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)
03/1999
03/24/1999EP0827640B1 Laser transmitting or receiving devices and method, for optically transmitting information
03/24/1999EP0799432A4 Integrable fiberoptic coupler and resulting devices and systems
03/24/1999EP0721708B1 Fibre-optic communications transmission method and intermediate repeater therefor
03/24/1999CN2311891Y Tail fibre receptacle
03/24/1999CN1212096A Dispersion compensation in optical fibre transmission
03/24/1999CN1211889A Duplex out-door base station transceiver subsystem utilizing hybrid system
03/24/1999CN1211744A Method and apparatus for automatic compensation of first-order polarization mode dispersion (PMD)
03/23/1999US5887104 Dispersion compensating optical fiber
03/23/1999US5887093 Optical fiber dispersion compensation
03/23/1999US5887091 Bidirectional optical amplifier having flat gain
03/23/1999US5887063 Communication system for portable appliances
03/23/1999US5887050 Repeater apparatus having isolation circuit
03/23/1999US5886809 Reducing wavelength of light pulses, improved light modulation, increased rate of data transmission
03/23/1999US5886804 Optical transmission system employing single mode optical transmission fiber
03/23/1999US5886803 Bilateral optical transmission system and optical transceiver for pulse information
03/23/1999US5886801 Coupling arrangement for coupling optical connections
03/23/1999CA2164778C Ring network communication structure on an optical carrier and reconfigurable node for said structure
03/23/1999CA2160823C A wavelength division multiplexing passive optical network with bi-dir ectional optical spectral slicing
03/18/1999WO1999013656A1 Interconnection system for optical networks
03/18/1999WO1999013606A1 Hitless reconfiguration of a wavelength division multiplexed optical communication network
03/18/1999WO1999013601A1 Multi-protocol dual fiber link laser diode controller and method
03/18/1999WO1999013588A2 Optimizing launch points for dispersion-managed solitons
03/18/1999WO1999013394A2 Method and apparatus for updating subcarrier modulation in a communication network
03/18/1999DE19736695A1 Verfahren und Anordnung zum Übertragen eines mit einem Zusatzsignal modulierten optischen Datensignals über nicht transparente Funktionseinheiten Method and apparatus for transmitting a modulated with an additional signal optical data signal through non-transparent functional units
03/18/1999CA2303071A1 Method and apparatus for updating subcarrier modulation in a communication network
03/17/1999EP0902567A2 Optical amplifying apparatus and method for amplifying a light signal
03/17/1999EP0902566A2 Method for changing a number of channels in an optical communication network
03/17/1999EP0902565A2 Optical communication system with optical amplification
03/17/1999EP0902561A2 Band control circuit
03/17/1999EP0902560A2 Method and apparatus for optimizing dispersion in an optical fiber transmission line in accordance with an optical signal power level
03/17/1999EP0902559A2 Method and device for extracting a timing signal
03/17/1999EP0902558A2 Dispersion compensation apparatus including a fixed dispersion compensator for coarse compensation and a variable dispersion compensator for fine compensation
03/17/1999EP0902557A2 Optical space communication apparatus
03/17/1999EP0902538A2 Article comprising a light-actuated micromechanical photonic switch
03/17/1999EP0902308A1 Optical fiber grating and manufacturing method therefor
03/17/1999EP0901723A2 Method for structuring of digital data which can be transferred in both directions on a passive optical network (pon) in a pon tdma system
03/17/1999EP0901617A1 Eye mask for measurement of distortion in optical transmission systems
03/17/1999EP0901615A1 Method and apparatus for monitoring the state of a liquid-crystal polarization modulator
03/17/1999CN1211360A 光学脉冲源 The optical pulse source
03/17/1999CN1211119A Dispersion compensation apparatus including fixed and variab dispersion compensator
03/17/1999CN1211118A Method and apparatus for optimizing dispersion in optical fiber transmission line in accordance with optical signal power level
03/17/1999CN1211117A Method and device for extracting timing signal
03/17/1999CN1211116A Optical communications apparatus and method
03/16/1999US5884017 Method and system for optical restoration tributary switching in a fiber network
03/16/1999US5883735 Optical amplifying repeater
03/16/1999US5883730 Optical transceiver for multi-directional and multi-wavelength applications
03/16/1999US5883517 Device for locating defects in underwater telecommunication links
03/16/1999CA2147909C Telecommunications distribution frame with tracing
03/16/1999CA2140261C Modem for communication with enclosed electronic equipment
