Optical communications inventions 09/06

20060210266 - Optical apparatus and optical cross connect apparatus: An optical apparatus is disclosed wherein increase of the number of wavelength selective switches provided for a standby system can be suppressed. The optical apparatus includes a plurality of upstream side optical devices and a plurality of downstream side optical devices configured such that a plurality of output ports to...

20060210267 - Method for adapting an optical transmission unit to a fixed optical transmission link, optical transmission unit and optical receive unit: The invention relates to a method for adapting an optical transmission unit to a fixed optical transmission link, in which the transmission unit measures the properties of the transmission link with respect to possible transmission capacity, as well as an optical transmission unit, and an optical receive unit....

20060210268 - Method and system for establishing transmission priority for optical light-trails: An optical network is operable to carry optical traffic in a plurality of wavelengths between a plurality of nodes. The optical network includes a light-trail, a convener node, one or more intervening nodes, and an end node. The light-trail is established in the optical network between the convener node and...

20060210270 - Addressing method of quanta network and quanta network router: An addressing method of quantum network and a quantum network router are disclosed. There are at least three nodes in the network. The method comprises steps of: appointing an address serial number for every node; sending photon signals with different wavelength from one node to other nodes, wherein the signal...

20060210269 - Method and apparatus for generation and transmission of high energy optical pulses for long range measurements: A method and apparatus for generating and transmitting high energy optical pulses are described. Distributed temperature sensors usually use Raman scattering in optical fibres as the means to determine the temperature. Here, light from a laser source is sent down a fibre and the small amount of light that is...

20060210271 - Station-side apparatus in optical communication: A multiplexing/demultiplexing unit demultiplexes an input light according to a wavelength, and multiplexes a plurality of wavelength components from a plurality of semiconductor optical amplifiers into a multiplexed light. A control unit performs a gain control for each of the semiconductor optical amplifiers. A receiving unit receives an optical signal...

20060210272 - Optical transmission apparatus and optical transmission control method for wavelength-division-multiplexed optical signal: An optical transmission apparatus for amplifying and relaying a wavelength-division-multiplexed optical signal includes (1) a variation-detecting unit which detects varying speed of input power of the wavelength-division-multiplexed optical signal and compares the varying speed with a set value, (2) an optical amplifying unit which amplifies the wavelength-division-multiplexed optical signal at...

20060210274 - Apparatus for and method of mac based transmission in wdm optical ring networks: An apparatus for and a method of direct MAC-to-MAC transmission over an optical ring network employing WDM or DWDM. In a first embodiment, the connections to the transmit and receive portions of two MAC devices in the node are crossed such that the transmitter and receiver of a MAC are...

20060210273 - System and method for implementing optical light-trails: An optical network is disclosed that carries optical traffic in multiplexed wavelengths between a number of nodes. The network includes at least one light-trail associated with one of the wavelengths and established between a convener node and an end node, and including one or more intervening nodes. The network also...

20060210275 - High-order bragg fiber dispersion correction: The present invention generally concerns the use of Bragg optical fibers in chirped pulse amplification systems for the production of high-pulse-energy ultrashort optical pulses. A gas-core Bragg optical fiber waveguide can be advantageously used in such systems to stretch the duration of pulses so that they can be amplified, and/or...

20060210276 - Optical band scanning monitor system and method: A scanning optical monitoring system and method are appropriate for high speed scanning of a WDM signal band. The system and method are able to identify dropped channels or, more generally, discrepancies between the determined or detected channel inventory and a perpetual inventory for the WDM signal, which perpetual inventory...

20060210277 - Method and arrangement for the wireless control of a device, in particular in the field of medicine: Method and arrangement for the wireless control of a device, in particular in the field of medicine. The present invention is directed to a solution for the operation of devices to be controlled, wherein signals required for controlling and monitoring are transmitted wirelessly. In the arrangement for the wireless control...

