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)
06/1997
06/25/1997CN1152984A Optical telecommunications network
06/25/1997CN1152983A Processing for optical data packet
06/25/1997CN1152980A Generation of radio frequency modulated optical radiation
06/24/1997US5642448 Integrable fiberoptic coupler and resulting devices and systems
06/24/1997US5642447 Fiber optic network transmission system with integrated optical isolator couplers
06/24/1997US5642405 Cellular communications system with centralized base stations and distributed antenna units
06/24/1997US5642219 Optical repeater
06/24/1997US5642217 Apparatus for repowering and monitoring serial links
06/24/1997US5642215 Optical transmission system
06/22/1997CA2192635A1 Modulated and depolarized optical signal transmission system
06/19/1997WO1997022190A1 Meshed optical network
06/19/1997WO1997022023A1 Formation of a refractive index grating
06/19/1997CA2239730A1 Formation of a refractive index grating
06/19/1997CA2193249A1 Encryption device and device for decrypting informations carried by asynchronous transfer mode cells
06/18/1997EP0779761A2 Optical switching unit and control method for same
06/18/1997EP0779721A2 Channel insertion in a WDM system
06/18/1997EP0779719A2 Polarization diversity receiver systems
06/18/1997EP0779718A2 Optical communication network and method for optically detecting a fault
06/18/1997EP0672284B1 Measuring process and device with analog optical signal transmission
06/18/1997CN1152381A Device for transmitting and receiving rotating light signals
06/18/1997CN1152224A Chirped-pulse multiple wavelength telecommunications system
06/18/1997CN1152223A Remote IR receiver with strong light and electromagnetic immunity
06/17/1997US5640262 Control system and connecting device
06/17/1997US5640160 Pulse modulation method
06/17/1997CA2118974C System for restoring the transmission quality in a link including amplifiers in cases of failure in one or several amplifiers
06/16/1997CA2192922A1 Method of and apparatus for data communications between portable information terminals
06/12/1997WO1997021288A1 Full duplex optical modem for broadband access network
06/12/1997WO1997021261A1 Eyesafe transmission of hazardous laser beams
06/12/1997DE19649218A1 Optical switch with shutter slid between light emitter and fibre end
06/11/1997EP0778682A2 Optical fiber amplifier repeating system
06/11/1997EP0778681A2 Linearisation circuit device
06/11/1997EP0778479A2 Optical ADD/DROP multiplexer device
06/05/1997WO1997020403A1 Dispersion management system for soliton optical transmission system
06/05/1997WO1997020399A1 Transmission system for a non linear transmission medium
06/05/1997WO1997015969A3 Optical transmission link capable of high temperature operation without cooling with an optical receiver module having temperature independent sensitivity performance and optical transmitter module with laser diode source
06/05/1997DE19543385C1 Mobile optical signal transmitter
06/04/1997EP0777353A2 WDM token bus network
06/04/1997EP0777347A2 Optical transmission system and optical repeater
06/04/1997EP0777346A2 Optical amplifier and optical communication system employing the same
06/04/1997EP0777345A2 Surveillance method of optical amplifier-repeater transmission system
06/04/1997EP0776558A1 Quantum cryptography
06/04/1997EP0776554A1 Optical emitting head including a laser and a modulator
06/04/1997EP0776553A1 An infrared communication device for multistandard operations
06/04/1997EP0776552A1 Fault location in optical communication systems
06/04/1997EP0776491A1 Polarization independent optical directional coupler wavelength tunable filters/receivers
06/04/1997EP0653129B1 Free space optical communication system
06/04/1997EP0653076B1 Optical radiation devices
06/04/1997CN2255699Y Automatic cutting controller for laser
06/04/1997CN1151229A In-line predistorted for linearization of electronic and optical signals
06/03/1997US5636301 Optical waveguide amplifiers
06/03/1997US5636264 Radio telephone system which utilizes an infrared signal communication link
