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)
06/2002
06/13/2002WO2002047293A1 Integrated optical time domain reflectometer and optical supervisory network
06/13/2002WO2002047292A1 Interference -robust coded-modulation scheme for optical communications and method for modulating illumination for optical communications
06/13/2002WO2002047277A2 System and method for processing a signal
06/13/2002WO2002047122A2 Methods and apparatus for beaming power
06/13/2002WO2002046835A2 Dynamic gain equalizer for optical amplifiers
06/13/2002WO2002046816A1 Chirped bragg grating reflectors and adjustable dispersion apparatus incorporating such gratings
06/13/2002WO2002009323A3 System and method for improving optical signal-to-noise ratio measurement range of a monitoring device
06/13/2002WO2001095526A3 Method and apparatus for optical signal detection
06/13/2002WO2001086838A3 Method and apparatus for maintaining a pre-determined ratio of a pilot tone power and a mean optical output power of an optical signal
06/13/2002WO2001080507A3 Method and apparatus for arbitrary waveform generation using photonics
06/13/2002WO2001080378A3 Optical amplifiers with a simple gain/output control device
06/13/2002WO2001045981A3 Optical free space signalling system
06/13/2002US20020071458 Version with markings to show changes made
06/13/2002US20020071344 Integrated circuit receiver available for infrared or ultrasonic transmission with digital filtering
06/13/2002US20020071173 Dynamically tunable optical amplifier and fiber optic light source
06/13/2002US20020071164 Optically amplified back-up receiver
06/13/2002US20020071163 Optical transmitter and optical transmitting apparatus using the same
06/13/2002US20020071162 Method of implementing optical data transmission of mobile station, data transmission element and mobile station stand
06/13/2002US20020071161 Interference-robust coded-modulation scheme for optical communications and method for modulating illumination for optical communications
06/13/2002US20020071160 Establishment and maintenance of optical links between optical transceiver nodes in free-space optical communications networks
06/13/2002US20020071159 Network transceiver for extending the bandwidth of optical fiber-based network infrastructure
06/13/2002US20020071157 Packet router for use in optical transmission networks
06/13/2002US20020071155 Cross phase modulation suppressing device in wavelength division multiplexing optical transmission system and optical communication system
06/13/2002US20020071153 Method for composite packet-switching over WDM by transparent photonic slot routing
06/13/2002US20020071150 Apparatus and method for controlling routing
06/13/2002US20020071149 Apparatus and method for protection of an asynchronous transfer mode passive optical network interface
06/13/2002US20020071148 Optical communications network and nodes for forming such a network
06/13/2002US20020071147 Method of automatically synchronously testing the infrared equipment of an electronic apparatus
06/13/2002US20020070335 Packaged micromirror assembly with in-package mirror position feedback
06/13/2002DE10061836A1 Lichtwellenleiterkabel und Verfahren zum Übertragen von optischen Signalen, insbesondere nach der Wellenlängenmultiplextechnik Fiber optic cable and method for transmitting optical signals, in particular according to the wavelength multiplexing technique
06/13/2002DE10058774A1 Optical transmitter, especially laser transmitter, has amplifier unit dimensioned so permissible load produced by parallel Ohmic resistance, signal line and transmitter unit impedances
06/13/2002CA2431161A1 Chirped bragg grating reflectors and adjustable dispersion apparatus incorporating such gratings
06/12/2002EP1213945A1 Packet router for an optical transmission network
06/12/2002EP1213944A2 Module and method for reconfiguring optical networks
06/12/2002EP1213865A1 Wavelength division multiplex optical transmitter
06/12/2002EP1213858A2 System for diversity receiver for mitigating the effects of fiber dispersion by separate detection of two transmitted sidebands
06/12/2002EP1213857A1 Point-to-multipoint wide area telecommunications network via atmospheric laser transmission through a remote optical router
06/12/2002EP1213658A2 Optical communication interface module for universal serial bus
06/12/2002EP1213595A2 Chromatic dispersion compensation in a fiber transmission system and compensation fiber
06/12/2002EP1212861A1 Optical fiber ring communication system
06/12/2002EP1212855A1 Apparatus and methods for extracting two distinct frequency bands from light received by a photodiode
06/12/2002EP0892701B1 Electric shaving system
06/12/2002EP0873612A4 Switchable wavelength add/drop component
06/11/2002US6404964 Dispersion managed optical waveguide and system with distributed amplification
06/11/2002US6404959 Diffractive vertical cavity surface emitting laser power monitor and system
06/11/2002US6404952 Optical communication system with chromatic dispersion compensation