20060210278 - Remote operation of local or distant infrared-controllable and non-infrared-controllable devices: Tokenized commands originating in an infrared (IR) remote control are sent over a home automation network using low-cost radio-frequency (RF) and/or powerline (PL) communications to enables operation of distant IR-controllable devices not within view of the IR beam from the remote control, as well as operation of other devices that...

20060210279 - Optical antenna assembly: An optical antenna assembly including multiple optical antenna elements, each of the optical antenna elements are arranged in a regular pattern and carried by a supporting body. The regular pattern of the plurality of optical antenna elements is nonuniform. Certain ones of the optical antenna elements are configured to respond...

20060210280 - Optical transceiver: The present invention provides an optical transceiver that enables to reduce the crosstalk from the optical transmitter to the optical receiver. The regenerator of the optical transceiver includes two main amplifiers, a selector, a selector control, and a re-shaper for shaping the receiving signal selected by the selector. The first...

20060210281 - Cosite interference rejection system using an optical approach: A cosite interference rejection system allows cancellation of large interfering signals with an optical cancellation subsystem. The rejection system includes an interference subsystem coupled to a transmit system, where the interference subsystem weights a sampled transmit signal based on a feedback signal such that the weighted signal is out of...

20060210282 - Directly modulated laser optical transmission system with phase modulation: An optical transmitter for generating a modulated optical signal for transmission over a fiber optic link to a remote receiver including a laser; a modulator for directly amplitude modulating the laser with an analog RF signal to produce an optical signal including an amplitude modulated information-containing component; and a phase...

20060210283 - Transmitters for inversely dispersed optical signals: Transmitters for generating inversely dispersed optical signals to counter chromatic dispersion in optical fibers carrying the optical signals are presented. The transmitters have optical pulse generators which generate in parallel inversely dispersed optical pulses which are combined for output into an optical fiber. Different designs with simple modulators can be...

20060204244 - Optical system: A system and method for controlling the gain of an optical amplifier receiving one or more optical input signal channels at a first end include a source for generating a gain control signal, which is input to the optical amplifier at the opposite end to the input signal channels. The...

20060204245 - Pre-emphasis adjustment method: A pulse train having a specific amplitude is transmitted from a transmitting circuit, and the amplitude at the receiving end is measured by a comparator. A coarse adjustment control unit determines a coarse adjustment value of the pre-emphasis intensity based on the measured amplitude. The pre-emphasis intensity is changed within...

20060204246 - Method and apparatus for determining characteristic deterioration in device: In a method and an apparatus for determining characteristic deterioration in an individual device, an initial status value of the device is stored, preferably per temperature, a present status value of the device in operation is stored preferably corresponding to the temperature, the initial status value and the present status...

20060204247 - System and method for multiple bit optical data transmission in memory systems: The disclosed system and method data increases data transmission speed through a memory system by using optical signals comprising a plurality of wavelengths of light so that each pulse of optical signals can represent more than a single bit of data. An optical transmitter comprises multiple, separately controllable light-emitting sections...

20060204248 - Optical regenerative amplifier for binary phase shift-keying signals: There is provided an optical regenerative amplifier for regenerative amplification of a binary phase shift-keying (BPSK) sequence of optical signals having a predetermined time slot between any adjacent signals. The optical regenerative amplifier comprises a first delay interferometer, wherein an input sequence of BPSK signals is split between two arms...

20060198634 - Passive optical network loss test apparatus and method of use thereof: An apparatus and methods for testing a passive optical network with regard to fiber connectivity and attenuation losses, and with regard to the proper operation of packet-based communication protocols thereon....

20060198635 - Optical network terminal with illegal transmission detection circuitry: An optical network terminal, which includes an optical transmitter, monitors the status of the optical transmitter, such as the output or the power consumption of the optical transmitter, to determine when the optical transmitter is illegally transmitting. When an illegal transmission is detected, the optical network terminal removes power from...

