| 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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| 03/15/1994 | US5295013 Optical receiver of direct detection type |
| 03/15/1994 | US5295012 Ring-type communication network |
| 03/15/1994 | US5295011 Optical duplexer for bidirectional optical information transmission |
| 03/15/1994 | US5294930 Optical RF stereo |
| 03/15/1994 | CA2032089C Optimized wavelength-division-multiplexed lightwave communication system |
| 03/11/1994 | CA2105218A1 Wide-angle, high-speed, free-space optical communications system |
| 03/09/1994 | EP0586285A1 Emitting-receiving optical head for optical data transmission and switching circuit for the head |
| 03/09/1994 | EP0586103A2 Measurement of a parameter of an optical amplifier |
| 03/09/1994 | EP0586075A1 Loudspeaker systems |
| 03/09/1994 | EP0585557A1 Non-linear burst mode data receiver |
| 03/08/1994 | US5293547 Method and apparatus to compensate for distortion in optical transmission systems |
| 03/08/1994 | US5293545 Optical source with reduced relative intensity noise |
| 03/08/1994 | US5293264 Transmission system for the polarization-insensitive transmission of signals |
| 03/08/1994 | US5293263 Electro-optical modulator which provides optical bias stabilization during operation |
| 03/08/1994 | US5293260 Optical repeater off-state supervisory method and device therefor |
| 03/03/1994 | DE4229099A1 Bus system for digital optical signals - has two or more bus lines, linking main station with peripheral stations having input and output interface elements |
| 03/03/1994 | DE4228733A1 Teilnehmersystem mit mehreren durch elektrische Geräte gebildeten Teilnehmern Subscriber system with multiple parties formed by electrical devices |
| 03/02/1994 | EP0585126A2 Efficient bi-directional optical fiber amplifier for missile guidance data link repeater |
| 03/02/1994 | EP0585088A2 Article comprising rare earth or transition metal doped optical fiber |
| 03/02/1994 | EP0585087A1 Ranging method for use in TDMA systems on tree-and-branch optical networks |
| 03/02/1994 | EP0585030A1 Infrared link between a transceiver and an external device |
| 03/02/1994 | EP0585005A1 Fault tolerant optical amplifier arrangement |
| 03/02/1994 | EP0584647A1 Optical transmitter |
| 03/02/1994 | EP0584634A1 Circuit for amplitude modulation of a laser drive signal |
| 03/02/1994 | EP0584464A1 Infrared ray receiving and transmitting system |
| 03/02/1994 | EP0298098B1 Ultra high-speed light activated microwave switch/modulator using photoreactive effect |
| 03/02/1994 | CA2101978A1 Optical head for transmitting and receiving data through an optical system and switching circuit for said head |
| 03/01/1994 | US5291326 Optical signal transmission system, particularly optical cable television system, with monitoring and service-channel facilities |
| 03/01/1994 | US5291324 Comparison apparatus with freespace optical interconnections between optoelectronic integrated circuits |
| 03/01/1994 | CA2004596C Device for connecting optical lines to a wideband telecommunications exchange |
| 03/01/1994 | CA1327413C Optical communications network |
| 02/25/1994 | CA2104650A1 Ranging method for use in tdma systems on tree-and-branch optical networks |
| 02/24/1994 | DE4227914A1 Cordless IR telephone subscriber's installation - has telephones connected via IR repeaters and channels for analog speech signals and digital data pilot channel |
| 02/24/1994 | DE4227098A1 Amplitude modulation circuit for laser drive signal - has differential amplifiers respectively connected to second pole of operating voltage source via voltage controlled current sources |
| 02/24/1994 | DE4227097A1 Amplitude modulation circuit for laser drive signal - has first and third voltage-controlled current sources connected to first differential amplifier, and second current source connected to second |
| 02/24/1994 | DE4227079A1 Multi-pin electrical connector with facility for individual pin removal - has pins located as snap fit into guide carrier in main body with connecting wires passing through a sealing unit |
| 02/23/1994 | EP0584013A1 Predistortion circuit for a semi-conductor optical source |
| 02/23/1994 | EP0583798A1 Optical communication system having an improved protection line switching mechanism |
| 02/23/1994 | EP0583331A1 Optoelectronic component |
| 02/23/1994 | EP0583304A1 Method and arrangement to convert an optical data signal from a multimode fibre to a corresponding signal into a single mode fibre |
| 02/23/1994 | EP0583303A1 Optical clock extraction. |
| 02/23/1994 | CN1082789A 级联式光子滤波器 Photon cascade filter |
| 02/23/1994 | CN1082717A A method of discriminating optical waveguides |
| 02/22/1994 | US5289558 Switching assembly for glass fiber cables of the telecommunication and data technology |
| 02/22/1994 | US5289550 Modulated light source with a linear transfer function and method utilizing same |
