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)
05/2005
05/17/2005US6895183 Optical add-drop multiplexer
05/17/2005US6895182 Optical ring transmission system using squelch method
05/17/2005US6895153 Optical fiber for wavelength division multiplex transmission networks
05/17/2005US6895142 Branching unit
05/17/2005US6895141 Control method and device for optical filter, and optical node device
05/17/2005US6895092 Cryptographic key distribution method and apparatus thereof
05/17/2005US6894831 Pump assembly employing coupled radiation sources for multiple fibers
05/17/2005US6894830 Bi-directional optical-amplifier module
05/17/2005US6894829 Optical amplifier modules
05/17/2005US6894789 Method of extending the capture range of a wavelength monitor and a wavelength monitor and laser system therefor
05/17/2005US6894780 Pilot tone multiplexing of polarization states in heterodyne optical component analysis
05/17/2005US6894568 Transimpedance amplifier with receive signal strength indicator
05/17/2005US6894273 Systems and methods for producing modulated light beams
05/17/2005US6893346 System, method, and apparatus for bi-directional infrared communication
05/12/2005WO2005043787A1 Components for optical qubits in the radio frequency basis
05/12/2005WO2005043782A1 Infrared receiver unit and infrared headphone/hearing aid
05/12/2005WO2005043317A2 System and method for adjusting soft decision thresholds in a soft-decision error correction system
05/12/2005WO2005043199A2 Cable station for an undersea optical transmission system
05/12/2005WO2005043180A2 Wave detection methods and apparatus
05/12/2005WO2005019885A3 Dispersion compensated optical fiber transmission system and module including micro-structured optical fiber
05/12/2005WO2005002092B1 Optical packet exchanger
05/12/2005WO2004106997A3 Laser driver circuit and system
05/12/2005US20050100351 Quantum communication system and a receiver for a quantum communication system
05/12/2005US20050100350 Optical receiving device
05/12/2005US20050100349 Optical receiver
05/12/2005US20050100347 Optical data transmitting apparatus and method
05/12/2005US20050100346 Optical transmitter for use in high-density wavelength division multiplexing (WDM) optical transmission system
05/12/2005US20050100345 Monolithic transmitter/receiver photonic integrated circuit (Tx/RxPIC) transceiver chip
05/12/2005US20050100344 System for coherent optical communication
05/12/2005US20050100343 Raman amplification repeater and optical transmission system using the same
05/12/2005US20050100342 Optical dispersion compensation system and method in optical communication system
05/12/2005US20050100341 Optical transmission apparatus and electronic equipment provided with same
05/12/2005US20050100339 System and method of free-space optical satellite communications
05/12/2005US20050100281 Phase optimization apparatus and method for obtaining maximum extinction ratio in mach-zehnder interferometer wavelength converter using cross phase modulation of semiconductor optical amplifier
05/12/2005US20050100276 Wavelength selective optical device and method of tuning a wavelength characteristic of the same
05/12/2005US20050100274 Light dispersion compensating element and composite type light dispersion compensating element using that element and light dispersion compensating method using that element
05/12/2005US20050100273 Bidirectional optical triplexer
05/12/2005US20050100267 Optical wavelength conversion apparatus and method using injection locking of fabry-perot laser diode
05/12/2005US20050099953 Method and system for network wide fault isolation in an optical network
05/12/2005US20050099889 Fiber-optic seismic array telemetry, system, and method
05/12/2005US20050099676 Raman amplifier and optical relay transmission system
05/12/2005US20050099675 Long-wavelength-band gain-controlled optical amplifier
05/12/2005US20050099419 Method and system for fault isolation within a network element in an optical network
05/12/2005US20050098708 Optical sampling measurement apparatus and optical sampling measurement method
05/12/2005CA2544388A1 Cable station for an undersea optical transmission system
05/12/2005CA2540112A1 System and method for adjusting soft decision thresholds in a soft-decision error correction system
05/11/2005EP1530309A1 Polarization mode dispersion compensator, polarization mode dispersion compensating method, and its application to optical communication system
