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)
03/2002
03/14/2002US20020030876 Multiplex optical communication system
03/14/2002US20020030875 Method for requesting grant for MAC protocol in PON
03/14/2002US20020030874 Transmitting/receiving facility and method for transmitting broadband signals as well as transmitting/receiving facility for receiving broadband signals
03/14/2002US20020030873 Method and transceiver for through-air optical communications
03/14/2002US20020030872 Method and apparatus for multiboard fiber optic modules and fiber optic module arrays
03/14/2002US20020030871 Low power portable communication system with wireless receiver and methods regarding same
03/14/2002US20020030870 Radio base station system and central control station with unified transmission format
03/14/2002US20020030869 Optical cross connect unit, optical add-drop multiplexer, light source unit, and adding unit
03/14/2002US20020030868 Monitoring of signal wavelengths in optical fiber
03/14/2002US20020030865 Optical distribution network system that performs system switching only when total operation condition is improved
03/14/2002US20020030186 Quantum circuit
03/14/2002DE10040791A1 Verfahren und Vorrichtung zur Bestimmung und Kompensation der Verkippung des Spektrums in einer Lichtleitfaser einer Datenübertragungsstrecke Method and apparatus for determining and compensating for the tilt of the spectrum in an optical fiber of a data transmission path
03/14/2002CA2421522A1 Active equipment protection methods and apparatus
03/14/2002CA2421365A1 Pump power monitor system and method for gain control of optical amplifier
03/14/2002CA2421310A1 Dispersion map for slope compensating fibers
03/14/2002CA2421125A1 Negative-dispersion optical fiber and optical transmission line incorporating the same
03/14/2002CA2420447A1 Optical signal transmitter and optical signal transmitting method
03/14/2002CA2357246A1 Modulator and method of modulating optical carrier with clock signal before or after the carrier is modulated with data pulse
03/13/2002EP1187508A2 Method, network and packet router for optical routing using multiple wavelength labels
03/13/2002EP1187383A2 Timing circuitry for muxing/demuxing of optical communication signals
03/13/2002EP1187374A1 Bit-rate-independent optical receiver
03/13/2002EP1187373A2 Bit rate detection circuit and algorithm for optical networks
03/13/2002EP1187372A2 Apparatus and method for bit rate control of optical receiver
03/13/2002EP1187276A2 Optical amplifier for wide band raman amplification of wavelength division multiplexed (WDM) signal lights
03/13/2002EP1187152A2 Rotary contactless connector and non-rotary contactless connector
03/13/2002EP1186919A1 Optical fiber and optical transmission line comprising the same
03/13/2002EP1186132A2 Optical amplifier having substantially uniform spectral gain
03/13/2002EP1186131A2 Method and system for increasing a number of information channels carried by optical waveguides
03/13/2002EP1021873A4 System for providing location-specific data to a user
03/13/2002EP0950326A4 Wireless communications station and system
03/13/2002EP0917726A4 Photonic heterodyning having an image component separator
03/13/2002CN2482283Y Optic wavelength division multiplex device
03/13/2002CN2482280Y Fibre-optic signal joint
03/13/2002CN1339891A Light add and drop multiplexer for multi-wave length adaptive light power equalization
03/13/2002CN1339889A Optic transmission system
03/12/2002US6356684 Adjustable optical fiber grating dispersion compensators
03/12/2002US6356680 Method and system for removal of low order optical transmission modes to improve modal bandwidth in a multimode optical fiber computer network
03/12/2002US6356387 Tellurite glass, optical amplifier, and light source
03/12/2002US6356386 Method and apparatus for stabilizing transient control in amplified optical networks
03/12/2002US6356385 Inhomogeneous broadening to modify the gain of an optical amplifier
03/12/2002US6356384 Broadband amplifier and communication system
03/12/2002US6356383 Optical transmission systems including optical amplifiers apparatuses and methods
03/12/2002US6356382 Optical wavelength converter with active waveguide
03/12/2002US6356375 Apparatus and method for an integrated photodiode in an infrared receiver
03/12/2002US6356374 Digital optical transmitter
03/12/2002US6356369 Digital optical transmitter for processing externally generated information in the reverse path
03/12/2002US6356368 Optical supervisory transmission signal control device
03/12/2002US6356367 Open fiber control propagation in multi-link fiberoptic connections
03/12/2002US6356251 Matrix type liquid-crystal display with optical data communication feature
