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)
02/2004
02/12/2004US20040026604 Optical transceiver
02/12/2004DE20318098U1 Intra-red (IR) interface for serial GPS receiver receives data of serial GPS receiver in car with personal digital assistant (PDA) and evaluates them for car position evaluation without additional car board computer
02/12/2004DE19841775B4 Teilnehmernetz mit optischer Faser Subscriber network with optical fiber
02/12/2004DE10048460B4 Raman-Verstärker Raman amplifier
02/12/2004DE10030476B4 Wellenlängen-Multiplexer und Wellenleitergitter in Array-Form mit Justierwellenleitern und Vorrichtung zur Justierung Wavelength division multiplexer and waveguide grating in array form with Justierwellenleitern and apparatus for adjusting
02/12/2004DE10010453B4 Anordnung zur Erzeugung eines Wellenlängen-Multiplexsignals mit geringen Kanalabständen Arrangement for generating a wavelength-multiplexed signal with small channel spacings
02/12/2004CA2494759A1 A system and method for increasing bandwidth efficiency and throughput of a data transmission network
02/12/2004CA2494614A1 Transceiver with programmable signal parameters
02/11/2004EP1388963A2 Wavelength division multiplexing passive optical network system
02/11/2004EP1388961A1 Adaptive feedback control method for chromatic dispersion compensation
02/11/2004EP1388960A1 Optical amplifier with automatic gain control
02/11/2004EP1388959A2 System and method for programmably adjusting gain and frequency response in a 10-gigabit ethernet/fibre channel system
02/11/2004EP1388958A2 Laser communication system
02/11/2004EP0893932B1 System and method for transmitting information for amphibious traveling vehicle and system for controlling operation of the vehicle
02/11/2004CN2603412Y Raman gain reel time dynamic controlled and compensated Raman optical fibre amplifier
02/11/2004CN1475058A Network comprising converters between electronic and optical signal
02/11/2004CN1475057A Method of power control in optical communication system
02/11/2004CN1474533A Monitoring method and device for wave-length-division multiplexing optical signal/noise ratio
02/11/2004CN1474532A High insulation degree wavelength management module
02/11/2004CN1474521A Light transmission device and method of optimum light return-to-zero code receiving pulse width
02/11/2004CN1474520A Optical network system detection method
02/11/2004CN1474208A Method for improving pumping performance of remote pump using filter
02/11/2004CN1474207A Conic optical fibre micro spherical discrete spectrum amplifier
02/11/2004CN1474206A Dispersion stable low dispersion slope optical fibre for metropolitan area network
02/11/2004CN1474205A Dispersion stable non-zero dispersion displacement single mode submarine optical fibre
02/11/2004CN1474204A Dispersion stable three wave length window non-zero dispersion displacement single mode optical fibre
02/11/2004CN1474203A Dispersion stable low dispersion slope sub-full wave opltical fibre
02/11/2004CN1138377C Single-side zero-angle up-and-down carriers division multiplex/demultiplex and optical insertion multiplex devices
02/11/2004CN1138359C Apparatus and method for improved connectivity in wireless optical communication systems
02/11/2004CN1138358C Optical cable real time monitoring system
02/11/2004CN1138357C Optical detecting unit and electric device using same
02/11/2004CN1138355C Optical remote control interface system and method
02/11/2004CN1138177C Optical device
02/10/2004US6690894 Multilevel optical signals optimized for systems having signal-dependent and signal-independent noises, finite transmitter extinction ratio and intersymbol interference
02/10/2004US6690893 Optical transmitter
02/10/2004US6690890 Single fiber Sagnac interferometer based secure communication system
02/10/2004US6690889 Device for compensating polarization dispersion in an optical transmission system
02/10/2004US6690888 Method for establishing and maintaining optical, open-air communications link
02/10/2004US6690886 Suppression of four-wave mixing in ultra dense WDM optical communication systems through optical fibre dispersion map design
02/10/2004US6690884 Optical transmission systems including error correction and protection apparatuses and methods
02/10/2004US6690861 Arrayed waveguide grating, arrayed waveguide grating module, arrayed waveguide grating module waveguide compensation method, optical communication system
02/10/2004US6690859 Device for comparing wavelength values and multiplexing and a system for monitoring monochromatic sources
02/10/2004US6690853 Tunable DWDM demultiplexer
02/10/2004US6690847 Optical switching element having movable optically transmissive microstructure
02/10/2004US6690508 Control system and method for an optical amplifier
02/10/2004US6690506 Control architecture and method for optical amplifiers
02/10/2004US6690505 Optical network equipment with gain transient control and automatic drift compensation
02/10/2004US6690503 Fault tolerant optical amplifier
02/10/2004US6690340 Light-emitting diode driving circuit and optical transmission module using the same
