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)
06/2004
06/09/2004EP1427123A1 Receiver for OTDM/PDM optical signals
06/09/2004EP1427122A2 Bidirectional wavelength division multiplexing self-healing ring network
06/09/2004EP1427120A1 Polarization mode dispersion controller using feed-forward compensation
06/09/2004EP1427119A2 Optical amplifier and optical communication system employing the same
06/09/2004EP1427118A1 Optical fiber amplifier having automatic power control function and automatic power control method
06/09/2004EP1427075A2 Raman amplifier and optical relay transmission system
06/09/2004EP1425885A1 Method and system for transmitting data from a first data network into a second data network
06/09/2004EP1425866A2 Optical communications systems, devices, and methods
06/09/2004EP1425865A2 System for acquiring and maintaining reliable optical wireless links
06/09/2004EP1425616A1 Optical arrangement and transceiver module for bi-directional optical wdm systems and optical data transmissions
06/09/2004CN2620287Y 1X2 small mechanical light switch
06/09/2004CN1503500A Duobinary optical transmission apparatus
06/09/2004CN1503499A Duobinary optical transmission apparatus
06/09/2004CN1503498A All-optical regenerator for retiming, reshaping and retransmitting an optical signal
06/09/2004CN1503497A Wavelength converter and optical cross-connect system using the same
06/09/2004CN1503496A Virtual ring protection method for optical wave division network
06/09/2004CN1503495A Method and device for realizing business pretection by adopting tunable light source
06/09/2004CN1503490A Light signal converter, light encoder, light decoder and CDMA communication
06/09/2004CN1503479A Cross-processing method for float pointer
06/09/2004CN1503478A Method for checking multiplex section state
06/09/2004CN1503477A Wave division multiplexer
06/09/2004CN1503476A Optical signal receiving circuit and optical signal receiving semciconductor device
06/09/2004CN1503459A Protocol conversion device and method based on text character stream report
06/09/2004CN1503044A Extendible Ruman amplifier and control method thereof
06/09/2004CN1503020A Fabry-Perot laser apparatus mode-locked to multi-frequency lasing light source and optical transmission apparatus using the same
06/09/2004CN1153394C WDM transmitter and receiver
06/09/2004CN1153393C Signal monitoring apparatus for wavelength division multiplexed optical telecommunication networks
06/09/2004CN1153383C Optical fibre amplifier having controlled gain
06/09/2004CN1153382C Optical pulse transmission system and method
06/09/2004CA2451888A1 A method and system for light path monitoring in an optical communication network
06/08/2004US6748342 Method and monitoring device for monitoring the quality of data transmission over analog lines
06/08/2004US6748181 Optical transmitter provided with optical output control function
06/08/2004US6748180 Capacitor regulated high efficiency driver for a light emitting diode
06/08/2004US6748179 WDM channel monitoring system and method
06/08/2004US6748178 Optical transmission line
06/08/2004US6748177 Multiple degree of freedom bimorph positioner and controller
06/08/2004US6748176 Optical dropping apparatus and optical add/drop multiplexer
06/08/2004US6748175 Optical ring network having enhanced security and reduced loss
06/08/2004US6748174 WDM optical network with passive pass-through at each node
06/08/2004US6748173 Optical transmission system and optical transmission apparatus used therefor
06/08/2004US6748172 Multi-channel light source generator in a WDM optical communication system
06/08/2004US6748170 Method for optimizing a mostly optical network
06/08/2004US6748169 Method for measuring the signal quality of an optical data signal
06/08/2004US6748152 Optical transmission system
06/08/2004US6748150 Apparatus and method for managing dispersion within an optical add/drop module
06/08/2004US6748142 Integrated optical dual dispersion compensator for compensating both chromatic and polarization mode dispersion
06/08/2004US6748136 Wide band Raman amplifiers
06/08/2004US6748135 Method for determining interactions between a number of optical channels in a wavelength division multiplexed signal
06/08/2004US6748127 Transmission of orthogonal circular polarizations on a fiber
06/08/2004US6748126 System for polarization mode dispersion compensation
06/08/2004US6747792 Optical amplifying method
06/08/2004US6747791 Optical amplifier with a spectral gain monitor using a volume phase grating
06/08/2004US6747790 Optical amplifier for amplifying multi-wavelength light
