30/2002US6381045 Method and apparatus for bidirectional communication over a single optical fiber
04/30/2002US6380871 System for and method of searching for targets in a marine environment
04/30/2002US6380844 Interactive remote control toy