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)
11/2004
11/10/2004CN1544968A Approximate coplanar waveguide compatible with duct type photo-detector pickoff tube core and fabricating method thereof
11/10/2004CN1175620C Automatic discovery and positioning method of the network elements in network management system in case that network topology is configured
11/10/2004CN1175597C Buffer-storage-free photo-exchanging matrix based on sharing wavelength converter
11/10/2004CN1175596C Great-range system delay regulating method and circuit for passive optical network
11/09/2004US6816684 Method of generating a clock signal of exact phase from an optical input signal and optical receiver therefor
11/09/2004US6816683 Wavelength division multiplexing communications network supervisory system
11/09/2004US6816682 Global gateway architecture for interconnecting regional satellites into a communication network
11/09/2004US6816681 Analogous channel method for performance monitoring and equalization in optical networks
11/09/2004US6816680 Optical communications network and nodes for forming such a network
11/09/2004US6816659 Unit for compensating the chromatic dispersion in a reconfigurable manner
11/09/2004US6816657 Raman fiber optic amplifier with reduced dispersion
11/09/2004US6816656 Method and device for handling optical pulse signals
11/09/2004US6816639 Optically powered and controlled optical switch
11/09/2004US6816566 Noncontact type signal transmission device and x-ray computed tomography apparatus including the same
11/09/2004US6816299 Method and system for optimization of an optical transmission signal which is modulated with a binary data signal
11/09/2004US6816112 Hybrid RF/optical acquisition and tracking system and method
11/09/2004US6815662 Apparatus and method for measuring optical signals by optical sampling
11/09/2004US6814504 Optical communication device
11/09/2004US6814376 Method and system for generating short pulse signals
11/04/2004WO2004095849A2 Communication systems incorporating hts filters and non-linear modulators such as rf-light modulators
11/04/2004WO2004095751A1 Optical network, and method, for the transmission of wdm channels
11/04/2004WO2004095740A1 Optical receiver and optical transmission system
11/04/2004WO2004095739A1 Distributed and discrete amplification of optical signals
11/04/2004WO2004095738A1 Counter-pumped distributed raman amplification in wavelength division multiplex optical communication systems
11/04/2004WO2004095737A2 Device for high-speed, local, wireless signal transmission
11/04/2004WO2004095736A1 Reception error rate controller
11/04/2004WO2004095735A2 Optical pulse regeneration device, installation comprising one such device and use of same
11/04/2004WO2004095124A1 Single-photon generator
11/04/2004WO2004095105A1 Optoelectronic circuit board with optical waveguide and optical backplane
11/04/2004WO2004095098A1 High dispersion, wide band dispersion compensating optical fiber
11/04/2004WO2004095082A2 Method and apparatus for reducing interference in an optical data stream using data­independent equalization
11/04/2004WO2004066510A3 Otdr arrangement for detecting faults in an optical transmission system employing two pairs of unidirectional optical fibers
11/04/2004US20040219947 Wireless transmission device for a computer peripheral
11/04/2004US20040218933 Polarization diversity receiver for optical transmission system
11/04/2004US20040218932 Multi-detector detection of optical signals
11/04/2004US20040218931 Linearized Optical Transmitter Using Feedback Control
11/04/2004US20040218930 Method and apparatus for characterizing optical pulses using reduced complexity chronocyclic tomography
11/04/2004US20040218929 Duobinary optical transmission apparatus
11/04/2004US20040218928 Optical communication networks and methods of controlling them
11/04/2004US20040218926 Optical add/drop multiplexer
11/04/2004US20040218924 Optical communications system and method for transmittin point-to-point and broadcast signals
11/04/2004US20040218922 System and method for WDM communication with interleaving of optical signals for efficient wavelength utilization
11/04/2004US20040218921 Optical path crossconnect system with high expanding characteristic
11/04/2004US20040218920 Pilot tones for optical signal wavelength identification and power measurement
11/04/2004US20040218919 Method and apparatus for Q-factor monitoring using forward error correction coding
11/04/2004US20040218890 Flat dispersion frequency discriminator (FDFD)