06/08/2004US6747788 Optical fiber amplifier and dispersion compensating fiber module for optical fiber amplifier
06/08/2004US6747565 Remote control signal reception device
06/06/2004CA2800487A1 Converting between signaling formats in an optical virtual private network (ovpn)
06/06/2004CA2800395A1 Converting between signaling formats in an optical virtual private network (ovpn)
06/05/2004CA2449592A1 Method and apparatus for optical add/drop multiplexing in optical networks
06/05/2004CA2435193A1 Path segment protecting p-cycles
06/05/2004CA2435131A1 Method and system for operating a plurality of electronic variable optical attenuators (evoas)
06/05/2004CA2434115A1 Method for design of networks based on p-cycles
06/05/2004CA2429083A1 Method and apparatus for controlling a variable optical attenuator in an optical network
06/03/2004WO2004047472A1 Optical fiber coupling configurations for a main-remote radio base station and a hybrid radio base station
06/03/2004WO2004047344A2 Methods and apparatuses to provide a broadband light source with two or more output ports
06/03/2004WO2004047343A1 Limiter for selectively attenuating modulation sidebands of a rf modulated light wave
06/03/2004WO2004047342A1 Method for data transmission in optical communication systems
06/03/2004WO2004047341A1 Transmission apparatus and transmission apparatus path selection method
06/03/2004WO2004047340A2 Transmitter and method using half rate data streams for generating full rate modulation on an optical signal
06/03/2004WO2004047339A2 Fiber amplifier having a non-doped inner core and at least one doped gain region
06/03/2004WO2004047317A2 Optical preamplifier with received signal strength indicating function
06/03/2004WO2004047151A2 Optical transceiver module with improved ddic and methods of use
06/03/2004WO2004046763A2 Method and apparatus for providing controllable second-order polarization mode dispersion
06/03/2004WO2004034613A3 Devices and methods for dynamic dispersion compensation
06/03/2004WO2004028091A3 Optical network with distributed sub-band rejections
06/03/2004WO2004021612A3 Method for determining the gain spectrum of a raman amplifier in a wdm-transmission system
06/03/2004WO2004017474A3 Photonic devices and pics including sacrificial testing structures and method of making the same
06/03/2004WO2004001916A3 Crosstalk compensation engine for for reducing signal crosstalk effects within a data signal
06/03/2004WO2003005613A8 Opto-electronic transceiver module and method for receiving optical signals
06/03/2004US20040106435 Distributed digital antenna system
06/03/2004US20040106377 Communications interface device for receiving digital signals
06/03/2004US20040105687 Method of optimizing output signal of optical receiver using FEC and optical receiving system using the method
06/03/2004US20040105686 Optical transmission system using optical phase modulator
06/03/2004US20040105685 Optical fibre communication system
06/03/2004US20040105684 Optical dispersion monitoring apparatus and optical dispersion monitoring method, and optical transmission system using same
06/03/2004US20040105683 Polarization mode dispersion controller device and method for its operation
06/03/2004US20040105682 Electrical domain mitigation of polarization dependent effects in an optical communications system
06/03/2004US20040105680 Bidirectional transceiver and method for driving the same
06/03/2004US20040105679 System and method for protecting eye safety during operation of a fiber optic transceiver
06/03/2004US20040105678 Method and apparatus for providing simultaneous channel power equalization and monitoring
06/03/2004US20040105676 Video delivering system and video delivering device for vehicle
06/03/2004US20040105639 Optical system module
06/03/2004US20040105613 Optoelectronic module with integrated loop-back capability
06/03/2004US20040105609 Optoelectronic signal transmission semi-conductor element and method for producing a semi-conductor element of said type
06/03/2004US20040105470 Method for reducing non-linearities in a laser communication system
06/03/2004US20040105468 Open-Path Laser/Optical Communication Systems and Methods Utilizing Wavelengths Between Atmospheric and Gaseous Absorption Lines
06/03/2004US20040105456 Digital cross-connect
06/03/2004US20040105451 Methods and apparatus for improved communications networks
06/03/2004US20040105364 Wavelength associative addressing system for WDM type light packet steering
06/03/2004US20040105144 Optical amplifier with a spectral gain monitor using a volume phase grating
06/03/2004US20040105136 Interconnections and protection between optical communications networks