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)
05/1989
05/30/1989US4834483 Fast optical cross-connect for parallel processing computers
05/24/1989EP0317374A2 Laser beam communication between spacecraft
05/24/1989EP0317373A2 Laser beam communication between spacecraft
05/24/1989EP0317352A1 Switched optical network
05/24/1989EP0316660A2 Glass fibre transmission system
05/24/1989EP0316513A2 Single side band modulator
05/24/1989DE3806130A1 Hand-held transmitter for remotely triggering functions controlled by external force
05/24/1989CN1033114A Submarine telecommunication line comprising optical fibers
05/23/1989US4833681 Semiconductor laser wavelength stabilizer
05/23/1989US4833668 Fault detection in a full duplex optical communications system
05/23/1989US4833346 Switched threshold comparator for a fiber-optic receiver
05/23/1989US4832492 Heterodyne michelson interferometer for polarization measurements
05/23/1989US4832434 Network comprising a multitude of optical signal transmission lines connectible to one another via optical mixers
05/23/1989US4832433 Fiber-optic feed network using series/parallel connected light emitting opto-electronic components
05/23/1989US4832432 Optical switching element between two optical guides and optical switching matrix constituted by these switching elements
05/23/1989CA1254421A1 Fourier plane recursive optical filter
05/23/1989CA1254416A1 Adscititious resonator
05/18/1989DE3736244A1 Control device with remotely controllable controllers
05/17/1989EP0316191A2 Dynamic range reduction using mode filter
05/16/1989US4831663 Digital signal transmission/reception using differential polarization modulation/demondulation
05/16/1989US4831662 Fiber optic data transmitting system
05/16/1989US4830444 Optical switch
05/16/1989CA1254268A1 Off axis optical communication system
05/10/1989EP0315512A1 Optical dynamic interconnection device for integrated circuits
05/10/1989EP0315351A2 A passive star coupler
05/10/1989EP0315331A1 Method and apparatus for testing fiber optic hubs
05/10/1989EP0314724A1 Control of optical systems.
05/10/1989EP0314687A1 Computer-aided tomography apparatus
05/10/1989EP0072857B1 Data communication system
05/10/1989CN1032891A Method of transmitting optical signal in both directions through light guide
05/09/1989US4829598 Optical receiver with an optical coupler and an electronic amplifier
05/09/1989US4829597 Satellites to and from submarines
05/09/1989US4829596 Programmable controller with fiber optic input/output module
05/09/1989US4829512 Loop-back control apparatus for a loop network having duplicate optical fiber transmission lines
05/09/1989US4829511 Switched network of optical buses
05/09/1989US4829345 Electronic device having light transmission system
05/09/1989US4828358 Testing in the manufacture, operation, and maintenance of optical device assemblies
05/09/1989CA1253943A1 Optical amplifier
05/03/1989EP0314651A2 Electro-optical transducer assembly
05/03/1989EP0314508A2 Optical communications apparatus
05/03/1989EP0314491A2 Polarization diversity light receiving system
05/03/1989EP0314373A2 Lightwave systems using optical amplifiers
05/03/1989EP0314197A2 A four level frequency shift keying optical communication apparatus
05/03/1989EP0314101A1 Radiofrequency-optical transmission system, especially in the field of satellite communications
05/03/1989EP0314097A2 An optical heterodyne homodyne detection apparatus
05/03/1989EP0313738A2 Method for bidirectionnally transmitting optical signals over optical fibres
05/03/1989EP0313652A1 Apparatus to launch separated mode groups into optical fibers
05/03/1989DE3825126A1 Method for two-way transmission of optical signals via an optical waveguide
05/03/1989DE3822803A1 Method for two-way transmission of optical signals via optical waveguides
05/02/1989US4827116 Square wave modulation circuit for laser diode
05/02/1989US4826314 Echometer for locating defects which affect light conductors
05/02/1989US4826275 Optical communication systems using star couplers
05/02/1989US4826274 Optical coupling arrangements including emitter and detector placed inside of a hollow closed end reflective waveguide
05/02/1989CA1253571A1 Polarization insensitive coherent lightwave detector
04/1989
04/26/1989EP0313389A2 Optical packet switching system
04/26/1989EP0313388A2 Light triggering switch
04/26/1989EP0313383A2 Apparatus and Method for Detecting Mode-Hopping in Semiconductor Lasers
04/25/1989US4825113 Single transmission line bidirectional optical communication system
04/25/1989US4825075 Non-electronic gain control
04/25/1989US4824201 Simultaneous transmission of LED and laser signals over single mode fiber
04/25/1989US4824199 Optical fiber tap utilizing reflector
04/25/1989CA1253210A1 Generation of a sequence of optical pulses and communication system using such pulses
04/25/1989CA1253209A1 Waveguide containing communication and sensing systems
04/19/1989EP0312010A2 Transmitter and receiver device for the transmission of information by light beams
04/19/1989EP0311772A2 Method of operating a switched network of optical buses
04/19/1989EP0208730B1 Optical fibre networks
04/18/1989US4823403 System for optically transmitting data between circuit packs, such as printed circuit boards
04/18/1989US4823402 Agile optical beam steering system
04/18/1989US4823360 Binary data regenerator with adaptive threshold level
04/18/1989US4822125 Optical fiber tap
04/18/1989US4822124 Optical matrix switch
04/18/1989CA1252832A1 Optical pulse receiving circuit
04/18/1989CA1252821A1 Photonic switching
04/13/1989DE3733018A1 Optocoupler
04/11/1989US4820916 Optically powered sensor system
04/11/1989US4820016 Waveguide-containing communications and sensing systems
04/05/1989EP0310174A1 Device for optical heterodyne or homodyne detection of an optical signal beam and receiver provided with such a device
04/04/1989US4819240 Light modulator
04/04/1989US4818896 Optical transmitter driver with current peaking
04/04/1989US4818051 Optical bus
04/04/1989CA1251976A1 Optical communication system
03/1989
03/30/1989DE3731311A1 Combined transmission and reception module (chip) of a bidirectional optical transmission system
03/29/1989EP0191784B1 Optical receiver circuit
03/28/1989US4817208 Fiber optic receiver
03/28/1989US4817207 Optical communication system utilizing phase modulation
03/28/1989US4817206 Optical-fiber transmission system with polarization modulation and heterodyne coherent detection
03/28/1989US4817205 Bimodal optical fiber communication system using graded index fiber
03/28/1989US4817204 Optical communication apparatus and method for telephone supervisory and audio signals
03/28/1989US4817202 Process and apparatus for control and monitoring of installation by transmission of information and of commands by optical means
03/28/1989US4817100 Monitoring and controlling source stability
03/28/1989US4816728 Photoelectric motion limiting control apparatus for a robot mechanism
03/28/1989US4815805 Dynamic range reduction using mode filter
03/28/1989US4815803 Optical signal network with node by-pass switching capability
03/28/1989CA1251845A1 Optical amplification
03/28/1989CA1251831A1 Frequency referencing system and method
03/23/1989WO1989002680A1 Optical distributor
03/23/1989WO1989002590A1 Enhanced system for transmission loss comparison
03/22/1989EP0307960A2 Optical heterodyne detector
03/22/1989EP0307911A2 Signal discriminator
03/22/1989EP0307749A1 Method for optical data transmission between two galvanically separated transmission and reception devices
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