| 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) |
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| 01/08/1992 | CN1057721A Unit for amplifying signals of light in optical fiber transmission lines |
| 01/07/1992 | CA1294071C Spread spectrum optical communication system with heterodyne detection |
| 01/07/1992 | CA1294012C Optical transmitter driver with current peaking |
| 01/07/1992 | CA1293998C Survivable network |
| 01/07/1992 | CA1293997C Polarization insensitive optical communication device utilizing optical preamplification |
| 01/07/1992 | CA1293996C Amplification of optical signals optical control tone |
| 01/02/1992 | EP0463634A2 Wavelength-time-space division switching system |
| 01/02/1992 | EP0463569A2 Semiconductor optical amplifying apparatus |
| 01/02/1992 | EP0463504A2 Optical duplexer for bidirectional optical communication |
| 01/02/1992 | EP0463390A2 Electro-optical connectors |
| 01/02/1992 | EP0463051A1 Optical transmission system. |
| 01/01/1992 | CN1057556A Radio communication system, particularly cellular mobile-radio system |
| 12/31/1991 | US5077817 Fiber star amplifier coupler and method of making same |
| 12/31/1991 | US5077816 Fiber embedded grating frequency standard optical communication devices |
| 12/31/1991 | US5077814 Optical transmission line for use in an optical communication system |
| 12/31/1991 | US5077729 Testing optical fiber links |
| 12/31/1991 | US5077728 Frequency division multiple access network |
| 12/31/1991 | US5077619 High linearity optical transmitter |
| 12/31/1991 | US5077483 Network topology for reduced blocking and photonic system implementation thereof |
| 12/31/1991 | CA1293828C P c m signal coding |
| 12/31/1991 | CA1293827C Optical communication system with a stabilized "comb" of frequencies |
| 12/31/1991 | CA1293772C Testing in the manufacture, operation and maintenance of optical device assemblies |
| 12/27/1991 | EP0462102A1 A method for detecting external influence on an optical cable. |
| 12/26/1991 | WO1991020161A1 An ear protector |
| 12/26/1991 | WO1991020139A1 Enhanced infrared-connected telephone system |
| 12/26/1991 | WO1991020138A1 Fiber optic communication of three-level electronic signals |
| 12/26/1991 | WO1991020113A2 Fiber optics system |
| 12/24/1991 | US5075794 Reflective opitical feedback element |
| 12/24/1991 | US5075793 Apparatus for detecting intensity-modulated light signals |
| 12/24/1991 | US5075792 Low power optical transceiver for portable computing devices |
| 12/24/1991 | US5075791 Method and apparatus for achieving two-way long range communication over an optical fiber |
| 12/24/1991 | US5074631 Optical modulator |
| 12/19/1991 | DE4018783A1 Optical beam splitter for polarisation independent heterodyne receiver - has rectangular, thin TE-TM beam splitting plate divided by 3dB splitting platelet |
| 12/18/1991 | EP0461937A2 CATV signal distribution system using optical fibres |
| 12/18/1991 | EP0461711A2 Device for optical heterodyne detection and mirror system suitable for use in such a device |
| 12/18/1991 | EP0461710A1 Device for optical heterodyne detection and optical component suitable for use in such a device |
| 12/18/1991 | EP0461380A2 Data transmission radio system, particularly cellular radio system |
| 12/18/1991 | EP0263845B1 Improvements relating to communication systems |
| 12/17/1991 | US5073983 Optical communication system with reduced distortion |
| 12/17/1991 | US5073982 Apparatus for connecting multiple passive stars in a fiber optic network |
| 12/17/1991 | US5073981 Optical communication by injection-locking to a signal which modulates an optical carrier |
| 12/17/1991 | US5073979 Reflector for infrared remote control transmitter |
| 12/17/1991 | US5073331 Modulation method for use in a semiconductor laser and an apparatus therefor |
| 12/17/1991 | CA1293298C Optically powered sensor system |
| 12/16/1991 | CA2044667A1 Catv signal distribution system using optical fibers |
| 12/12/1991 | WO1991015907A3 Bit and frame synchronizing unit for an access node in an optical transmission device |
| 12/11/1991 | EP0460626A2 Optical data transmission system |
| 12/11/1991 | EP0460398A1 Passive optical telecommunication system |
| 12/11/1991 | CN2090513U Laser remote primer |
| 12/10/1991 | US5072439 High speed opto-electronic crossbar switch |
| 12/10/1991 | CA1293026C Polarization diversity optical receiver for coherent optical communication |
