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| Number | Title | Issue Date |
| 7653305 | Optical transport system and device The present disclosure is directed to an optical transport system and device that conserves power, provides for efficient transport of photonic signals and is capable to accommodate a number of different nodes. The system and device are implemented with the major co... | 01/26/2010 |
| 7483630 | Exchanging asynchronous system information using optical transmission A method for sending and receiving asynchronous signals using optical techniques. The present invention implements open-drain circuit signaling utilizing a Finite State Machine and additional logic to reduce power requirements when transmitting asynchronous informat... | 01/27/2009 |
| RE40564 | Cellular communications system with sectorization A method and apparatus for sectorizing coverage of a cellular communications area includes providing a remote unit having microcell antenna units. Each microcell antenna unit is configured to cover a particular sector. The remote unit is connected to a sectorized ba... | 11/04/2008 |
| 7433596 | Bi-directional, full-duplex, one-wire communications link for use in fiber optic transceivers An apparatus is provided that is capable of achieving bidirectional, full-duplex communication with an optical transceiver. In some instances, the communication is achieved over a single electrical connection of the transceiver and via the use of a duplexing circuit... | 10/07/2008 |
| 7359637 | Self-healing passive optical network A self-healing passive optical network is disclosed. The network includes a central office and a remote node connected to the central office through a main optical fiber. The remote node transmits one portion of power of the upstream optical signal, which has been i... | 04/15/2008 |
| 7359640 | Optical coupling device and method for bidirectional data communication over a common signal line Optical coupling device operates over a bidirectional data link between at least first and second communicators, each communicating data along a common wire of the data link. The device includes at least first and second optical couplers, each including a photon flu... | 04/15/2008 |
| 7352301 | Method for transmitting a data flow over an optical bus, corresponding system and computer program product A method for transmitting on an optical connection an input data sequence having first and second logic states, includes encoding the input data sequence prior to transmission on the optical connection, where the encoding minimizes the first logic states in the enco... | 04/01/2008 |
| 7350986 | Microcode-driven programmable receive power levels in an optical transceiver An operational optical transceiver comprising a receiver, a sensor, a memory, and a processor. The sensor is configured to measure the received power of an optical signal received by the receiver. The received power is sent to the memory where it is read by the proc... | 04/01/2008 |
| 7343104 | Apparatus and method for receiving a quadrature differential phase shift key modulated optical pulsetrain An optical differential phase shift key (DPSK) receiver, a method of demodulating an optical DPSK modulated signal and an optical processor capable of operating as either a DPSK receiver or DPSK transmitter. In one embodiment, the DPSK receiver includes: (1) an opti... | 03/11/2008 |
| 7330500 | Adjustable electronic duplexer A duplexer for a communication device having a transmission unit, a reception unit and a shared antenna is disclosed. The duplexer comprises a first signal path between the transmission unit and the reception unit, the first signal path comprises a filter unit filte... | 02/12/2008 |
| 7321611 | Method and transceiver for full duplex communication of ultra wideband signals An impulse radio transceiver for full duplex ultrawide-band communications. The transceiver comprises an impulse radio transmitter that transmits impulse radio signal pulses, an impulse radio receiver that receives impulse radio signal pulses. Either or both of the ... | 01/22/2008 |
| 7295750 | Access key enabled update of an optical transceiver Systems and methods for verifying that an optical transceiver has access privileges to received microcode. An example environment may include an optical transceiver that is coupled to a host computing system. The optical transceiver includes a memory that has thereo... | 11/13/2007 |
| 7292747 | Strictly non-blocking switch core having optimized switching architecture based on reciprocity conditions A switch core is set forth that comprises a plurality of duplex switches that are interconnected with a interconnection fabric to implement, for example, strictly non-blocking operation of the switch core for reciprocal traffic. In one embodiment, an N-way reciproca... | 11/06/2007 |
| 7286763 | Optical add/drop multiplexer having a banded channel configuration An optical add/drop multiplexer (OADM) adapted to route optical signals having at least two different bit rates. The OADM has at least two sets of DWDM channels, e.g., with channels in a first set having a first bandwidth value suitable for the transmission of 10-Gb... | 10/23/2007 |
| 7286767 | Optical transceiver over single communication link A method, apparatus, and system for optical communications. An optical transmit signal is generated in response to an electrical transmit signal. The optical transmit signal is coupled into a single communication link for transmission there over. An optical receive ... | 10/23/2007 |
| 7277222 | Apparatus and method for wavelength conversion and clock signal extraction using semiconductor optical amplifiers Provided is an apparatus and method for simultaneous optical wavelength conversion and optical clock signal extraction using semiconductor optical amplifiers (SOAs). The apparatus includes: a wavelength converter receiving a pump beam having input information and a ... | 10/02/2007 |
| 7272307 | Virtual protection channel for fiber optic ring network A single, normally inactive, protection ring, provides protection against a working channel failure in a fiber optic ring network. The protection channel is established and put into operation by a series of steps that are triggered by the detection of signal degrada... | 09/18/2007 |
| 7269355 | Optical space communications device and control method thereof An optical space communications device includes a transmitter circuit which assigns an idle code indicating that the device is transmitting no data so that the idle code differs from an idle code for another device and which, when the transmitter circuit continuousl... | 09/11/2007 |
| 7242775 | Optical pulse calibration for quantum key distribution Methods and systems for generating calibrated optical pulses in a QKD system. The method includes calibrating a variable optical attenuator (VOA) by first passing radiation pulses of a given intensity and pulse width through the VOA for a variety of VOA settings. Th... | 07/10/2007 |
| 7242860 | Optical protection switching using 2 by 2 switching functions A network is protected against interruption of service while one or more faulty switches or optical fiber transmission lines are repaired or replaced, by an interconnecting configuration of small N×N optical input/output switches, where N is 2 or greater than 2. Th... | 07/10/2007 |
