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)
12/2004
12/23/2004WO2004112287A1 Power tilt compensation using automatic power balance
12/23/2004WO2004112286A1 Optical transmission system; and transmitter, receiver and signal level adjustment method for use therein
12/23/2004WO2004112285A1 System, device, and method for radio frequency optical transmission
12/23/2004WO2004112284A1 Optical transmission system of remote excitation method
12/23/2004WO2004112264A2 System and method for performing high-speed communications over fiber optical networks
12/23/2004WO2004112203A2 Modular optical device that interfaces with an external controller
12/23/2004WO2004111707A2 Converting signals in passive optical networks
12/23/2004WO2004111043A1 Zwitterionic non-linear optophores and devices incorporating same
12/23/2004WO2004068874A3 Asymetric optical network traffic flow control
12/23/2004WO2004066509A3 Statistic parameterized control loop for compensating power and extinction ratio of a laser diode
12/23/2004WO2004008665A8 Device for protecting fibre lines against destruction by laser radiation
12/23/2004US20040259498 Mobile telephone for personal communication
12/23/2004US20040258423 Optical receiver for wavelength-division-multiplexed signals
12/23/2004US20040258422 Optical communication system with multiple photonic integrated circuit (PIC) chips and an external booster optical amplifier for photonic integrated circuits (PICs)
12/23/2004US20040258421 Quantum steganography
12/23/2004US20040258420 Ultra-dense wavelength and subcarrier multiplexed optical and RF/mm-wave transmission system
12/23/2004US20040258417 Wireless optical system for multidirectional high bandwidth communications
12/23/2004US20040258416 Reflective optical apparatus for free-space optical communicating system
12/23/2004US20040258415 Techniques for secure free space laser communications
12/23/2004US20040258414 Apparatus and method for repeating signal by using wireless optical transmission
12/23/2004US20040258410 Bit synchronization circuit and central terminal for PON systems
12/23/2004US20040258378 Method of constructing an optical transmission line and an optical transmission line
12/23/2004US20040258352 Variable dispersion compensator utilizing wavelength conversion
12/23/2004US20040258349 Modular cross connect system with 3d-mems for optical telecommunication networks
12/23/2004US20040258183 High speed circuits for electronic dispersion compensation
12/23/2004US20040258181 Differential receiver circuit with electronic dispersion compensation
12/23/2004US20040258145 Differential receiver circuit with electronic dispersion compensation for optical communications systems
12/23/2004US20040257642 Method and apparatus for communicating status in a lightwave communication system employing optical amplifiers
12/23/2004US20040257641 Optical amplifier, transmission system and method for optimization
12/23/2004US20040257640 Raman amplification repeater
12/23/2004US20040257564 Integrated polarization beam splitter with quarter-wave plate for polarimeter and PMD compensation applications
12/23/2004US20040257457 System and method for optical data transfer
12/23/2004DE10392214T5 Phasenmodulationsschaltung, Prüfvorrichtung und Kommunikationssystem Phase modulation circuit tester and communication system
12/22/2004EP1489764A2 Optical transmitter-receiver and optical fiber
12/22/2004EP1489763A1 Optical amplifier, transmission system and method for optimization
12/22/2004EP1488573A2 Supervisory channel in an optical network system
12/22/2004EP1488562A1 Synchronization system for all optical slotted ring dynamic networks
12/22/2004EP1488561A1 Reservation-based mac and optical network
12/22/2004EP1488552A1 Dynamic broadband optical equalizer
12/22/2004EP1488551A1 Optical transmission system using an optical phase conjugation device
12/22/2004EP1488550A1 Optical transmission system using an optical phase conjugation device
12/22/2004EP1488549A2 Optical fiber receiver having an increased bandwidth
12/22/2004EP1488548A2 Communication system and split-band amplifying apparatus using a depressed-profile fiber amplifier
12/22/2004EP1488547A2 Systems and methods for active monitoring and management of fiber links
12/22/2004EP1488546A1 Error propagation and signal path protection in optical network
12/22/2004EP1488485A2 TRANSMITTER PHOTONIC INTEGRATED CIRCUIT (TxPIC) CHIP WITH ENHANCED POWER AND YIELD WITHOUT ON-CHIP AMPLIFICATION
12/22/2004EP1488265A2 Demultiplexing optical signal receiver photonic integrated circuit (rxpic) and associated transmitter and method of testing a photonic integrated circuit
12/22/2004EP1488264A1 Method and arrangement for signaling in a networkcomprising nodes with optical ports
12/22/2004EP1192715B1 Opto-electrical actuation system and method
