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)
12/1997
12/14/1997	CA2208876A1 Device for optical regeneration of binary signals and its use to modify the signal
12/11/1997	WO1997047100A1 A method and an amplifier unit for the transmission of data signals via an optical fibre
12/11/1997	WO1997047099A1 Optical transmitter arrangement
12/11/1997	DE19623883A1 Optische Sendeeinrichtung An optical transmitter
12/10/1997	EP0812078A2 Optical communication system and optical amplifier
12/10/1997	EP0812075A2 Optical fibre transmission systems including dispersion measurement and compensation
12/10/1997	EP0812074A2 Optical receiver board, optical wavelength-tuning filter module used for optical receiver board, and actuator for optical wavelenth-tuning filter module
12/10/1997	EP0811280A1 Optical amplifier arrangement
12/10/1997	EP0811279A1 Attenuation-free optical connection
12/10/1997	EP0811263A1 Optical unit for synchronizing clock signals
12/10/1997	CN1167389A Portable data terminal equipment with electric communication function and infomation processing system
12/10/1997	CN1167380A Optical communication device
12/10/1997	CN1167379A 光通信系统及光放大器 Optical communication systems and optical amplifiers
12/10/1997	CN1167352A Light amplifier, light amplifying method and light transmission system using it
12/10/1997	CN1167269A Controller for controlling light-changable attenuator
12/10/1997	CN1167266A Optical fibre and coupling method thereof
12/09/1997	US5697047 Automated optoelectronic switched distribution system
12/09/1997	US5696859 Optical-filter array, optical transmitter and optical transmission system
12/09/1997	US5696707 Method of measuring the noise level in the presence of a signal
12/09/1997	US5696615 Wavelength division multiplexed optical communication systems employing uniform gain optical amplifiers
12/09/1997	US5696614 Optical wavelength multiplex transmission method and optical dispersion compensation method
12/04/1997	WO1997045972A2 Method for structuring of digital data which can be transferred in both directions on a passive optical network (pon) in a pon tdma system
12/04/1997	WO1997045971A1 Wireless transmission using fiber link
12/04/1997	WO1997045713A1 Eye mask for measurement of distortion in optical transmission systems
12/04/1997	WO1997045711A1 Method and apparatus for monitoring the state of a liquid-crystal polarization modulator
12/04/1997	DE19622012A1 Remotely pumped optical power amplifier
12/04/1997	DE19622011A1 Remotely pumped line amplifier and receiver preamplifier
12/04/1997	DE19622010A1 Optical transmission path esp. for high data rates and signal levels
12/04/1997	DE19621566A1 Frequency equalisation in optical networks
12/04/1997	CA2256356A1 Method and apparatus for monitoring the state of a liquid-crystal polarization modulator
12/03/1997	EP0810752A2 Wavelength controlling method enabling use of wider wavelength range and network system using the method
12/03/1997	EP0810749A2 Communication system comprising a low cost optical filter
12/03/1997	EP0810748A1 Arrangement and method for operating and testing an optical device
12/03/1997	EP0810699A2 Optical repeaters for single-and multi-wavelength operation with dispersion equalization
12/03/1997	EP0809902A1 Device for recovering a clock from a modulated optical input signal
12/03/1997	EP0809898A2 Multi-point to point communication system
12/03/1997	CN1166736A Synchronous modulation method and apparatus for in-line regeneration of WDM soliton signal, and optical telecommunications system using the method
12/03/1997	CN1166612A Method and device for generation of phase conjugate light and wavelength conversion, and system having the device
12/03/1997	CN1166605A Optical fiber organizer
12/03/1997	CN1166603A Dispersion-flattened single-mode optical waveguide with large effective mode surface area
12/03/1997	CA2206945A1 Optical receiver board, optical wavelength-tuning filter module used foroptical receiver board, and actuator for optical wavelength-tuning filter module
12/02/1997	US5694509 Optical coupler
12/02/1997	US5694239 Optical phase conjugator, optical transmission system using the same, and optical phase conjugation method
12/02/1997	US5694238 Device for interconnecting an amplifying fiber
12/02/1997	US5694234 Wavelength division multiplexing passive optical network including broadcast overlay
12/02/1997	US5694233 Switchable wavelength router
