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)
11/1994
11/23/1994EP0625834A1 Method and arrangement for arranging an interception-proof optical link
11/23/1994EP0625295A1 Optical signal transmission network
11/23/1994CN2183641Y Sound-control atomizing multi-function infrared telecontrol device
11/23/1994CN1095487A Suppression of noise and distortion in fiber-optic systems
11/22/1994US5367598 Interface chassis for fiber optic transport system
11/22/1994US5367592 Connector for optical fibres
11/22/1994US5367587 Optical amplifier
11/22/1994US5367398 Optical atmospheric link system
11/22/1994US5367397 Wavelength-stabilizing method and its associated circuitry for an optical communication system
11/22/1994US5367396 Optical frequency marking method and different frequency channel communication network using it
11/22/1994US5367395 Apparatus for detection and location of faults in two-way communication through single optical path
11/22/1994US5367394 Test apparatus
11/22/1994US5367156 Resonance-type optical receiver and receiving method for low-frequency signals
11/22/1994CA2021801C Double active-fiber optical amplifier having a wide-band signal wavelength
11/17/1994EP0624962A2 Optical module
11/17/1994EP0602228A4 High bit rate infrared communication system for overcoming multipath.
11/17/1994DE4315636A1 Wireless discussion and interpreter system
11/15/1994US5365368 Efficient bi-directional optical fiber amplifier for missile guidance data link repeater
11/15/1994US5365362 Ultra-high capacity non-soliton optical transmission using optical phase conjugation
11/15/1994US5365361 Coherent optical multi-channel arrangement
11/15/1994US5365358 Optical switching equipment for the through-connection of optical message cells
11/10/1994DE4402166A1 Terminal station module (terminal unit module) for bidirectional optical signal transmission and method of its production
11/10/1994DE4309422C1 Data transmission
11/09/1994EP0624011A1 Dispersion compensation device
11/09/1994EP0624010A1 An electrooptical line module for transmitting in level-1 synchronous digital hierachy with synchronizing unit
11/09/1994EP0624009A1 Automatic offset control circuit for digital receiver
11/09/1994EP0472709B1 Device for producing optical delays and application to an optical control system of a sweep aerial
11/09/1994CN1094816A An optical transmission line and a method of forming thereof
11/08/1994US5363230 Method of linearizing the transmission function of modulator
11/08/1994US5363229 Optical bus transmission system
11/08/1994US5363221 For a communication system
11/08/1994US5363056 Circuit for linearization of amplified electronic signals
11/03/1994DE4415176A1 Vorrichtung und Verfahren zur Dispersionskompensation in einem faseroptischen Übertragungssystem Apparatus and method for dispersion compensation in an optical fiber transmission system
11/02/1994EP0622916A1 Optical soliton generator
11/02/1994EP0622915A1 Technique utilizing a rotating waveplate for reducing polarization dependent hole-burning in an amplified optical transmission system
11/02/1994EP0622914A1 Technique utilizing stress-induced birefringence for reducing polarization dependent hole-burning in an amplified optical transmission system
11/02/1994EP0622913A1 Optical transmission apparatus with a directly modulated emitter and an optical filtering before the receiver
11/02/1994EP0622912A1 Optical signal transmission network
11/02/1994EP0622650A1 Narrow band mach-zehnder filter
11/02/1994EP0622004A1 Optical processing in asynchronous transfer mode network
11/02/1994CN1094552A An optical communications system for transmitting information signals having different wavelengths over a same optical fiber
11/01/1994US5361319 Dispersion compensating devices and systems
11/01/1994US5361270 Apparatus and method employing polarization modulation to reduce effects of polarization hole burning and/or polarization dependent loss
11/01/1994US5361157 Bidirectional light transmission system and optical device therefor
11/01/1994US5361156 Method and apparatus for predistortion
11/01/1994US5361154 Method and apparatus for performing wavelength-tuning and clock-synchronization in a wavelength division multiplexing optical communication network
10/1994
10/30/1994CA2114082A1 Narrow band mach-zehnder filter
10/28/1994CA2122208A1 Compensation device