12/22/2004EP0873605B1 Transmitting supervisory messages from a fiber amplifier
12/22/2004CN2666040Y Self-adapting polarization mode dispersion compensation device
12/22/2004CN2666039Y Optical fibre module case
12/22/2004CN2665804Y Infrared transmission folding keyboard
12/22/2004CN2665728Y Pigtail sleeve
12/22/2004CN2665726Y Wavelength-division multiplex for measuring Raman scattering
12/22/2004CN1557079A Infrared communications system comprising a coding function to reduce the maximum number of consecutive spaces in the signal sent
12/22/2004CN1557060A Improvements in or relating to signal transmission in an optical system
12/22/2004CN1556595A Monitoring station and data, video frequency image optical fiber mixed transmission system based on RS 485 chain circuit
12/22/2004CN1556593A Digital interface circuit in light synchronous digit transmission system and its data demultiplexing method
12/22/2004CN1556438A Gain dsplacement type thulium aduterated optical fiber amplifier using spontaneous radiation light source as auxiliary pumping
12/22/2004CN1556426A Reflection type array wave guide modulating type photoswitch
12/22/2004CN1556425A Regulatable optical appliance based on micro electromechanical system technology
12/22/2004CN1556384A Optical cable circuit failure point precision locating method
12/22/2004CN1181627C Digital multiplexing method and apparatus for fibre-optic transmission
12/22/2004CN1181626C Optical amplifier for optical communication equipment
12/22/2004CN1181564C Device with optical communication means
12/22/2004CN1181364C Plastic fiber coupler and its making process
12/21/2004US6834165 Parallel opto-electric structure for high sensitivity and wide bandwidth optical transceiver
12/21/2004US6834164 Alignment of an optical transceiver for a free-space optical communication system
12/21/2004US6834052 Band management circuit
12/21/2004US6833948 Method for implementing power equalization of dense wavelength division multiplexing system
12/21/2004US6833947 Optical fiber transmission system
12/21/2004US6832859 Free space optical system with multiple function detectors
12/16/2004WO2004110109A1 Light output modulation for data transmission
12/16/2004WO2004109959A2 Intelligent wavelength division multiplexing systems based on arrays of wavelength tunable lasers and wavelength tunable resonant photodetectors
12/16/2004WO2004109957A1 Optical signal reception device and for-digitization discrimination point control method thereof
12/16/2004WO2004109956A1 Led system for illumination and data transmission
12/16/2004WO2004109955A1 Optical transmitting and receiving system
12/16/2004WO2004109938A2 Optical receiver having an open loop automatic gain control circuit
12/16/2004WO2004109431A2 Computing a path for an open ended uni-directional path protected switched ring
12/16/2004WO2004095735A3 Optical pulse regeneration device, installation comprising one such device and use of same
12/16/2004WO2004084468A3 Communications device powered from host apparatus
12/16/2004WO2004073184A3 Devices and methods for dynamic dispersion compensation
12/16/2004WO2004034102A3 Devices and methods for dynamic dispersion compensation
12/16/2004WO2004013979A3 Integrated post-amplifier and laser driver assembly with digital control interface
12/16/2004US20040253003 Gain compensating optical receiver circuit
12/16/2004US20040253002 Optical receiver
12/16/2004US20040253001 Optical transmission systems including optical amplifiers and methods
12/16/2004US20040253000 Optical pulse train generator
12/16/2004US20040252999 Method for controlling wavelength characteristics of optical transmission powers by Raman amplification, and wavelenth division multiplexing optical communication system and optical amplifier adopting the same
12/16/2004US20040252998 Infrared (ir) transmission device
12/16/2004US20040252997 Asymmetric broadband optical wireless network to a target device
12/16/2004US20040252994 Optical communication system with suppressed SBS
12/16/2004US20040252963 Bandpass filter and method for increasing the sensitivity on reception of an optical signal
12/16/2004US20040252956 Large-effective-area inverse dispersion compensating fiber, and a transmission line incorporating the same
12/16/2004US20040252929 Polarization-shaped duobinary optical transmission apparatus
12/16/2004US20040252078 Bi-directional interface for low data rate application
12/16/2004US20040251403 Peak and bottom detectors in burst mode optical receiver
12/16/2004DE102004018166A1 Pre-emphasis method for optical multiplex signal in optical transmission system has new signal values calculated from actual signal powers at transmitter and receiver and mean power at transmission side
12/16/2004CA2521518A1 Computing a path for an open ended uni-directional path protected switched ring