06/03/1997US5636053 Fiberoptic amplifier system with noise figure reduction
06/03/1997US5636048 Equalizing amplifier, receiver using the same and preamplifier
06/03/1997US5636047 Optical interconnection system
06/03/1997US5636046 Optical dispersion compensation method using transmissible band determined from synergetic effect of self phase modulation and group velocity dispersion
06/03/1997US5636045 Photonic switching method and photonic switch utilizing same
06/03/1997US5635915 Transmission system
05/1997
05/29/1997WO1997019529A1 Device for the optical transmission of signals
05/29/1997WO1997019528A1 Optical transmitter
05/29/1997WO1997019527A1 Submillimeter indirect heterodyne receiver and mixer element
05/29/1997WO1997019526A1 Improvements in transmission of optical signals
05/29/1997CA2237661A1 Submillimeter indirect heterodyne receiver and mixer element
05/28/1997EP0776103A2 Optical communication system using optical phase conjugation to suppress waveform distortion caused by chromatic dispersion and optical kerr effect
05/28/1997EP0557341B1 Optical clock recovery
05/28/1997DE19543550A1 Optical communications network for use with optical sub-sea cables
05/27/1997US5633961 Switched optical interconnect
05/27/1997US5633749 Optical fiber amplifier having light surge preventing function
05/27/1997US5633743 Optical communications system using tunable tandem Fabry-Perot etalon
05/27/1997US5633742 Optical data communication and location apparatus, system and method and transmitters and receivers for use therewith
05/27/1997US5633741 Multichannel optical fiber communications
05/22/1997WO1997018645A1 Multi-tone phase modulation for light wave communication system
05/21/1997EP0774879A1 System for monitoring and controlling a point to multipoint access network
05/21/1997EP0774844A1 Method and device for optically recovering the synchronism of an optical digital signal
05/21/1997EP0774810A2 Phase conjugate wave generating device, wavelength converting method, optical dispersion compensation method and multi-wavelength light generating device
05/21/1997EP0774676A2 Positive dispersion optical waveguide
05/21/1997CN1150514A Access network
05/20/1997USRE35516 Adiabatic reflection Y-coupler apparatus
05/20/1997US5631916 Apparatus and method for optically transmitting electrical signals in the 20-300 gigahertz frequency range
05/20/1997US5631760 Apparatus for the optical heterodyne reception of signals
05/20/1997US5631759 Automated system, and corresponding method, for measuring receiver pulse width distortion of electro-optic modules
05/20/1997US5631758 Chirped-pulse multiple wavelength telecommunications system
05/18/1997CA2188498A1 Positive dispersion optical waveguide
05/15/1997WO1997017780A2 Optical frequency multiplexing system
05/15/1997WO1997017773A1 Non-linearity estimation method and device
05/15/1997WO1997017627A1 Low profile optical device with multiple mounting configurations
05/15/1997DE19528597A1 Optical information transmission system
05/14/1997EP0773641A2 Optical communications system using tunable tandem Fabry-Perot etalon
05/14/1997EP0773640A2 Optical communication system using tandem Fabry-Perot etalon for wavelength selection
05/14/1997EP0772924A1 Generation of radio frequency modulated optical radiation
05/13/1997US5629994 Optical WDM coupling systems
05/13/1997US5629983 Parallel transmission through plurality of optical fibers
05/13/1997US5629959 Wideband square-law detector having a triangular frequency characteristic as well as a transmission system and a receiver including such a detector
05/13/1997US5629795 Optical amplifying-repeating transmission system
05/13/1997US5629789 Passive optical repeater bypass for optical fiber systems
05/13/1997CA2093991C Light pulse source and light soliton transmission system equipped with said source
05/09/1997WO1997016679A1 Vertical cavity surface emitting laser arrays for illumination
05/07/1997EP0772314A2 SCM optical communication system
05/07/1997EP0772313A2 SCM optical communication system
05/07/1997EP0772312A2 SCM optical communication system
05/07/1997EP0772308A2 Light receiving device