05/11/2005EP1530308A2 Method and apparatus for implementing optical supervisory channel using broadband noise modulation
05/11/2005EP1529360A2 Integrated post-amplifier and laser driver assembly with digital control interface
05/11/2005EP1529327A1 Apparatus and method for measurement of dynamic laser signals
05/11/2005EP1529238A2 Scheme for controlling polarization in waveguides
05/11/2005EP1472764A4 Method for configuring a laser operating system
05/11/2005EP1402672B1 Optical temporal demultiplexer
05/11/2005EP1402660B1 Opto-electronic transceiver module and method for receiving optical signals
05/11/2005EP1311882A4 Optical fiber system
05/11/2005EP0960491B1 Optical fiber amplifier having variable gain
05/11/2005CN1614944A Dynamic distribution control of upward band width in passive optical network
05/11/2005CN1614911A Configurator tool for optical networking devices
05/11/2005CN1614910A Raman amplification repeater and optical transmission system using the same
05/11/2005CN1614909A Method and apparatus for implementing optical supervisory channel using broadband noise modulation
05/11/2005CN1614908A On-line dispersing monitor based on semiconductor light amplifier frequency shift effect
05/11/2005CN1614498A Phase optimization apparatus and method
05/11/2005CN1614496A 光学放大器 Optical amplifiers
05/11/2005CN1614455A Optical fibre phase modulation and feedback white light interference system
05/11/2005CN1614454A Wavelength selective optical device and method of tuning a wavelength characteristic of the same
05/11/2005CN1201513C Bragg grating with new sampling structure for compensating dispersion and polarization mode dispersion and its manufacture
05/10/2005US6892032 WDM optical network with passive pass-through at each node
05/10/2005US6892031 Signal processing system of multiplexed fiber bragg grating sensor using CDMA
05/10/2005US6892015 Optical pulse waveform conversion
05/10/2005US6892003 Variable dispersion compensator and optical transmission system
05/10/2005US6892001 Optical packet header identifier, optical router incorporating the same therein, and optical routing method using the router
05/10/2005US6891995 Wavelength division multiplex transmission system
05/10/2005US6891987 Multi-aperture beam steering system with wavefront correction based on a tunable optical delay line
05/10/2005US6891981 Optical transmission apparatuses, methods, and systems
05/10/2005US6891900 Demodulating circuit and optical receiving circuit
05/10/2005US6891867 Control method and apparatus for stabilizing optical wavelength
05/10/2005US6891674 Methods and apparatus for frequency shifting polarization mode dispersion spectra
05/10/2005US6891663 Optical amplifier for amplifying a wavelength division multiplexed (WDM) light including light in different wavelength bands
05/10/2005US6891662 Optical amplifier and method for amplifying wavelength multiplexed transmission signal light
05/10/2005US6891661 Optical amplifier with pump light source control for Raman amplification
05/10/2005US6891660 Stimulated brillouin scattering optical amplifier
05/10/2005US6891651 EML transmitter applying band stop filter
05/10/2005US6891408 Current pulse receiving circuit
05/10/2005US6891402 Clock's out-of-synchronism state detection circuit and optical receiving device using the same
05/10/2005US6891149 Optical phase detector
05/10/2005CA2352378C Chalcogenide glass based raman optical amplifier
05/10/2005CA2314854C Optical communication system optically combining both baseband and passband signals
05/10/2005CA2295264C Method of making optical chirped grating with an intrinsically chirped grating and external gradient
05/06/2005WO2005041451A1 Optical network and amplifier node therefore
05/06/2005WO2005041450A1 Retroreflective devices and systems
05/06/2005WO2005041449A1 Method for characterising an optical fibre link
05/06/2005WO2005006576A3 Controlling the extinction ratio in optical networks
05/06/2005WO2005001520A3 Serial routing of optical signals
05/06/2005WO2004112264A3 System and method for performing high-speed communications over fiber optical networks
05/05/2005US20050096756 Electric control system
05/05/2005US20050095994 Transmitting and receiving device
05/05/2005US20050095013 Optical receiving device
05/05/2005US20050095012 Method, optical device, and system for optical fiber transmission
05/05/2005US20050095010 Method and apparatus for PPM demodulation using a semiconductor optical amplifier
05/05/2005US20050095009 Optical assembly having cylindrical lenses and related method of modulating optical signals