20060198636 - Wavelength grid for dwdm: In order to allow transmission of higher bitrate optical wavelength channels (C1-C4) over a transport network designed for the transmission of lower bitrate optical wavelength channels (A1-A8), the wavelengths of the higher bitrate wavelength channels (C1-C4) are detuned by at least 30% of the channel spacing (S2) the lower bitrate...

20060198637 - Non-directional infrared remote-control transmitter for infrared remote control system: A non-directional infrared remote-control transmitter for infrared remote control system is disclosed to include a remote-control function setting module for setting remote-control control status, a controller for receiving signal from the remote-control function setting module, and a driver circuit, which has multiple infrared transmitting devices disposed at different directions and...

20060198638 - Repeating radio frequency transmission system for extending the effective operational range of an infrared remote control system: Inventive systems and methods for remotely controlling infrared controlled devices by using addressed radio frequency control signals. Radio frequency signals propagate through most obstructions to infrared control signals. Augmenting each control signal with an address allows for great selectivity in an environment with several transmitters and receivers....

20060198639 - High speed sfp transceiver: This disclosure concerns optoelectronic transceivers. In one example, a transceiver is implemented as an uncompensated architecture that is substantially compliant with the SFP MSA and is capable of effective operation at a data rate of about 8.5 Gb/s. The transceiver includes a TOSA, ROSA, a printed circuit board, an LDPA...

20060198640 - Method and apparatus for pmd mitigation in optical communication systems: An optical communication system is provided comprising a transmission link including one or more quasi-static waveguide sections coupled by one or more non-static coupling sections. A transmitter is coupled to the transmission link and is adapted to transmit optical signals through the transmission link with wavelength channel spacing of the...

20060198634 - Passive optical network loss test apparatus and method of use thereof: An apparatus and methods for testing a passive optical network with regard to fiber connectivity and attenuation losses, and with regard to the proper operation of packet-based communication protocols thereon....

20060198635 - Optical network terminal with illegal transmission detection circuitry: An optical network terminal, which includes an optical transmitter, monitors the status of the optical transmitter, such as the output or the power consumption of the optical transmitter, to determine when the optical transmitter is illegally transmitting. When an illegal transmission is detected, the optical network terminal removes power from...

20060198636 - Wavelength grid for dwdm: In order to allow transmission of higher bitrate optical wavelength channels (C1-C4) over a transport network designed for the transmission of lower bitrate optical wavelength channels (A1-A8), the wavelengths of the higher bitrate wavelength channels (C1-C4) are detuned by at least 30% of the channel spacing (S2) the lower bitrate...

20060198637 - Non-directional infrared remote-control transmitter for infrared remote control system: A non-directional infrared remote-control transmitter for infrared remote control system is disclosed to include a remote-control function setting module for setting remote-control control status, a controller for receiving signal from the remote-control function setting module, and a driver circuit, which has multiple infrared transmitting devices disposed at different directions and...

20060198638 - Repeating radio frequency transmission system for extending the effective operational range of an infrared remote control system: Inventive systems and methods for remotely controlling infrared controlled devices by using addressed radio frequency control signals. Radio frequency signals propagate through most obstructions to infrared control signals. Augmenting each control signal with an address allows for great selectivity in an environment with several transmitters and receivers....

20060198639 - High speed sfp transceiver: This disclosure concerns optoelectronic transceivers. In one example, a transceiver is implemented as an uncompensated architecture that is substantially compliant with the SFP MSA and is capable of effective operation at a data rate of about 8.5 Gb/s. The transceiver includes a TOSA, ROSA, a printed circuit board, an LDPA...

20060198640 - Method and apparatus for pmd mitigation in optical communication systems: An optical communication system is provided comprising a transmission link including one or more quasi-static waveguide sections coupled by one or more non-static coupling sections. A transmitter is coupled to the transmission link and is adapted to transmit optical signals through the transmission link with wavelength channel spacing of the...