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)
01/1998
01/13/1998US5708673 Optical signal transmitter
01/13/1998US5708277 Optically coupled device with high current protection
01/13/1998US5707139 Vertical cavity surface emitting laser arrays for illumination
01/08/1998WO1998000960A1 Echo canceller system
01/08/1998WO1998000943A1 Intelligent fiberoptic receivers and methods of operating and manufacturing the same
01/08/1998WO1998000936A1 Device for receiving optical signals with a light guide
01/08/1998WO1998000935A1 Device for transmitting optical signals between a moving part and a stationary part relative thereto
01/08/1998WO1998000934A1 Optical transmission device for a hybrid fibre-radio system
01/08/1998WO1998000933A1 Remote controller
01/08/1998WO1998000932A1 Method and apparatus for locating a transmitter of a diffuse infrared signal within an enclosed area
01/08/1998WO1998000893A1 Intelligent fiberoptic transmitters and methods of operating and manufacturing the same
01/08/1998WO1998000802A1 Communication system for transmitting accounting instructions
01/08/1998DE19627156A1 Optical amplifier arrangement for network of more than two light guides
01/08/1998DE19625872A1 Vorrichtung zur Übertragung optischer Signale An apparatus for transmitting optical signals
01/08/1998DE19625870A1 Vorrichtung zum Empfang optischer Signale mit einem lichtleitenden Gegenstand Device for receiving optical signals with a light-conducting object
01/08/1998CA2258778A1 Echo canceller system
01/07/1998EP0817416A2 Method for sub-carrier multiplexed optical signal transmission and apparatus for same
01/07/1998EP0817415A2 Wavelength-division-multiplexing optical amplifier device
01/07/1998EP0817410A2 Optical network terminal, optical network and switch for same
01/07/1998EP0817409A2 Method and device for the generation of ultrashort optical pulses
01/07/1998EP0817408A1 Receiver for optical digital signal transmission system
01/07/1998EP0817407A2 Transmitter unit, transmitting device and optical transmission system for optical transmission of analog electrical signals
01/07/1998EP0815659A1 Optical network
01/07/1998EP0815484A1 Apparatus and methods for routing of optical beams via time-domain spatial-spectral filtering
01/06/1998USH1702 Wideband fiber-optic signal processor
01/06/1998US5706277 Method for changing-over to standby for a transmission device for the bidirectional transmission of digital signals and arrangement for carrying out the method
01/06/1998US5706125 Optical signal amplifying circuit
01/06/1998US5706124 Rare earth element-doped optical fiber amplifier
01/06/1998US5706118 Optical transmission method and optical transmission apparatus
01/06/1998US5706117 Drive circuit for electro-absorption optical modulator and optical transmitter including the optical modulator
01/06/1998US5706116 Drive circuit optical modulator and optical transmitter
01/06/1998US5706115 Optical wireless communication method and apparatus
01/06/1998US5706114 Polyhedral integrated and free space optical interconnection
01/06/1998US5706113 Phase lock loop circuit using optical correlation detection
01/06/1998US5706112 Light signal remote control apparatus and light signal level controlling method
01/06/1998US5706111 Optical communications network
01/06/1998US5706110 Method and equipment for saving power in infrared data transmission
01/06/1998CA2025521C Dynamically responsive catv system with shared fiber optic link
01/02/1998DE19625817A1 Optische Sendeeinrichtung für ein hybrides Faser-Funk System An optical transmitter for a hybrid fiber-radio system
01/02/1998DE19623479A1 Optoelectronic transmitter for optical communications system
12/1997
12/31/1997WO1997050204A1 Optical tdma network
12/31/1997WO1997050203A1 Optical transmission systems using optical amplifiers and wavelength division multiplexing
12/31/1997WO1997050200A1 Digital signal transmitting device
12/31/1997WO1997050199A2 Dual rate, burst mode, radiation hardened, optical transceiver
12/31/1997WO1997050192A1 Remote control apparatus for power line communications system
12/31/1997WO1997050185A2 Method and system for equalizing pmd using incremental delay switching
12/31/1997WO1997050157A1 Optical amplifier modules
12/31/1997WO1997045972A3 Method for structuring of digital data which can be transferred in both directions on a passive optical network (pon) in a pon tdma system
12/31/1997CN1169222A All-optical processing in communications system
12/30/1997US5703929 Wireless-wireline communication selection mechanism resident in craftsperson's portable test and communications device
