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)
03/1997
03/26/1997EP0765047A1 Method for measuring a signal transmission delay time station, terminal station and network system to perform this method
03/26/1997EP0765046A2 Broad linewidth lasers for optical fiber communication systems
03/26/1997EP0765045A1 Arrangement for amplifying and combining optical signals, and method for upstream transmission realised therewith
03/26/1997EP0764860A1 Optical delay unit, optical line emulator including such a unit and methods realized by such an optical delay unit and by such an optical line emulator
03/26/1997EP0715787A4 Optical rotary control device using a microprocessor
03/26/1997EP0660993B1 Distributive communications network and method
03/25/1997US5615290 Branch device for optical multiplex system
03/25/1997US5615037 Sub-octave bandpass optical remote antenna link modulator and method therefor
03/25/1997US5615036 Optical network comprising node groups and an analog repeater node unit between two node groups
03/25/1997US5615035 Communications network
03/25/1997US5615034 Optical micro cell transmission system
03/25/1997US5615033 Optical signal transmission apparatus and method
03/23/1997CA2186148A1 Method for measuring a signal transmission delay time, central station, terminal station and network system to perform this method
03/22/1997CA2186149A1 Optical amplifier combiner arrangement and method for upstream transmission realised thereby
03/22/1997CA2185970A1 Structure of a light input/output section of a portable infrared data communication terminal
03/21/1997CA2186041A1 Optical delay unit, optical line emulator including such a unit and methods realized by such an optical delay unit and by such an optical line emulator
03/20/1997WO1997010658A1 Method for independently controlling the wavelength component powers in an optical wavelength division multiplexed transmission system
03/20/1997WO1997010652A2 Optical pulse propagation
03/20/1997WO1997010651A1 System, method and device for monitoring a fiber optic cable
03/20/1997CA2232159A1 Method for independently controlling the wavelength component powers in an optical wavelength division multiplexed transmission system
03/19/1997EP0763912A1 All-optical doubler and soliton regenerator using the doubler
03/19/1997EP0763909A2 Optically restorable WDM ring network using simple add/drop circuitry
03/19/1997EP0763908A1 Optical network
03/19/1997EP0763907A1 Wavelength-division multiplexing telecommunication system and method providing a controlled separation of the output channels
03/19/1997CN2249992Y Interface of communication equipment
03/19/1997CN1145501A Point-type radio controller using infrared rays
03/18/1997US5612973 System employing dissipative pseudorandom dynamics for communications and measurement
03/18/1997US5612968 Redundant multi-wavelength laser arrays
03/18/1997US5612810 Optical receiving apparatus
03/18/1997US5612809 Automated system, and corresponding method, for measuring transmitter rise and fall times of electro-optic modules
03/18/1997US5612808 Soliton optical transmission system
03/18/1997US5612807 Optical dispersion compensation method for shifting a zero dispersion wavelength of an optical fiber to compensate for dispersion in an optical system
03/18/1997US5612805 Add-drop optical spectrum-division multiplexer
03/18/1997CA2098748C Automatic on-line monitoring and optimization of optical network switching nodes
03/13/1997WO1997009803A1 Optical communication system
03/13/1997DE19543387C1 Optical signal transmission device
03/13/1997DE19543386C1 Wideband optical signal transmission device
03/12/1997EP0762766A2 Network apparatus and method for providing two-way broadband communications
03/12/1997EP0762691A2 Method and device for equalising the respective power levels of the channels of a spectrally multiplexed signal
03/12/1997EP0762690A2 Comb splitting system and method for a multichannel optical fiber communication network
03/12/1997EP0762689A2 Optical branching apparatus and tranmission line setting method therefor
03/12/1997EP0762678A2 Laser communication system with temperature controlled transmitter
03/12/1997EP0762677A2 Optical communication system which determines the spectrum of a wavelength division multiplexed signal and performs various processes in accordance with the determined spectrum
03/12/1997EP0762676A2 Integrated-circuit optical network unit
03/12/1997EP0762675A2 Integrated-circuit optical network unit
03/12/1997EP0762674A2 Method and circuit to transmit received signals from an antenna to a base station of a radio system
03/12/1997EP0762673A2 A point-type radio controller
