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)
09/2005
09/13/2005US6944405 Bit-rate-independent optical cross-connect device in optical transmission system
09/13/2005US6944404 Network transceiver for extending the bandwidth of optical fiber-based network infrastructure
09/13/2005US6944403 MEMS based over-the-air optical data transmission system
09/13/2005US6944402 Extended range infrared communication (ERIC) for an infrared associated (IrDA) compliant portable device
09/13/2005US6944401 Gain equalization in DWDM networks
09/13/2005US6944400 Optical path switching device
09/13/2005US6944399 Methods of signal substitution for maintenance of amplifier saturation
09/13/2005US6944367 Optical source generator for wavelength division multiplexing optical communication systems
09/13/2005US6944362 Optical switch having a autorestoration feature for switching from a backup optical path to a primary optical path
09/13/2005US6943951 Optical component and dispersion compensation method
09/13/2005US6943940 Optical amplifier for amplifying a wavelength division multiplexed (WDM) light including light in different wavelength bands
09/13/2005US6943937 Optical amplifier performance controller and method of use
09/13/2005US6943935 Dispersion-managed cable for raman-assisted transmission
09/13/2005US6943630 Amplifier circuit, an optical communication system and a method of controlling amplification
09/09/2005WO2005083915A1 Frequency conversion method and base station in radio optical fusion communication system
09/09/2005WO2005083914A2 Recovering energy from an irda/remote control transmitter circuit
09/09/2005WO2005083913A1 A processing method for multiplexing segment ring link in automatic exchange optical network
09/09/2005WO2005083852A1 An apparatus for concatonating a plurality of undersea pressure vessels each housing an optical amplifier module
09/09/2005WO2005083502A1 Optical clock extracting device and method
09/09/2005WO2005083499A1 Reroutable protection schemes of an optical network
09/09/2005WO2005083482A1 Dispersion correction fiber, transmission system and method of operating same
09/09/2005WO2005082035A2 A method and apparatus for optical performance monitoring
09/09/2005WO2005081921A2 Temperature control for coarse wavelength division multiplexing systems
09/09/2005WO2005081718A2 Ultra-wideband communication through a power grid
09/09/2005WO2004092347A3 Etalon based compact dispersion module
09/08/2005US20050196179 Receiving apparatus, transmitting apparatus, and communication system
09/08/2005US20050196178 Receiving apparatus, transmitting apparatus, and communication system
09/08/2005US20050196177 Laser driver circuit with signal transition enhancement
09/08/2005US20050196176 Equalization strategy for dual-polarization optical transport system
09/08/2005US20050196175 Method and apparatus for obtaining status information concerning an in-service optical transmission line
09/08/2005US20050196174 Cotdr arrangement with swept frequency pulse generator for an optical transmission system
09/08/2005US20050196173 Receive optical assembly with angled optical receiver
09/08/2005US20050196172 Programmable transition time adjustment mechanism
09/08/2005US20050196171 Consistency checking over internal information in an optical transceiver
09/08/2005US20050196170 Method and apparatus for free space optical communication using incoherent light
09/08/2005US20050196169 System and method for communicating traffic between optical rings
09/08/2005US20050196167 Method and apparatus for obtaining status information concerning optical amplifiers located along an undersea optical transmission line using COTDR
09/08/2005US20050196165 Multi-level memory access in an optical transceiver
09/08/2005US20050196111 Optical transceiver module with onboard diagnostics accessible via pins
09/08/2005US20050196098 Optical switch
09/08/2005US20050195866 Circuit for filtering a laser signal
09/08/2005US20050194514 For wavelength division multiplexed light utilizing a virtually imaged phased array; reduction of the interchannel loss deviation improves accuracy
09/08/2005DE19917596B4 Bidirektionales optisches Kommunikationsbauteil und bidirektionale optische Kommunikationsvorrichtung Bi-directional optical communication component and bidirectional optical communication device
09/08/2005DE102004008681A1 Verfahren zur Energieübertragung mittels kohärenter elektromagnetischer Strahlung A method for power transmission by means of coherent electromagnetic radiation
09/07/2005EP1571771A2 System and method for communicating traffic between optical rings
09/07/2005EP1571765A2 Optical synchronizer