03/12/2002US6355936 Circuit for electrical insulation between a two-way bus and a peripheral circuit
03/07/2002WO2002019588A1 An optical communication network
03/07/2002WO2002019576A2 Optical transmission link with low slope, raman amplified fiber
03/07/2002WO2002019575A2 Method and apparatus for determining a fiber plant gain transfer function to control distributed gain
03/07/2002WO2002019574A1 All-optical regenerator for wavelength-division multiplexed signals
03/07/2002WO2002019573A2 System and method for transmitting information modulated radio frequency signals using infrared transmission
03/07/2002WO2002019572A1 Method for starting up optical communication system, method for extending/reducing channels, and computer readable recorded medium
03/07/2002WO2002019571A1 Shared multi-channel optical interface
03/07/2002WO2002019570A1 Method and device for protecting a centralised wdm optical ring network transporting data flow in connected mode
03/07/2002WO2002019023A1 Light amplifier using raman amplification and control method thereof
03/07/2002WO2002019016A1 High performance polarization controller and polarization sensor
03/07/2002WO2002019001A2 Compensation and control of both first-order and higher-order polarization-mode dispersion
03/07/2002WO2002018999A1 Network healing smart fiber optic switch
03/07/2002WO2001076022A3 Optical amplifier
03/07/2002WO2001067646A3 Optical channel monitoring system with self-calibration
03/07/2002WO2001065739A3 Gain control in optical amplifiers
03/07/2002WO2001065738A3 Optical communication system
03/07/2002WO2001056212A3 Digital signal processing optical transmitter
03/07/2002US20020028052 Dispersion map for slope compensating fibers
03/07/2002US20020028049 Optical networking unit employing optimized optical packaging
03/07/2002US20020028048 Method and apparatus for multiboard fiber optic modules and fiber optic module arrays
03/07/2002US20020028043 Wireless optical communications without electronics
03/07/2002US20020028039 4-port wavelength selective router
03/07/2002US20020028035 Optical switch changeover controlling method, optical node device and optical switch system
03/07/2002US20020027865 Low-birefringence optical fiber for use in an optical data storage system
03/07/2002US20020027703 Optical amplifier
03/07/2002US20020027695 Bit-rate-independent optical receiver
03/07/2002US20020027694 Self-healing apparatus and method of optical receiver
03/07/2002US20020027692 Bit-phase synchronized optical pulse stream local generator
03/07/2002US20020027691 Wireless optical communications without electronics
03/07/2002US20020027690 Fiber optic transceiver employing analog dual loop compensation
03/07/2002US20020027689 Fiber optic transceiver employing front end level control
03/07/2002US20020027688 Fiber optic transceiver employing digital dual loop compensation
03/07/2002US20020027687 Method and an amplifier unit for the transmission of data signals via an optical fiber
03/07/2002US20020027686 Method for routing optical packets using multiple wavelength labels, optical packet router using multiple wavelength labels, and optical packet network that uses multiple wavelength labels
03/07/2002US20020027685 Bidirectional add/drop multiplexer
03/07/2002US20020027684 Optical transmission of error control data
03/07/2002US20020027682 Optical distribution network system with large usable bandwidth for DBA
03/07/2002US20020027472 Multi-stage bidirectional optical amplifier
03/07/2002US20020027230 Optical tansmitting and receiving device and the manufacturing method
03/07/2002DE10041499A1 Optischer Kanalüberwachungschip Optical channel monitor chip
03/07/2002DE10040472A1 Optical amplifier arrangement e.g. for WDM transmission systems, has variable adjustable attenuator with adjustable slope of attenuation spectrum
03/07/2002DE10040446A1 Cascadable optical amplifier apparatus has power amplification stage with own active fiber and pump signal sources
03/07/2002DE10039951A1 Method for compensating cross-phase modulation in optical fiber amplifiers, involves obtaining control signal from optical wave-length multiplex signal and controlling the phase-modulator to which wave-length multiplex signal is supplied
03/07/2002DE10039950A1 Bidirektionaler optischer Verstärker Bidirectional optical amplifier
03/06/2002EP1185129A2 Optical distribution network system that performs system switching only when total operation condition is improved
03/06/2002EP1185126A2 Optical distribution network system with large usable bandwidth for DBA
03/06/2002EP1185017A1 An optical communication network
03/06/2002EP1185008A2 An optical signal processor
03/06/2002EP1185007A2 Method, device, and system for processing optical signals
03/06/2002EP1185006A2 Optical transmitter with bandwidth restriction