06/11/2002US6404951 Transverse spatial mode transformer for optical communication
06/11/2002US6404950 Dispersion-compensating module
06/11/2002US6404949 Optical fiber interface for integrated circuit test system
06/11/2002US6404940 Optical cross connect apparatus and optical network
06/11/2002US6404609 Circuit that reduces the numbers of components needed to transmit data from intrinsically safe to non-intrinsically safe circuits using opto-couplers
06/11/2002US6404540 L-band optical fiber amplifier using seed beam
06/11/2002US6404533 Optical amplitude modulator
06/11/2002US6404528 Receiver for an optical communications system and method for operating such a system
06/11/2002US6404527 Method and apparatus for transmitting a response signal from an optical repeater to a terminal requesting status information
06/11/2002US6404526 WDM system that uses nonlinear temporal gratings
06/11/2002US6404525 Optical add-drop multiplexer
06/11/2002US6404524 Method and system for securing wavelength division multiplex systems
06/11/2002US6404523 Wavelength division multiplexing system and its termination
06/11/2002US6404520 Fault isolation of an optical link by correlating PMD events with other measurements
06/11/2002US6403948 Photo-detecting module having a fiber optic groove on rear surface of integrated circuit device
06/11/2002US6403203 Magnetic recording medium and magnetic recording apparatus using the same
06/11/2002US6402743 Smart recognition apparatus and method
06/11/2002CA2253614C Duobinary coding and modulation technique for optical communication systems
06/11/2002CA2235026C Current control for an analog optical link
06/08/2002CA2327908A1 Apparatus and method for detecting bit disparity within a data stream
06/06/2002WO2002045308A1 Point-to-multipoint passive optical network that utilizes variable-length packets
06/06/2002WO2002045303A1 Method and apparatus for removing non-linear distortion in optic transmitter
06/06/2002WO2002045302A2 Device and method for detecting distortions during optical information transmission
06/06/2002WO2002045301A2 Optically amplified receiver
06/06/2002WO2002045300A1 A transmitter-receiver device and a communication system
06/06/2002WO2002045298A2 Optical shutter
06/06/2002WO2002045297A2 Optical communications using multiplexed single sideband transmission and heterodyne detection
06/06/2002WO2002045255A1 Amplifier circuit, an optical communication system and a method of controlling amplification
06/06/2002WO2002015633A3 Optical transpose system
06/06/2002WO2002009299A3 Method and apparatus for extending fiber transmission distance with multiple pre-emphases in optically amplified dwdm system
06/06/2002WO2002003579A3 System and method for increasing capacity of undersea cables
06/06/2002WO2002001765A3 Optical power and wavelength monitor
06/06/2002WO2001091339A3 Optical transmission systems and methods including optical protection
06/06/2002WO2001086840A3 Polarization mode dispersion (pmd) compensator
06/06/2002WO1996005664A3 Optical synchronisation arrangement, transmission system and optical receiver
06/06/2002US20020068562 Isd wireless network
06/06/2002US20020067890 Arrayed waveguide grating, arrayed waveguide grating module, arraued waveguide grating module waveguide compensation method, optical communication system
06/06/2002US20020067889 Adaptive dispersion compensating element
06/06/2002US20020067883 System and method for increasing channel capacity of fiber-optic communication networks
06/06/2002US20020067747 Method and apparatus for arbitrary waveform generation using photonics
06/06/2002US20020067538 Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied
06/06/2002US20020067537 Dispersion compensating nonlinear polarization amplifiers
06/06/2002US20020067532 Optical receiving apparatus and method
06/06/2002US20020067531 Ultrasonic and infrared transmitter with tunable carrier frequency
06/06/2002US20020067530 Optical communication interface module for universal serial bus
06/06/2002US20020067527 Optical time-division multiplex signal processing apparatus and method, optical time-division multiplex signal receiver
06/06/2002US20020067526 Bi-directional optical add/drop multiplexer
06/06/2002US20020067525 Wavelength division multiplex optical transmission system
06/06/2002US20020067524 Optical communications terminal station, optical signal transmission method, and optical signal increasing method in wavelength multiplexing system
06/06/2002US20020067523 Interconnected broadcast and select optical networks with shared wavelengths
06/06/2002US20020067522 Optical transmission line monitoring apparatus and receiving station
06/06/2002US20020067269 Spread spectrum telemetry of physiological signals
06/06/2002US20020066850 Monolithic loss-of-signal detect circuitry
06/06/2002DE10057659A1 Optical transmission system has cascaded Raman amplifiers with several pump sources with different wavelengths set to achieve flat gain spectrum for signal with several optical channels