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)
08/1993
08/24/1993US5239402 Push-pull optical receiver
08/24/1993US5239401 Optical modulator for cancellation of second-order intermodulation products in lightwave systems
08/24/1993US5239400 Technique for accurate carrier frequency generation in of DM system
08/24/1993US5239295 Serial light interface which also functions as an ambient light detector
08/24/1993CA1321500C Optical power limiter
08/19/1993WO1993016533A1 Optical signal transmission network
08/19/1993WO1993016514A1 Frequency changing of light signals
08/19/1993DE4204243A1 Optical transmitter for television optical cable network - has laser diode optical source and electro-optical modulator, linearised by feedback from output optical amplifier to modulator for compensation of nonlinearities
08/19/1993CA2129012A1 Optical signal transmission network
08/18/1993EP0556105A1 Circular optical bus and corresponding access method
08/18/1993EP0555973A1 Hybrid pumping arrangement for doped fiber amplifiers
08/18/1993EP0555708A1 Method for the transmission of optical signals
08/18/1993EP0555696A2 Broadband circuit arrangement with impedance matching
08/18/1993EP0346438B1 Optical wireless data communication system
08/17/1993US5237663 Low cost diagnostic/configuration interface
08/17/1993US5237633 Monolithic optoelectronic integrated circuit
08/17/1993US5237442 Device for optical heterodyne detection and mirror system suitable for use in such a device
08/17/1993US5237441 Microprocessor chip incorporating optical signal coupling transceiver
08/17/1993US5237166 Optical atmospheric link apparatus with light path correction
08/12/1993DE4302616A1 Transmitting optical signals via light conductor - using semiconductor laser and compensating for signal distortions in two connected transmission paths by steps acting in opposite sense
08/12/1993DE4203929A1 Opto-electric information transmission system - provides substitute transmitter for every k transmitter to replace any transmitter detected to be faulty
08/12/1993DE4202759A1 Empfangsvorrichtung zum empfang von drahtlos uebermittelten informationen Receiving means for receiving wirelessly sent through information
08/11/1993EP0555063A2 Optical waveform shaping device
08/11/1993EP0554736A2 Digital optical transmission system with a dispersing optical waveguide at the working wavelength
08/11/1993EP0554714A1 Dispersion compensating devices and systems
08/10/1993US5235455 Wide bandwidth differential amplifier
08/10/1993US5235452 Process and switching matrix apparatus for optical transmission of signals by self-heterodyning
08/10/1993CA1321090C Passive optical device
08/05/1993WO1993015566A1 Interferometric, self-homodyne optical receiver and method and optical transmission system incorporating same
08/05/1993WO1993015486A1 Receiver for the reception of wirelessly transmitted information
08/05/1993DE4202863A1 Digital communication system with chromatic dispersive light conductor - propagates binary sequence as bursts of longer and shorter wavelengths giving rise to AM for opto-electronic demodulation and decision
08/04/1993EP0554126A1 Optical amplification repeating system
08/04/1993EP0553994A1 Compact optical pulse source
08/04/1993EP0553460A2 Method and apparatus for measuring polarization mode dispersion in optical devices
08/04/1993EP0553416A1 Method and arrangement for operating optical distribution networks
08/04/1993EP0553193A1 Quasi-soliton communication system
08/04/1993EP0553073A1 Universal remote control system
08/04/1993CN1075038A Method and arrangement for operating optical distribution networks
08/04/1993CA2398045A1 Optical pulse generator
08/03/1993US5233463 Active fiber optical amplifier for a fiber optics telecommunication line
07/1993
07/31/1993CA2087204A1 Method and arrangement for operating optical distribution networks
07/28/1993EP0553029A1 Photoreceiver for frequency modulated optical signals, emitter-receiver, and corresponding optical link
07/28/1993EP0552937A1 Optically-amplifying repeaters
07/28/1993EP0552316A1 Circuit for reducing intermodulation on the use of semiconductor lasers for optical information transmission
07/28/1993CN2139329Y Electronic remotecontrol switch
07/27/1993US5231529 Light amplifier for multi-wavelength signals
07/22/1993WO1993014604A1 Optical processing in asynchronous transfer mode network
07/22/1993WO1993014574A1 Optical transmission system
07/22/1993WO1993014514A1 Vertical-cavity surface emitting laser optical interconnect technology
07/21/1993EP0552080A2 Internal infrared receiver for an automotive vehicle
