Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › 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
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)
12/1999
12/02/1999WO1999062202A1 Bidirectional dispersion compensation system
12/02/1999WO1999062201A1 Method for constructing a hierarchic multi-ring network on fiber-optic communication lines, variants and basic network for realising the same
12/02/1999WO1999062187A2 Optical amplifier having a variable attenuator controlled according to the input power
12/02/1999WO1999062186A2 Optical amplifier having substantially uniform spectral gain
12/02/1999WO1999062151A1 Optical amplifier having a variable attenuator which is controlled on basis of detected ase
12/02/1999WO1999053363A3 Emulator and compensator for polarization mode dispersion
12/02/1999WO1999050978A3 Optical fiber amplifier having a gain flattening filter
12/02/1999WO1999014900A3 Communications network
12/02/1999DE19823587A1 Optische Verbindung sowie Verbindungseinheit zum Austausch von Daten zwischen Geräten Optical connection and connection unit for exchanging data between devices
12/02/1999CA2343108A1 Optical amplifier having a variable attenuator controlled according to the input power
12/02/1999CA2333412A1 Bidirectional dispersion compensation system
12/02/1999CA2301825A1 Optical amplifier having substantially uniform spectral gain
12/01/1999EP0961426A2 Bidirectional optical transmitter and receiver
12/01/1999EP0961425A1 Soliton transmission system with double filtering
12/01/1999EP0961424A2 Optical transmitter, terminal device, and optical communicaton system having the optical transmitter
12/01/1999EP0961423A2 Noncontact information transmitter
12/01/1999EP0961422A1 Optical transmitter using several optical sources
12/01/1999EP0960492A2 Signalling system
12/01/1999EP0960491A1 Optical fiber amplifier having variable gain
12/01/1999EP0960349A1 Optical devices and methods
12/01/1999EP0713584B1 Optical system
12/01/1999CN1237298A Producing laser light of different wavelengths
12/01/1999CN1237293A System with optical amplifier
12/01/1999CN1237051A Light wavelength-multiplexing systems
12/01/1999CN1236897A 光学开关和光学网络 Optical switches and optical network
11/1999
11/30/1999US5995694 Wavelength division multiplex communication link for optical transmission
11/30/1999US5995687 Circuit for testing an optical communication system
11/30/1999US5995593 Wire/wireless communication system for communicating between two locations using telephone network
11/30/1999US5995512 High speed multimedia data network
11/30/1999US5995278 Optical transmission system
11/30/1999US5995277 Optical fiber amplifier with absorber
11/30/1999US5995276 Wavelength-division-multiplexing optical amplifier device and wavelength-division-multiplexing optical transmission system
11/30/1999US5995274 Multi-wavelength light amplifier
11/30/1999US5995262 Signal transmission bus and signal processing apparatus
11/30/1999US5995261 Capacitors on dielectric feedthrus for metal packages
11/30/1999US5995259 Bidirectional optical telecommunication system comprising a bidirectional optical amplifier
11/30/1999US5995258 Terminal for an optical network, optical network and terminating switching center for the same
11/30/1999US5995257 Add/drop multiplexer for multiwavelength pulse oriented optical communications systems
11/30/1999US5995255 Concatenated fiber grating optical monitor
11/30/1999US5995254 Wavelength division multiplexing light transmitting system
11/30/1999US5995253 Variable wavelength transceiver
11/30/1999US5995252 Low power digital signal isolator
11/30/1999US5994999 Low voltage link for transmitting on/off orders
11/30/1999US5994689 Photoelectric cell with stabilised amplification
11/30/1999US5993074 High speed electro-optical signal translator
11/30/1999CA2273469A1 Apparatus and method for reducing spm/gvd in optical systems
11/30/1999CA2062664C Optical-fibre telecommunication line with optical amplifiers, provided with protection means in a position of interrupting the light emission along the entire line in the presenceof an interruption of the optical fibre and of re-activating it automatically when its continuity is restored
11/29/1999CA2273582A1 Optical communication system