03/16/1999CA2132558C Method and apparatus for reduction of optical communication system impairments
03/11/1999WO1999012297A1 Arrangement and method relating to optical transmission
03/11/1999WO1999012289A1 Opto-coupler based secure computer communication interface
03/11/1999WO1999012288A1 Free-space laser communications error control system
03/11/1999WO1999012287A1 Optical transmission system with coherent optical time domain reflectometry
03/11/1999WO1999012286A1 Optical communication system
03/11/1999WO1999012285A1 Laser communication transceiver
03/11/1999WO1999012268A2 Method and system for modular multiplexing and amplification in a multi-channel plan
03/11/1999WO1998058465A3 A multifiber cabling system
03/11/1999DE19739409A1 Optical transmitter device for optical data transmission
03/11/1999CA2302478A1 Arrangement and method relating to optical transmission
03/10/1999EP0901245A1 Optical decision circuit and use thereof
03/10/1999EP0901244A2 Transmission system with cross-phase and/or self-phase modulation compensation
03/10/1999EP0900489A1 Optical synchronisation arrangement
03/10/1999EP0900485A1 An electronic circuit for receiving and discriminating modulated light and an electronic price display comprising said circuit
03/10/1999EP0900480A1 Control circuit for recording the actuation of an optical key
03/10/1999EP0900407A1 Optical regeneration for optical fibre transmission systems with soliton signals
03/10/1999CN2310424Y Red infrared radio microphone
03/10/1999CN1210595A Optical interface for sealed environments
03/10/1999CN1210404A Optical signal transmission apparatus and optical signal transmission method
03/10/1999CN1210401A Method and facility for equalizing electric signal distorted due to interference in the optical domain
03/10/1999CN1210276A Device for transmitting light using metal-coated optical fiber and method therefor
03/10/1999CN1210275A Apparatus for compensating for dispension of optical fiber on optical line
03/10/1999CA2246473A1 Optical transmission link for wavelength division multiplex transmission, and optical fiber constituting the link
03/09/1999US5880876 Optical transmission system
03/09/1999US5880874 Optical equalizer and optical amplifier and wavelength multiple optical transmission apparatus using optical equalizer
03/09/1999US5880870 Optical modulation system
03/09/1999US5880869 Optical transmitter
03/09/1999US5880868 Infrared backbone communication network having a radio frequency backup channel
03/09/1999US5880867 Infrared backbone communication network having a radio frequency backup channel
03/09/1999US5880863 Reconfigurable ring system for the transport of RF signals over optical fibers
03/09/1999CA2141899C Optical systems and devices using long period spectral shaping devices
03/09/1999CA2139203C Two-way line monitor
03/04/1999WO1999011039A1 Method for compensating bit duration changes in fibreoptic signal transmission systems and retimer for carrying out said method
03/04/1999WO1999010996A1 Method and device for transmitting an optical data signal modulated with an additional signal via non-transparent functional units
03/04/1999WO1999009883A1 System and method for in-vivo hematocrit measurement using impedance and pressure plethysmography
03/04/1999DE19737337A1 Verfahren zur Kompensation von Bitdaueränderungen in faseroptischen Signalübertragungssystemen und Retimer zur Durchführung des Verfahrens Method for compensating Bitdaueränderungen in fiber optic signal transmission systems and retimer for performing the method
03/03/1999EP0899976A2 Dynamic reconfiguration of a wireless network using flexible wavelength multiplexing
03/03/1999EP0899900A2 Verfahren zur optischen Übertragung über ein Lichtwellenleiternetz, sowie optischen Übertragungsnetz
03/03/1999EP0899867A2 FM modulator
03/03/1999EP0899838A1 Optical semiconductor amplifier
03/03/1999EP0899602A2 Method and apparatus of driving an optical modulator to measure, and compensate for, dispersion in an optical transmission line
03/03/1999EP0898798A1 Optical fibre amplifier for wavelength multiplex operation
03/02/1999USH1791 Stimulated Brillouin scattering for fiber-optic links
03/02/1999US5878182 Optical fiber having a low-dispersion slope in the erbium amplifier region
03/02/1999US5877999 Method and apparatus of interrogating a distributed undersea optical surveillance system
03/02/1999US5877882 Optical docking station
03/02/1999US5877881 Optical transmission system
03/02/1999US5877880 Infrared-transmission apparatus having a transmission angle or direction adjustment device
03/02/1999US5877879 Wavelength division multiplexing optical transmission system and optical transmitting device used in the transmission system
03/02/1999US5877878 Surveillance method of optical amplifier-repeater transmission system