07/20/1993US5229876 Telemetry for optical fiber amplifier repeater
07/20/1993US5229875 Fault-tolerant fiber optic coupler/repeater for use in high speed data transmission and the like
07/20/1993US5229871 Optical data link for communicating data between a stationary member and a rotating member and an X-ray computer tomography apparatus incorporating the same
07/20/1993US5229599 Amplifying circuit arrangement with a signal source having a hi-ohmic output impedance
07/20/1993US5229593 Apparatus and method for safe, free space laser communication
07/20/1993CA1320532C Monitoring and controlling radiation source stability
07/20/1993CA1320370C Optical crossover network
07/14/1993CN2138368Y Remote control switch of domestic appliances
07/13/1993US5228105 Programmable electro-optic packaging and interconnect system
07/13/1993US5228077 Remotely upgradable universal remote control
07/13/1993US5228043 Direct modulation phase shift keying (dm-psk) transmission system
07/13/1993US5227908 Optical communication apparatus using intensity modulation
07/13/1993US5227907 Method and device for decentralized transmission of data on a transmission line
07/13/1993US5227780 Apparatus with a portable UHF radio transmitter remote for controlling one or more of infrared controlled appliances
07/13/1993US5227624 Optical sensing systems with plural wavelengths and wavelength sensitive sensors
07/13/1993US5227623 Method and apparatus for measuring polarization mode dispersion in optical devices
07/08/1993WO1993013639A1 Printed circuit board apparatus with optical switching
07/08/1993WO1993013617A1 Passive optical network structure with high fault tolerance
07/08/1993WO1993013616A1 Apparatus and method for formatting variable length data packets for a transmission network
07/08/1993WO1993013577A1 Apparatus and method for controlling an extinction ratio of a laser diode over temperature
07/08/1993DE4209672C1 Wavelength measuring device for spectrometry - has sandwich structure of optical waveguides with diffraction gratings of differing constant giving spatial separation of components
07/08/1993CA2126324A1 Printed circuit board apparatus with optical switching
07/08/1993CA2126323A1 Apparatus and method for controlling an extinction ratio of a laser diode over temperature
07/08/1993CA2126322A1 Apparatus and method for formatting variable length data packets for a transmission network
07/07/1993EP0550421A2 Optical shunt device
07/07/1993EP0550309A1 Non-selective photoreceiver for frequency modulated optical signals and optical link using the photoreceiver
07/07/1993EP0550145A1 Low noise, optical amplifier having post-amplification loss element
07/07/1993EP0549972A1 Compensated, SBS-free optical beam amplification and delivery apparatus and method
07/07/1993EP0549862A1 Optical communication network
07/06/1993US5226102 Light-reflection method for transmission-loss measurements in optical fiber lightguides
07/06/1993US5225925 Sensitized erbium fiber optical amplifier and source
07/06/1993US5225922 Optical transmission system equalizer
06/1993
06/30/1993EP0549404A1 Circuit for increasing the dynamic for a channel transmitting a broadband analogue impulse signal and its application to an optical transmission system of several impulse signals
06/30/1993EP0548409A1 Optical transmission system
06/29/1993US5224211 Method and apparatus for non-contact extraction of on-board vehicle trip recorders
06/29/1993US5224184 Optical multi-chip interconnect
06/29/1993US5224183 Multiple wavelength division multiplexing signal compensation system and method using same
06/29/1993US5224128 Method and circuit arrangement for monitoring the operating condition of an electro-optical transmission system
06/29/1993US5224111 Dual fiber drive system
06/29/1993US5223968 First come only served communications network
06/29/1993US5223967 Secure communications system
06/29/1993US5223707 Optically powered remote sensor apparatus with synchronizing means
06/29/1993US5223705 Measurement of an optical amplifier parameter with polarization
06/29/1993CA2006123C Full duplex lightwave communication system
06/24/1993WO1993012624A1 Fibre optic telephone loop network
06/24/1993WO1993012596A1 Optical distribution system
06/24/1993WO1993012591A1 Optical communications system and method for transmitting information through a single optical waveguide
06/24/1993WO1993012585A1 Integrated circuit module with devices interconnected by electromagnetic waves
06/24/1993WO1993012474A1 Time delay beam formation
06/24/1993CA2125696A1 Time delay beam formation