| 02/22/1994 | US5289480 Triple-function semiconductor laser amplifier |
| 02/22/1994 | US5289306 For data communication between terminal devices |
| 02/22/1994 | US5289302 Access method for optical local area network systems |
| 02/22/1994 | US5288992 Wide angle, narrow band optical filter |
| 02/22/1994 | CA2101031A1 Fault tolerant optical amplifier arrangement |
| 02/22/1994 | CA2011954C Optical modulator |
| 02/17/1994 | WO1994004007A2 Telecommunications switch architecture |
| 02/17/1994 | WO1994003987A1 Process and circuitry for electric compensation of signal distortion caused by laser chirp and fibre dispersion |
| 02/17/1994 | DE4226838A1 Optical broadband information transmission system for communications - transmits range of TV signals via multiplexing central station over optical line to subscriber units |
| 02/16/1994 | EP0583186A1 Control unit for stabilising the ouput power of laser diodes |
| 02/16/1994 | EP0582998A1 System for transmitting a beam in the air |
| 02/16/1994 | EP0582878A1 Circuit for compensation of non-linear distortion in a transmission system |
| 02/16/1994 | EP0582874A1 Circuit for frequency-dependent compensation of second order distortion in a transmission system |
| 02/16/1994 | EP0582587A1 Vertical metallically loaded polarization splitter and polarization-diversified optical receiver. |
| 02/16/1994 | CN2156623Y Multiplex infrared remote switch |
| 02/15/1994 | US5287422 Integrated type optical node and optical information system using the same |
| 02/15/1994 | US5287375 Apparatus for driving a laser diode array |
| 02/15/1994 | US5287366 Binary modulation of injection lasers |
| 02/15/1994 | US5287316 Optical FIFO buffer |
| 02/15/1994 | US5287212 Optical link |
| 02/15/1994 | US5287211 Multipath optical transmission system controller |
| 02/15/1994 | US5287210 Motorized television stand |
| 02/15/1994 | US5286966 Frequency stabilized light source |
| 02/15/1994 | CA2032624C Method and apparatus for stabilizing oscillation frequency separation among a plurality of laser devices |
| 02/15/1994 | CA2020759C Erbium-doped fiber amplifier coupling device |
| 02/10/1994 | DE4325528A1 Switch arrangement - has opto couplers for bidirectional signal transmission |
| 02/10/1994 | DE4225713A1 Path dependence compensation of multimode fibre=optic sensor - measuring total intensity and forming relative intensity using quotient of central and peripheral brightness of far and near fields |
| 02/09/1994 | EP0582406A1 Pump laser control circuit for an optical transmission system |
| 02/09/1994 | EP0582275A1 Method for generating a distortion-free frequency modulated signal and device for implementing such a method |
| 02/09/1994 | EP0582061A1 Coherent optical multichannel system |
| 02/09/1994 | EP0581888A1 Optical communications system and method |
| 02/08/1994 | US5285512 Fiber optic transceiver with integrated coupler |
| 02/08/1994 | US5285306 Optical communication system with a fiber optic amplifier |
| 02/08/1994 | US5285305 Optical communication network with passive monitoring |
| 02/08/1994 | US5285080 Method of selective light detection |
| 02/08/1994 | CA2011048C Optical drop-and-insert apparatus |
| 02/08/1994 | CA2000997C Heterodyne receiver for coherent optical communication |
| 02/03/1994 | WO1994002998A1 Apparatus for linearization of optic modulators using a feed-forward predistortion circuit |
| 02/03/1994 | WO1994002997A1 Free space optical communication system |
| 02/03/1994 | WO1994002901A1 Modem for communicating with enclosed electronic equipment |
| 02/03/1994 | WO1994002873A1 Optical radiation devices |
| 02/03/1994 | WO1993025020A3 Optical communication system |
| 02/03/1994 | CA2144960A1 Apparatus for linearization of optic modulators using a feed-forward predistortion circuit |
| 02/02/1994 | EP0581525A1 Suppression of brillouin scattering in lightwave transmission system |
| 02/02/1994 | EP0581459A2 Automatic on-line monitoring and optimization of optical network switching nodes |
| 02/02/1994 | EP0581142A1 Apparatus and method of operation of receiving diodes |
| 02/02/1994 | EP0581138A1 Fail-safe automatic shut-down apparatus and method for high output power optical communications system |
| 02/02/1994 | EP0580990A1 Optical transmitter for digital signals |
| 02/02/1994 | EP0580905A1 Optical radiation devices |
| 02/02/1994 | EP0580889A1 Method for the compensation of the non-linear distortion of an electro-optical converter in an optical telecommunications system |
| 02/01/1994 | US5283687 Amplifier for optical fiber communication link |
| 02/01/1994 | US5283679 Communications process, transmitter and receiver for analog signals |
| 02/01/1994 | US5283678 Metallic access in a fiber remote terminal |
| 01/26/1994 | EP0580567A1 Receiver for an optical transmission network |
| 01/26/1994 | EP0580497A1 Data transmission system, especially optical system, for modification of transmission parameters depending on bit error rate measured at the receiver |