10/27/1994WO1994024790A1 Synchronous optical digital transmission system and method
10/27/1994WO1994024781A1 Optical communications dispersion compensation system
10/27/1994WO1994024780A1 Predistortion method and apparatus for laser linearization
10/27/1994WO1994024779A1 Method and apparatus for receiving monitoring signal
10/27/1994CA2160921A1 Optical communications dispersion compensation system
10/27/1994CA2160886A1 Predistortion method and apparatus for laser linearization
10/27/1994CA2160770A1 Synchronous optical digital transmission system and method
10/26/1994EP0621700A2 Wavelength multiplexing network
10/26/1994EP0621699A1 Optical transmission system with optical fibre amplifiers
10/26/1994EP0458782B1 Star-shaped network for data communication between stations
10/25/1994US5359678 Apparatus and method employing fast polarization modulation to reduce effects of polarization hole burning and/or polarization dependent loss
10/25/1994US5359613 Tunable laser oscillator
10/25/1994US5359450 Optical transmission system
10/25/1994US5359449 Optical modulator for an optical transmitter
10/25/1994US5359448 Infrared signal transmitter
10/25/1994US5359447 Optical communication with vertical-cavity surface-emitting laser operating in multiple transverse modes
10/25/1994US5359446 Wide-angle, high-speed, free-space optical communications system
10/25/1994US5359412 Optical frequency discriminator using two mach-zehnder interferometer arrangement
10/25/1994US5359348 Pointing device having improved automatic gain control and information reporting
10/25/1994CA2037351C Optical transmitter
10/19/1994EP0620694A2 Optical cross-connect system with space and wavelength division switching stages
10/19/1994EP0620661A1 Distortion generating circuit
10/19/1994EP0620660A1 Technique for reducing polarization dependent gain in an amplified optical transmission system
10/19/1994EP0620659A1 Multipath optical transmission system controller
10/19/1994EP0462102B1 A method for detecting external influence on an optical cable
10/19/1994CN1093846A Fiber optic cable monhoring system
10/18/1994US5357588 Opto-electronic transducer device for optical link termination equipment and application thereof to various types of optical link
10/18/1994US5357364 Soliton transmission system having sliding-frequency guiding filters
10/18/1994US5357363 Interconnections having improved signal-to-noise ratio
10/18/1994US5357362 Optical telephone using optical modulator
10/18/1994US5357360 Optical data network having adjustable delays for switching over to backup unit
10/18/1994US5357249 Apparatus and method for high speed flexible multiplexing for fiber optic data transmissions
10/18/1994CA2051020C Optical transmission network with frequency locking means
10/18/1994CA2006125C Optical communication systems using fabry-perot cavities
10/15/1994CA2120965A1 Distortion generating circuit
10/13/1994WO1994023507A1 Generation of optical signals with rf components
10/13/1994DE4311552A1 In-service monitoring of optical transmission devices
10/12/1994EP0619669A2 Interface device for data transmission on a radio link
10/12/1994EP0619658A2 Apparatus for extracting an optical clock and apparatus for demultiplexing a time-division multiplexed signal
10/12/1994EP0619657A1 Optical circuit for measuring the reflection sensitivity of an optical transmission system
10/12/1994EP0538277B1 Highly reliable optical data system
10/12/1994CN1093504A Electric motor with frequency speed measuring electric generator
10/11/1994US5355525 Method for operating a hand-held transmitter for controlling vehicle functions
10/11/1994US5355401 Method and apparatus for providing telephony power through a coaxial cable network
10/11/1994US5355381 Self-heterodyne optical fiber communications system
10/11/1994US5355372 Threshold-based load balancing in ATM switches with parallel switch planes related applications
10/11/1994US5355250 Fiber optical communication line with shut off control
10/11/1994US5355243 Direct detecting of optical PSK signals
10/11/1994US5355242 Receiver for binary coded wireless optical data
10/11/1994US5355240 Optical communication link with correction of non-linear effects and optical signal processing method
10/11/1994US5355239 Coherent detection transceiver
10/11/1994US5355238 Method and apparatus for the monitoring and demarcation of synchronous optical networks