| 7224861 | Strictly non-blocking switch core having optimized switching architecture based on reciprocity conditions A switch core is set forth that comprises a plurality of duplex switches that are interconnected with a interconnection fabric to implement, for example, strictly non-blocking operation of the switch core for reciprocal traffic. In one embodiment, an N-way reciproca... | 05/29/2007 |
| 7218953 | Infrared communication adapter An infrared communication adapter which can carry out a data exchange with an external equipment having an infrared communication interface even though a portable telephone does not have an infrared communication function. The adapter includes a portable telephone s... | 05/15/2007 |
| 7212747 | Optical transmission device and optical transmission method for transmitting a burst radio signal A light emitting section outputs an optical signal having an intensity corresponding to a transmission timing signal, the optical signal modulated based on a radio transmission signal. A received photocurrent detection section detects an intensity of an optical sign... | 05/01/2007 |
| 7209760 | Methods and apparatus for mitigating the effects of solar noise and the like on a wireless communication system Techniques for reducing or eliminating effects of noise on a wireless communication system are provided. In one aspect of the invention, the technique comprises monitoring noise attributable to an interference source that may affect one or more components of the wir... | 04/24/2007 |
| 7202996 | Optical amplifier For setting the optical gain of an optical amplifier such as a Raman amplifier that is connected in a wavelength division multiplexing (WDM) system, the gain of the amplifier is made dependent on the states of optical polarizers connected to individual inputs of a W... | 04/10/2007 |
| 7200335 | Optical transceiver An optical transceiver is equipped with at least one coupling lens which condenses reception signal light from an optical medium and condenses transmission signal light to the optical medium, an optical plate which passes the reception signal light and reflects the ... | 04/03/2007 |
| 7200337 | Optoelectronic transceiver having dual access to onboard diagnostics An optoelectronic transceiver includes first and second controller ICs. Each controller IC includes logic, a memory, an interface, and at least one input port. Each memory is configured to store digital diagnostic data and has a unique serial device address to allow... | 04/03/2007 |
| 7187862 | Method of locating faults in optical telecommunication networks A method, a system and a module are proposed for detecting and locating faults in an optical multi channel network composed of network nodes. The method includes assigning different sub-carrier pilot tones to a number of the nodes comprising Network Elements (NE), a... | 03/06/2007 |
| 7184668 | System and method for protecting eye safety during operation of a fiber optic transceiver A single-chip integrated circuit, sometimes called a controller, controls operation of a transceiver having a laser transmitter and a photodiode receiver. The controller includes memory for storing information related to the transceiver, and analog to digital conver... | 02/27/2007 |
| 7174129 | Information transmission system, telecommunications device suitable for such a system and transmission method An information transmission system is formed by a first transmission assembly and second transmission assembly. A telecommunications device is provided to have access to these two assemblies of the time-division type to produce information pulses at times that diffe... | 02/06/2007 |
| 7162160 | System and method for protecting eye safety during operation of a fiber optic transceiver A single-chip integrated circuit, sometimes called a controller, controls operation of a transceiver having a laser transmitter and a photodiode receiver. The controller includes memory for storing information related to the transceiver, and analog to digital conver... | 01/09/2007 |
| 7149029 | Interferometric PPM demodulators based on semiconductor optical amplifiers An optical demodulator for use as a pulse position demodulator. The demodulator has one or more semiconductor optical amplifiers coupled to receive an optical signal to be demodulated at first end thereof and for receiving optical control pulses at a second end ther... | 12/12/2006 |
| 7149430 | Optoelectronic transceiver having dual access to onboard diagnostics The optoelectronic transceiver includes first and second controller ICs. Each controller IC includes logic, a memory, an interface, and at least one input port. Each memory is configured to store digital diagnostic data and has a unique serial device address to allo... | 12/12/2006 |
| 7139483 | Optical communication system An optical communication system is formed by connecting a base station to user stations. Each user station has a transmitting section for upstream communication. The base station has a light source which supplies transmission light used for upstream communication. | 11/21/2006 |
| 7123840 | Infrared signal communication system and method including transmission means having automatic gain control An Improved Infrared Signal Communication System and Method Including Transmission Means Having Automatic Gain Control is disclosed. Also disclosed is system and method that adjusts signal transmission power in response to incident signal power amplitude. The prefer... | 10/17/2006 |
| 7123806 | Intelligent optical network element The invention relates to an intelligent network element for optical networks, comprising: at least one back-plane with a plurality of electrical transmission lines running across the back-plane and a plurality of electrical termina... | 10/17/2006 |
| 7113489 | Metropolitan area network switching system and method of operation thereof Systems and methods for connecting and configuring a communication network are described. A network includes a first router; a tie-line having a plurality of full duplex dedicated router interconnects connected to said first router; a second router connected to said... | 09/26/2006 |
| 7095981 | Low power infrared portable communication system with wireless receiver and methods regarding same A portable communication system provides a universal transmitter that mechanically couples to a communication device having a sound output, e.g., a cellular phone handset, and which transforms the sound output into infrared signals, e.g., pulses, for transmission to... | 08/22/2006 |
| 7088518 | Bidirectional optical device A multiband wavelength multiplexed optical device for bidirectional communication over one light path. The device may use dichroic filters or reflectors, or other mechanisms for wavelength or bandwidth separation or discrimination of sent or received light signals. ... | 08/08/2006 |
| 7088926 | Electro-optical connector module The invention pertains to an electro-optical connector module comprising a connection part, at least one optical transmitter circuit and/or optical receiver circuit and at least one electro-optical converter for respectively converting electrical signals into optica... | 08/08/2006 |