| 12/09/1991 | WO1992001346A2 Multimedia high speed network |
| 12/09/1991 | CA2083147A1 Multimedia high speed network |
| 12/04/1991 | EP0459758A2 Network adapter having memories configured as logical FIFOs to transmit and receive packet data |
| 12/04/1991 | EP0459756A2 Fiber distributed data interface network |
| 12/04/1991 | EP0459685A2 Multi-stage optical amplifier |
| 12/04/1991 | EP0459289A1 Optical transceiver |
| 12/04/1991 | EP0458813A1 Two-way optical communications system. |
| 12/04/1991 | EP0458782A1 Star-shaped network for data communication between stations. |
| 12/03/1991 | US5070516 Method and apparatus for reducing noise on a signal encodable on a plurality of predetermined levels |
| 12/03/1991 | US5069522 Optical fiber link card |
| 12/03/1991 | US5069521 Optical transmission apparatus |
| 12/03/1991 | US5069520 High-speed modulator of the polarization of an optical carrier |
| 12/03/1991 | CA1292776C Optical receiver circuit and method |
| 11/28/1991 | WO1991018485A1 Code word recognition unit and its use |
| 11/28/1991 | WO1991018455A1 A multilevel coherent optical system |
| 11/28/1991 | WO1991018434A1 Erbium-doped fibre amplifier with shaped spectral gain |
| 11/28/1991 | DE4016400A1 Sensor position monitor e.g. for sliding door installation - has stationary and mobile units interconnected by infrared links for data transmission and message relaying |
| 11/28/1991 | DE4016359A1 Passive optical communications system for telecommunications network |
| 11/28/1991 | DE4016331A1 Brillouin optical fibre amplifier for optical heterodyne receiver - uses feedback of light from pumped laser eliminating need for second local laser |
| 11/27/1991 | EP0458704A1 FIFO buffer |
| 11/27/1991 | EP0458256A1 Unit for amplifying signals of light in optical fiber transmission lines |
| 11/27/1991 | EP0458252A1 Long range bidirectional optical fiber communication link |
| 11/27/1991 | EP0458251A2 Single wavelength bidirectional optical fiber communication link |
| 11/27/1991 | EP0457863A1 Transmission device with an optical transmission path. |
| 11/27/1991 | CN1014950B System for connecting optical lines to wideband telecommunications exchanger |
| 11/26/1991 | US5068916 Coordination of wireless medium among a plurality of base stations |
| 11/26/1991 | US5068863 Compensating circuit for high power lasers |
| 11/26/1991 | US5068854 Error detection for fiber distributed interfaced optic link |
| 11/26/1991 | US5068847 Fiber optic network architecture having data feedback for monitoring communications thereon |
| 11/26/1991 | US5068749 Electronically tunable polarization-independent liquid crystal optical filter |
| 11/26/1991 | US5068545 Digital/frequency input for industrial control applications |
| 11/26/1991 | CA1292551C Optical switch |
| 11/22/1991 | CA2040755A1 Single wavelength bidirectional optical fiber communication link |
| 11/21/1991 | EP0457349A2 Fiber optic amplifier |
| 11/21/1991 | EP0457306A2 Method and device to read and write a data memory driven by a microprocessor, especially for a measuring or counting recording device |
| 11/19/1991 | US5066148 Bi-directional optical transmission system for RF electrical energy |
| 11/19/1991 | US5066139 Coupler verification test circuit |
| 11/19/1991 | CA1292283C Reflection transmitter and receiver means for a bidirectional lightwaveguide communications system |
| 11/19/1991 | CA1292282C Optical communication systems using fabry-perot cavities |
| 11/19/1991 | CA1292281C Optical fiber communication system comprising mode-stripping means |
| 11/14/1991 | WO1991016851A1 Heart beat monitoring |
| 11/13/1991 | EP0456462A2 Electronic display device, display setting apparatus and display system |
| 11/13/1991 | EP0456365A2 Optical hybrid for coherent detection systems |
| 11/13/1991 | EP0455910A2 Distortion compensation by adaptively setting a decision threshold, for fibre optic systems |
| 11/13/1991 | EP0151188B1 Method for directly transmitting images |
| 11/13/1991 | CN1014756B Driver circuit for driving light emitting element |
| 11/12/1991 | US5065456 Method and apparatus for enhancing the enable response of a laser diode used in an optical communication system |
| 11/12/1991 | US5065455 Optical atmospheric link system |
| 11/12/1991 | CA1292040C Semiconductor optical amplifier with shortened gain recovery time |