12/30/1997US5703711 For optically amplifying an input optical signal to produce optical signals
12/30/1997US5703707 High capacity switching matrix
12/30/1997US5703706 Spectral modification through phase modulation with spatial extent
12/30/1997US5703682 Method for monitoring fiber optic cable
12/30/1997US5703506 Signal processing method
12/30/1997US5703409 Error counting circuit
12/30/1997CA2034797C Optical amplifier with bent, single-mode active fiber
12/30/1997CA2027816C Fiber optic telecommunication system employing continuous downlink, burst uplink transmission format with preset uplink guard band
12/30/1997CA2024271C Optical fiber interface
12/29/1997EP0814629A2 Optical fiber cross connect with active routing for wavelength multiplexing and demultiplexing
12/29/1997EP0814578A2 Optical frequency division multiplexing transmitter
12/29/1997EP0814343A2 Optical head of optical beacon
12/29/1997EP0813797A2 Linear multi-output optical transmitter system
12/29/1997EP0813776A1 Method and apparatus for conditioning optical solitons
12/29/1997EP0813760A1 Wavelength control of data-modulated lasers
12/26/1997CA2205705A1 Arrangement for reducing insertion loss impairment of optical amplifiers
12/24/1997WO1997049205A1 Optical receiver
12/24/1997WO1997049204A1 Laser communication device
12/24/1997WO1997036220A3 Optical transmission of serial data
12/24/1997CN1168581A Method and apparatus for monitoring and correcting individual wavelength channel parameters in multi-channel wavelength division multiplexer system
12/24/1997CN1168580A Apparatus for infrared channel and method therefor
12/24/1997CN1168579A Switchable fiber optic device for fiber transmission system and components thereof
12/23/1997USRE35697 Unit for amplifying light signals in optical fiber transmission lines
12/23/1997US5701195 Light signal reception apparatus having an improved light surge eliminating function
12/23/1997US5701194 Amplified telecommunication system for wavelength-division multiplexing transmissions capable of limiting variations in the output power
12/23/1997US5701189 Wireless data communication system and method using an electroluminescent panel
12/23/1997US5701188 Chromatic dispersion compensator and chromatic dispersion compensating optical communication system
12/23/1997US5701186 Optical cable TV system
12/23/1997US5701133 Cascaded multiplying current mirror driver for LED's
12/23/1997US5700949 Optical receiver calibration based on a relative intensity noise standard
12/23/1997CA2092298C Passive optical network
12/23/1997CA2092297C Passive optical network
12/23/1997CA2062605C Broad linewidth lasers for optical fiber communication systems
12/18/1997WO1997048197A3 Communication system with multicarrier telephony transport
12/18/1997WO1997048197A2 Communication system with multicarrier telephony transport
12/18/1997WO1997048196A1 Low power microcellular wireless drop interactive network
12/18/1997WO1997048193A1 Fibre optic transmission with fibre amplifiers and supervisory signals
12/18/1997WO1997048082A1 Displaying data transmitted by radio
12/17/1997EP0813349A2 Optical transmission system
12/17/1997EP0813272A2 Wavelength-changeable light source capable of changing wavelength of output light, optical communication network using the same and wavelength control method for controlling wavelength of output light of the same
12/17/1997EP0813097A1 Digital optical signal shaping device and its use for modifying digital optical signals
12/17/1997EP0812476A1 Arrangement and method in a telecommunication system for optical voltage multiplicationing in an integrated circuit
12/16/1997US5699468 Bragg grating variable optical attenuator
12/16/1997US5699373 Oscillation polarization selective semiconductor laser and optical communication system using the same
12/16/1997US5699178 Procedure and device for distribution and reception of wavelength reference in optical multichannel network
12/16/1997US5699177 Communication method in network system for performing information transmission among terminal equipments using light beams of a plurality of wavelengths, terminal equipment used in the method and network system using the method
12/16/1997US5699176 Upgradable fiber-coax network
12/16/1997US5699081 Apparatus and method for automatically provisioning power on a per channel basis in a communications transmission system
12/16/1997US5698452 Method of making integrated detector/photoemitter with non-imaging director
12/16/1997CA2071493C Passive optical network