09/07/2005EP1571764A1 Apparatus and method for phase synchronization control in RZ optical transmitter
09/07/2005EP1571763A2 Optical transmitting/receiving method and system, and optical communication network
09/07/2005EP1571636A1 Transmission device for remote control systems
09/07/2005EP1570687A2 Distributed signal summation and gain control
09/07/2005EP1570626A2 Distributed digital antenna system
09/07/2005EP1570595A1 Optical communication line and system with reduced polarization mode dispersion
09/07/2005EP1570594A1 Continuous wave pumped parallel fiber optical parametric amplifier
09/07/2005EP1570593A2 Coherent optical detection and signal processing method and system
09/07/2005EP1433278B1 Channel identification in communications networks
09/07/2005EP1412966A4 Multi-wavelength semiconductor laser arrays and applications thereof
09/07/2005CN2724307Y Full glass substrate dense wave division duplex device
09/07/2005CN1666564A Path protection method for WDM network and nodes thereof
09/07/2005CN1666451A Method and device for optical data transmission
09/07/2005CN1666445A 光接收机电路 Optical receiver circuit
09/07/2005CN1666427A Information retrieval system based on position of the light source
09/07/2005CN1666275A Optical signal receiving unit and apparatus for reproducing information
09/07/2005CN1665344A All-optical active optical fiber network back board system
09/07/2005CN1665343A All-optical passive optical fiber network back board system
09/07/2005CN1665297A Electronic monitoring and management system for road traffic
09/07/2005CN1665279A Signal integration device and communication system
09/07/2005CN1665175A Method for implementing power detection based automatic power control in optical network
09/07/2005CN1665174A Apparatus for providing node protection in optical network and implementing method thereof
09/07/2005CN1665173A Optical fibre fault monitoring and positioning system for communication network and method thereof
09/07/2005CN1218549C Local area network bus type optical fiber network failure wave recording and data collecting system with multi-controller
09/07/2005CN1218515C Optical fiber amplifier having noise filter
09/07/2005CN1218514C Method for conforming target of radio communication connection
09/07/2005CN1218213C Adjustable digital electromagnetic driven light-barrier attenuator
09/06/2005US6941081 Method and apparatus for polarization measurements
09/06/2005US6941080 Method and apparatus for directly modulating a laser diode using multi-stage driver circuitry
09/06/2005US6941079 Optical demultiplexer with multi-channel power control and tilt compensation
09/06/2005US6941078 Method and system for communicating a clock signal over an optical link
09/06/2005US6941077 Memory mapped monitoring circuitry for optoelectronic device
09/06/2005US6941076 Tone modulation for out-of-band communication in a free-space optical communication link
09/06/2005US6941075 Wavelength division multiplexing optical transmission method and system
09/06/2005US6941074 Bidirectionally transmittable optical wavelength division multiplexed transmission system
09/06/2005US6941071 Test method and apparatus for parallel optical transceivers using serial equipment
09/06/2005US6941054 Optical transmission link with low slope, raman amplified fiber
09/06/2005US6941045 Tunable dispersion compensator
09/06/2005US6941044 Tunable optical structure for the compensation of chromatic dispersion in a light signal
09/06/2005US6941037 Optical fiber transmission system using RZ pulses
09/06/2005US6941034 Optical switch and adjustment method thereof
09/06/2005US6941032 Passive polarization stabilizer
09/06/2005US6940889 Optical pulse source for long haul optical communication systems
09/06/2005US6940601 Method and apparatus for estimating chromatic dispersion in fibre bragg gratings
09/06/2005US6940588 Measuring response characteristics of an optical component
09/06/2005US6940477 Digital video signal interface module for transferring signals to a long distance
09/06/2005CA2344869C Apparatus for detecting raman gain in an optical transmission system
09/01/2005WO2005081432A1 Distributed compensation method and distributed compensator
09/01/2005WO2005081431A1 Photonic rf distribution system
09/01/2005WO2005081430A2 Apparatus and method for the delivery of high-energy ultra-short optical pulses from a fibre amplifier
09/01/2005WO2005079416A2 Optical line termination, passive optical network, and method and apparatus for performance monitoring
09/01/2005WO2005079206A2 Optimization of ultra-wideband communication through a wire medium
09/01/2005WO2005019970B1 Communication system and method for an optical local area network
09/01/2005WO2005008388A3 Olt that stores identity numbers of onts