02/10/2004US6690003 Laser actuated remote operator
02/10/2004US6690002 Photodetector array and optical communication monitor module using the same
02/05/2004WO2004012369A2 Methods and apparatus for improved communications networks
02/05/2004WO2004012365A1 Tunable chromatic dispersion compensator
02/05/2004WO2004012364A1 Optical amplifier control
02/05/2004WO2004012363A1 Method and apparatus for maintaining an optical wireless link
02/05/2004WO2004012309A2 Using optical solitons to increase figure-of-merit of laser beam deflection devices
02/05/2004WO2004011950A2 High sensitivity, high resolution detection of signals
02/05/2004WO2004011897A1 Auto-characterization of optical devices
02/05/2004WO2003081789A3 Tunable pulse width generation of return-to-zero format for system optimization
02/05/2004WO2003079078A3 Dispersion compensation optical fiber and optical transmission line using same
02/05/2004WO2003076979A3 Split-band depressed-profile amplifier and system
02/05/2004WO2003047145A3 Methods and devices to minimize the optical loss when multiplexing a plurality of tunable laser sources
02/05/2004WO2002077573A3 Transceiver device for cooperation with an optical fiber
02/05/2004WO2002075974A3 Wavelength stabilisation in optical communications systems
02/05/2004WO2002071661A3 Optical communication system and apparatus for compensation or emulation of pmd effects
02/05/2004US20040023631 Method and system for rejecting noise in information communication
02/05/2004US20040022547 Kalman filter intensity noise subtraction for optical heterodyne receivers
02/05/2004US20040022546 Method and apparatus for compacting data in a communication network
02/05/2004US20040022545 Optical transport system architecture for remote terminal connectivity
02/05/2004US20040022544 Transceiver with programmable signal parameters
02/05/2004US20040022543 Optoelectronic transceiver having dual access to onboard diagnostics
02/05/2004US20040022538 High sensitivity, high resolution detection of signals
02/05/2004US20040022537 Laser communication system
02/05/2004US20040022536 Broadcast/communication unified passive optical network system
02/05/2004US20040022535 System and method for preventing signal loss in an optical communications network
02/05/2004US20040022486 Eye-diagram mask for optical pulses
02/05/2004US20040022339 Clock recovery circuit
02/05/2004US20040022334 Digital iterative gain control
02/05/2004US20040022306 Speed negotiation for serial transceivers
02/05/2004US20040022304 Ultra-wideband communication though local power lines
02/05/2004US20040022284 Jitter suppression techniques for laser driver circuits
02/05/2004US20040021926 Laser pulse shaping device
02/05/2004US20040021829 Multi-level optical signal generation
02/05/2004DE19963802B4 Verfahren zur Phasensynchronisierung optischer RZ-Datensignale Method of phase synchronization of optical RZ data signals
02/05/2004DE19959813B4 Synchrones digitales Nachrichtenübertragungssystem Synchronous digital communication system
02/05/2004DE19936421B4 Optischer Hinzufügungs-Wegfall Multiplexer und den Multiplexer verwendende optische Wellenlängenmultiplexverbindung In addition, optical multiplexers and articulating eliminating the multiplexer used wavelength division multiplexed optical link
02/05/2004DE19717926B4 Transceiver zur drahtlosen Datenübertragung Transceiver for wireless data transmission
02/05/2004DE10228750A1 Verfahren zur Messung der Signal-Rauschabstände OSNR in einem Wellenlängen-Multiplex(-WDM)-Übertragungssystem Method for measuring the signal-to-noise ratios OSNR in a wavelength division multiplexing (-WDM) transmission system
02/05/2004DE10147892B4 Verfahren zur Übertragung von mindestens einem ersten und zweiten Datensignal im Polarisationsmultiplex in einem optischen Übertragungssystem Method for transmitting at least a first and second data signal in polarization division multiplex in an optical transmission system
02/05/2004DE10132584B4 Verfahren und Anordnung zur Ermittlung und Trennung von Einzelkanaleffekten bei der optischen Übertragung eines Wellenlängen-Multiplex(-WDM)-Signals Method and apparatus for determining and Separation of Single-channel effects in the optical transmission of a wavelength division multiplexing (-WDM) signal
02/05/2004CA2494407A1 High sensitivity, high resolution detection of signals
02/05/2004CA2493114A1 Methods and apparatus for improved communications networks
02/05/2004CA2492326A1 Tunable chromatic dispersion compensator
02/04/2004EP1387515A2 Method for assigning wavelengths in wavelength division multiplexing ring communication network
02/04/2004EP1387511A2 Broadcast/communication unified passive optical network system
02/04/2004EP1387510A1 One-core two-way optical transmission system
02/04/2004EP1387508A2 All-optical regenerator retiming, reshaping and retransmitting on optical signal
02/04/2004EP1387507A1 Optical communication system using multiple Raman Amplifiers with a flat total gain
02/04/2004EP1387506A2 Jitter suppression techniques for laser driver circuits
02/04/2004EP1387505A2 Kalman filter intensity noise substraction for optical heterodyne receivers