Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › 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
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)
09/1990
09/25/1990CA1274629A1 Operating a multiple-access optical network
09/22/1990CA2012688A1 Laser drive and control device for an optical fibre link between a subscriber and a telecommunication exchange
09/20/1990WO1990010921A1 A method for detecting external influence on an optical cable
09/20/1990WO1990010884A1 Improved fiber optic distribution system
09/20/1990DE3907236A1 Vorrichtung zur verfuegungstellung von ueber lichtwellenleiter uebertragene daten fuer datenendgeraete Device to disposal by provision of Optical Fiber by transmitted data system for datenendgeraete
09/19/1990EP0387990A1 Method and apparatus for enhancing the enable response of a laser diode used in an optical communication system
09/19/1990EP0387870A2 Method for controlling polarizations of signal lights in an optical frequency division multiplex coherent communication system
09/19/1990EP0387832A1 Optical modulator
09/19/1990EP0387416A2 Integrated light-receiving semiconductor device
09/19/1990EP0387383A1 Self-sufficient light-operating element
09/19/1990EP0228435B1 Optical communication system
09/18/1990US4957362 Method and apparatus for electro-optical phase detection
09/18/1990US4957348 Optical transceiver with multiple communication modes
09/18/1990US4957339 Optical communication system, particularly in the subscriber area
09/17/1990WO1990010979A1 Optical transmission system
09/12/1990EP0386958A1 Dual rail dilated switching networks
09/12/1990EP0386736A1 Optical communications system
09/11/1990US4956877 Optical fiber reflective signal modulation system
09/11/1990US4956834 Coherence multiplexed optical signal transmission system and method
09/11/1990US4955685 Active fiber for optical signal transmission
09/07/1990WO1990006498A3 Loss detection
09/05/1990EP0385697A1 Apparatus for and method of generating a comb of optical teeth of different wavelengths
09/05/1990EP0385649A1 Fibre optic transmission system
09/05/1990EP0385644A1 Clock distribution arrangement for time-multiplexed switched optical network
09/05/1990EP0385430A2 Optical drop-and-insert apparatus
09/04/1990US4955086 Reflection transmitter and receiver means for a bidirectional light waveguide communications system
09/04/1990US4955081 Light communication system
09/04/1990US4955026 Frequency locking radiation beam
09/04/1990US4955025 Silica resonance cavity, diode laser pump
09/04/1990US4955014 Broadband optical communication system, particularly in the subscriber area
09/04/1990US4955013 Operating a multiple-access optical network
09/04/1990US4954786 Optical amplifying device
09/04/1990US4953947 Dispersion transformer having multichannel fiber
09/04/1990US4953939 Optical fibre transmission systems
09/04/1990US4953929 Fiber optic connector assembly and adapter for use therewith
09/03/1990WO1990010326A1 Apparatus for and method of generating a comb of optical teeth of different wavelengths
09/01/1990CA2010875A1 Fibre optic transmission system
08/1990
08/31/1990CA2007828A1 Clock distribution arrangement for time-multiplexed switched optical network
08/29/1990EP0384205A2 Input stage for a broadband optical receiver
08/29/1990EP0384116A2 Multiple-cavity optical filter using change of cavity length
08/29/1990CN1044987A Light-reflection method of determining transmission losses in optical fiber lightguides
08/28/1990US4953155 Current summed optoelectronic crossbar switch
08/28/1990US4952795 Current limiter and an optical receiver making use thereof
08/28/1990US4952016 Optical power limiter
08/28/1990US4952010 Optical space switch
08/23/1990WO1990009710A1 Star-shaped network for data communication between stations
08/23/1990WO1990009641A1 Optical neural network and method
08/23/1990DE3905107A1 Device for the direct insertion of optical waveguide cables between two communications interfaces
08/22/1990EP0383557A1 Network clock synchronisation