03/12/1997EP0762672A2 Monitoring apparatus for spectrally multiplexed optical telecommunications signal and transmission arrangement equipped with such an apparatus
03/12/1997EP0762657A2 Distributed oversampling analog to digital converter with optical links
03/12/1997EP0762579A1 Multi-frequency optical signal source having reduced distortion and crosstalk
03/12/1997EP0762577A1 Semiconducting emission device with fast wavelength modulation
03/12/1997EP0762576A1 Integrated opto-electronic device
03/12/1997EP0762575A2 Variable wavelength light source using a laser, wavelength control method, optical communication system and optical communication method
03/12/1997EP0762569A2 Method and apparatus for controlling optical amplifier used for optically amplifying wavelength-division multiplexed signal
03/12/1997EP0762169A2 Semiconductor substrate with an opto electronic element and an optical waveguide
03/12/1997EP0762153A2 Optical system
03/12/1997EP0762142A1 Ultrasonic object imaging method and device with optic signal transmission
03/12/1997EP0761071A1 Optical telecommunications network
03/12/1997EP0761050A1 Optical packet processing
03/12/1997CN1145006A High-linear optical fiber cable TV transmission technology
03/11/1997US5611008 Substrate system for optoelectronic/microwave circuits
03/11/1997US5611003 Electro-optical semicoductor modulator, and an optical link including the modulator
03/11/1997US5610947 IR FM modem with flash modulation
03/11/1997US5610750 Optical communications terminal
03/11/1997US5610749 Microcomputer control optical fiber transmission system
03/11/1997US5610748 Optical space communication apparatus sending main signals and an auxiliary signal for controlling the intensity at the receiver
03/11/1997US5610746 Programmable switched delay encoder
03/09/1997CA2185039A1 Device for monitoring a spectrum multiplex telecommunications light signal and transmission installation equipped with such a device
03/09/1997CA2185038A1 Process and system for equalizing the power levels of the channels used by a spectrum multiplex light signal
03/06/1997WO1997008857A1 Burst mode optical digital receiver and repeater
03/06/1997WO1997008856A1 Optical fiber transmission system
03/06/1997WO1997008855A1 Optical satellite feederlinks
03/06/1997WO1997008585A1 Device for cascading optical amplifiers
03/06/1997DE19532679A1 Design for optical (IR) system
03/06/1997CA2230830A1 Optical satellite feederlinks
03/05/1997EP0760184A1 In-line predistorter for linearization of electronic and optical signals
03/05/1997EP0760112A1 Optical switch
03/04/1997US5608827 Multicore fiber connection component and method of making it
03/04/1997US5608825 For optical signal transmission
03/04/1997US5608572 Optical apparatus and a method using the apparatus, which utilizes the occurrence of a change in a both-end voltage of an amplifying region
03/04/1997US5608571 Optical amplifiers
03/04/1997US5608565 Bidirectional optical transmission system
03/04/1997US5608562 Optical communications system with adjustable dispersion compensation
03/04/1997US5608561 Method and system for reducing chirp in an optical cummunication system
03/04/1997US5608560 Method transmitting information encoded in binary form by a train of solitons
03/04/1997CA2061210C Optical transmitting and receiving system incorporating optical circulator
03/04/1997CA2004674C Branched optical fibre network loss detecting apparatus
02/1997
02/27/1997WO1997007605A1 Compensation of dispersion
02/27/1997WO1997007593A1 Method for operating an output of a sensor or converter receiving intermittent energy pulses and device for implementing same
02/27/1997WO1997007529A1 Synchronous detection for photoconductive detectors
02/27/1997CA2226308A1 Method for operating an output of a sensor or converter receiving intermittent energy pulses and device for implementing same
02/26/1997EP0759683A2 Network emulator in asynchronous transfer mode
02/26/1997EP0759672A1 Minimally invasive current sensing circuit
02/26/1997EP0759668A2 Optical TDMA ring network with a central transmission receiving device
02/26/1997EP0759666A2 Optical telecommunication module
02/26/1997EP0759239A1 Apparatus for exchanging data between a central station and a plurality of wireless remote stations
02/26/1997EP0759055A1 Wireless optical communication system with adaptive data rate
02/26/1997CN2248427Y Infrared speech sounds signal transfer receiver
02/26/1997CN1143871A Circuit of duplexing supervisory control modules for use in data transmission system
02/25/1997US5606555 Apparatus and method for operating and constructing an optical TDM/TDMA system having enhanced range