11/04/2004US20040218866 Connecting method of optical function devices, and optical apparatus
11/04/2004US20040218862 Wavelength dispersion compensator and optical transmission line
11/04/2004US20040218856 Chromatic dispersion compensation module
11/04/2004US20040218766 360 Degree infrared transmitter module
11/04/2004US20040218688 Ultra-wideband communication through a power grid
11/04/2004US20040218642 Optical frequency converter
11/04/2004US20040218526 Bi-directional wavelength division multiplexing self-healing optical ring network
11/04/2004US20040218288 Optical communication assembly
11/04/2004US20040218258 Method and apparatus for controlling power transients in an optical communication system
11/04/2004US20040218256 Optical Amplifier
11/03/2004EP1473962A2 System and method for WDM communication with interleaving of optical signals for efficient wavelenth utilization
11/03/2004EP1473960A2 Bi-directional wavelength division multiplexing self-healing optical ring network
11/03/2004EP1473858A1 Chromatic dispersion compensation modul
11/03/2004EP1473857A1 Apparatus and method for managing dispersion within an optical add/drop module
11/03/2004EP1473856A2 Duobinary optical transmission apparatus
11/03/2004EP1473855A1 Method and apparatus for Q-factor monitoring using forward error correction coding
11/03/2004EP1472902A1 Apparatus, system and method for optical packet switching using frequency header
11/03/2004EP1472893A1 Method and apparatus for browsing objects in a user's surroundings
11/03/2004EP1472764A2 Method for configuring a laser operating system
11/03/2004EP1472644A1 Laser temperature performance compensation
11/03/2004EP1099200B1 Optical interface between receiver and tag response signal analyser in RFID system for detecting low power resonant tags
11/03/2004CN2653790Y USB interface device for laser radio communication
11/03/2004CN2653789Y Cross gain modulated wave length convertor
11/03/2004CN2653544Y Beat frequency full light wave length converter
11/03/2004CN2653540Y Electric control adjustable light attenuator
11/03/2004CN2653525Y Optic fiber grating type wave length adjusting OADM device with temperature controller
11/03/2004CN1543720A 光放大器 Optical amplifier
11/03/2004CN1543260A System and method for WDM communication with interleaving of optical signals for efficient wavelength utilization
11/03/2004CN1543113A Duobinary optical transmission apparatus
11/03/2004CN1543093A Apparatus and method for managing dispersion within an optical add/drop module
11/03/2004CN1543092A SCSI instruction optimization method based on FC-SAN storage device
11/03/2004CN1543091A Method for measuring wavelength discrete value and nonlinear constant of optical fiber and measuring equipment thereof
11/03/2004CN1543071A Multichannel photocoupler
11/03/2004CN1543027A Bias flow generating circuit, laser diode drive circuit and light transmission transmitter
11/03/2004CN1542500A Monobloc crystal integrated free space type vertical and horizontal network
11/03/2004CN1542483A Optical module and a method of fabricating the same
11/03/2004CN1542479A Strain tuning optical fiber grating dispersion dynamic compensation, monitoring device and method thereof
11/03/2004CN1542470A Flexible optical fiber multipath image transmission device
11/03/2004CN1174577C Producing laser light of different wavelengths
11/03/2004CN1174570C Light receiving and emitting device
11/03/2004CN1174569C Communication using spread spectrum methods over optical fibers
11/03/2004CN1174568C Optical communication apparatus and method
11/03/2004CN1174567C Autotest means for infrared transmission device
11/03/2004CN1174566C 分支线路监视系统和分支线路监视方法 A branch line monitoring system and branch line monitoring method
11/03/2004CN1174529C Frequency locker in optical fiber
11/03/2004CN1174528C Optical fiber amplifier for controlling gain flatness
11/02/2004US6813448 Suppression of stimulated brillouin scattering in optical transmissions
11/02/2004US6813446 System for acquiring and maintaining reliable optical wireless links
11/02/2004US6813445 Optical crossconnect apparatus and optical transmission system
11/02/2004US6813426 Fiber with continuously changing chromatic dispersion
11/02/2004US6813425 Fiber optic cable for increased transmission capacity and wavelength division multiplexing optical transmission system using the same
11/02/2004US6813410 Optical switch for compensating for degradation of optical-coupling characteristic
11/02/2004US6813305 Method and apparatus for optical wavelength conversion
11/02/2004US6813288 Tunable optical signal oscillator