08/22/1990EP0383390A1 Optical coherent receiver
08/21/1990US4950887 Optical fiber interface
08/21/1990US4950044 Optical semiconductor device for demultiplexing wavelength multiplexed lights
08/17/1990WO1990009709A1 Two-way optical communications system
08/17/1990CA2010015A1 Optical coherent receiver
08/16/1990EP0382430A1 Optical interconnection network
08/16/1990EP0382417A2 Full duplex lightwave communicating system
08/16/1990EP0382243A2 Optical transmission line system
08/16/1990EP0381786A1 Optical data transmission device
08/16/1990EP0208729B1 Optical networks
08/14/1990US4949397 Detector for optically transmitted television signals
08/14/1990US4948969 Photodetector having convex window for shielding electromagnetic wave and electrostatic induction noises
08/14/1990US4948960 Dual mode light emitting diode/detector diode for optical fiber transmission lines
08/14/1990US4948218 Optoelectronic device for an optical communication system
08/14/1990CA1272792A1 Optical system
08/14/1990CA1272791A1 Optical coupling assembly
08/09/1990WO1990009708A1 Optical interconnection network
08/08/1990EP0381371A2 A burst mode digital data receiver
08/08/1990EP0381370A2 Improved packaging techniques for optical transmitters/receivers
08/08/1990EP0381341A2 FSK optical communication system
08/08/1990EP0381102A1 Fibre-optical communication network with frequency division multiplexing
08/08/1990EP0380779A2 Method for determining the optical losses of optical fibres by reflected light
08/07/1990US4947459 Fiber optic link noise measurement and optimization system
08/07/1990US4947458 Optical transmitter utilizing a bistable distributed feedback semiconductor laser
08/07/1990US4947134 Lightwave systems using optical amplifiers
08/07/1990US4947033 Voltage/frequency converter and its use in an optical wave guide transmission arrangement
08/07/1990US4947032 Detection circuit for a light-sensitive element which is substantially insusceptible to ambient light level
08/07/1990US4946244 Fiber optic distribution system and method of using same
08/07/1990US4945806 Fiber optic musical instrument digital interface
08/02/1990DE4001898A1 Optical data transmitter with temp.-independent power control - utilises additional resistance in parallel with binary-signal-modulated laser diode to maintain min. bias current
08/01/1990EP0380341A2 Optical communication system
08/01/1990EP0380243A2 Distributed bragg reflector laser for frequency modulated communication systems
08/01/1990EP0380242A2 Distributed feedback laser for frequency modulated communication systems
08/01/1990EP0380126A2 Wavelength-division switching system for optical frequency-shift keying signals
08/01/1990EP0380078A2 Photoelectric switch
08/01/1990CA2008797A1 Light-reflection method for transmission-loss measurements in optical fiber lightguides
07/1990
07/31/1990US4945541 Method and apparatus for controlling the bias current of a laser diode
07/31/1990US4945531 Optical wavelength-division multiplex transmission system with an optical filter for spontaneous emission noise
07/31/1990US4945229 Fiber optic receiver and transceiver
07/31/1990US4945227 Avalanche photodiode quenching circuit
07/31/1990US4945225 Signal discriminator
07/26/1990WO1990008433A1 Fiber-based receiver
07/25/1990EP0379026A2 Laser diode transmitter having a protection and alarm circuit
07/24/1990US4943134 Coupler
07/18/1990EP0378368A2 Optical coupler with a fibre link between transceivers
07/18/1990EP0378148A2 Optical space communication apparatus
07/18/1990EP0378087A2 Wideband optical transmission system, especially for the subscriber region
07/18/1990EP0377948A2 An optical amplifying device
07/18/1990EP0236378B1 Process for evaluating pulses of electromagnetic radiation
07/18/1990CN1044002A Electrooptical arrangement for remotely controlling electronic apparatus
07/17/1990US4942623 Device and method for modal separation and combination in an optical fiber intrusion detection system
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