11/28/1999CA2270765A1 Dual filtered soliton signal fiber optics transmission system
11/27/1999CA2272528A1 Optical connection and connection unit for the exchange of data between devices
11/25/1999WO1999060732A1 Receiver circuit for an optical signal and a device for transmitting data with such a receiver circuit
11/25/1999WO1999060731A1 Optical surface plasmon-wave communications systems
11/25/1999WO1999060730A1 Method and system for removal of low order optical transmission modes to improve modal bandwidth in a multimode optical fiber computer network
11/25/1999WO1999050979A3 Optical fibre amplifier having a controlled gain
11/25/1999WO1999049340A3 Apparatus and method for compensation of chromatic dispersion in optical fibers
11/24/1999EP0959640A2 Optical switch and optical network
11/24/1999EP0959578A2 Wavelength division multiplexing system and its termination
11/24/1999EP0959577A2 Optical signal repeating and amplifying device and optical level adjusting device
11/24/1999EP0959571A1 Apparatus for the homodyne reception of optical phase shift-keyed signals
11/24/1999EP0958702A2 Reference signal generator for catv return path
11/24/1999EP0958668A2 Method and device for signal repetition
11/24/1999EP0958516A1 Dispersion compensation fibre
11/24/1999EP0783809B1 Hybrid fiber/coax video and telephony communication system
11/24/1999CN1236234A Fiber optic cable monitoring system
11/24/1999CN1046830C Fiber optic cable monitoring system
11/23/1999US5991885 Method and apparatus for detecting the presence of a remote device and providing power thereto
11/23/1999US5991478 Fiber optic rotary joint
11/23/1999US5991477 Optical transmission system, optical multiplexing transmission system, and related peripheral techniques
11/23/1999US5991476 Pump directed optical switching element
11/23/1999US5991335 Method and system for line isolation
11/23/1999US5991323 Laser transmitter for reduced signal distortion
11/23/1999US5991069 Split-pumped dual stage optical fiber amplifier
11/23/1999US5991062 Method and device for obtaining error signals for spatial beam regulation of an optical coherent receiver
11/23/1999US5991061 Laser transmitter for reduced SBS
11/23/1999US5991060 Automatic power control for a wavelength selective EML module
11/23/1999US5991059 Marshalling in optical TDMA systems
11/23/1999US5991058 Method and apparatus for a network comprising a fourier plane photonics package
11/23/1999US5990475 Barrier mountable optically coupled isolator housing and assembly having a waveguide
11/21/1999CA2272763A1 Optical communication system
11/18/1999WO1999059272A1 Method and apparatus for automated time domain monitoring in optical networks
11/18/1999WO1999059271A1 Communications device retroreflecting incident modulated radiation
11/18/1999WO1999059270A1 Signal transmission method and motherboard structure
11/18/1999WO1999059025A1 Soliton pulse transmission over waveguide fiber lengths
11/18/1999DE19821865A1 Receiver circuit for optical signal especially infrared signal
11/18/1999DE19821142A1 Optical receiver for digitally transmitted data
11/18/1999CA2328716A1 Soliton pulse transmission over waveguide fiber lengths
11/17/1999EP0957596A1 Data encoded optical pulse generator
11/17/1999EP0957595A2 Signal-to-noise ratio monitoring apparatus and method in optical signals
11/17/1999EP0957544A1 Pump directed optical switching element
11/17/1999EP0956666A1 An optical amplifier and a method of preventing emission therefrom of optical power exceeding a prescribed safety limit
11/17/1999EP0956665A1 Path to provide otdr measurements of an optical transmission system that includes optical isolators
11/17/1999EP0956664A1 Data transfer apparatus for an electronic device
11/17/1999EP0956663A1 Ratiometric compensated optical isolation coupler
11/17/1999EP0956624A1 Fiber lasers with shared pump
11/17/1999EP0806027A4 Solar powered price display system
11/17/1999EP0714574B1 Method and apparatus for the monitoring and demarcation of synchronous optical network
11/17/1999CN1235721A Programmable wavelength router
11/17/1999CN1235439A Optical supervisory transmission signal control device
11/16/1999US5987303 Wireless transmission using fiber link
11/16/1999US5987205 Infrared energy transmissive member and radiation receiver
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