12/02/1997	US5694232 Full duplex optical modem for broadband access network
12/02/1997	US5694231 Weighted-sum processing method and apparatus for decoding optical signals
12/02/1997	US5694114 Coherent alarm for a secure communication system
11/1997
11/29/1997	CA2206375A1 Optical amplifier relay transmission system
11/27/1997	WO1997044936A1 Method and apparatus for polarisation-insensitive quantum cryptography
11/27/1997	WO1997044929A1 Optical synchronisation arrangement
11/27/1997	WO1997044902A1 Control circuit for recording the actuation of an optical key
11/27/1997	DE19654853A1 Optical data transmission and reception circuit using light emitting diode
11/27/1997	DE19616152A1 Portable infrared miniature receiver
11/27/1997	DE19616150A1 Wireless information system for e.g. museum
11/26/1997	EP0809384A2 Network failure restoration method with different recovery performances for different signal groups
11/26/1997	EP0809372A2 Optical network unit and central unit of an optical communication network
11/26/1997	EP0809371A1 Data emitting and receiving circuit
11/26/1997	EP0809370A1 Digital signal receiver circuit
11/26/1997	EP0809369A1 Optical receiving circuit
11/26/1997	EP0809368A1 Optical amplifier optical communication system with gain dependent on the input signal polarization
11/26/1997	EP0809367A1 Method and programmable apparatus for the production of trains of pulses with variable width
11/26/1997	EP0809129A2 Semiconductor optical modulator and method for making the same
11/26/1997	EP0808536A1 Method for assignment of wavelength channels in an optical bus network
11/26/1997	EP0808534A2 Method of communication channel monitoring using parity bits
11/26/1997	EP0808473A1 Arrangement and method at an optical fibre
11/26/1997	CN1166250A Method and appts. for controlling calls in a code division multiple access system
11/26/1997	CN1166109A Optical transmission of signals
11/26/1997	CN1036542C Electric hydraulic system with distributing control
11/25/1997	US5691532 Photonic heterodyning having an image component separator
11/23/1997	CA2205990A1 Optical network unit and center of an optical communication network
11/20/1997	WO1997043706A1 Method and device for transmitting key operation information and transmission-reception system
11/19/1997	EP0808040A2 Optical communications system having distributed intelligence and monitoring of the fibres
11/19/1997	EP0808039A2 Optical interface
11/19/1997	EP0808038A2 Display device with brightness-adapted display illumination
11/19/1997	EP0807886A2 Optical network device
11/19/1997	EP0807341A1 Device for data transmission with optical signals between a transmission and a reception unit
11/19/1997	EP0807340A1 Optical system employing near-incoherent processing for distortion correction
11/19/1997	CN1165444A Method of identifying faults in WDM optical networks
11/19/1997	CN1165338A Infrared signal transmitting apparatus
11/18/1997	US5689604 Fiber optic operations center
11/18/1997	US5689597 Multimode interference couplers and method therefor
11/18/1997	US5689594 Multiple wavelength bidirectional lightwave amplifier
11/18/1997	US5689441 For processing signals in real time
11/18/1997	US5689356 System and method for minimizing nonlinear distortion in optical communication systems employing laser intensity modulation
11/18/1997	US5689355 Repeater using optical cables for radio paging system
11/18/1997	US5689354 Optical space communication apparatus
11/18/1997	US5689353 Remote control with two-way data coupling
11/18/1997	US5689122 InP/InGaAs monolithic integrated demultiplexer, photodetector, and heterojunction bipolar transistor
11/18/1997	CA2007692C Active fiber for optical signal transmission
11/13/1997	WO1997042740A1 Low-power light signal transmission system and memory device using same
11/13/1997	WO1997042722A1 Optical emitter
11/13/1997	WO1997042542A1 A light modulation system including a super conductive plate assembly for use in a data transmission scheme and method
11/13/1997	DE19618941A1 Optical communication network measurement method
11/13/1997	DE19617956A1 Optischer Sender Optical transmitter
11/13/1997	DE19617251A1 Data transmission system
11/12/1997	EP0806098A1 Dispersion compensation in optical fibre transmission
11/12/1997	EP0806091A1 Transmission system for a non linear transmission medium
11/12/1997	EP0806027A1 Solar powered price display system

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