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| Number | Title | Issue Date |
| 8135284 | Fiber misconnection detecting method and device In a method and device which can quickly detect a fiber misconnection without setting an expected value, a node identifier of source node and an identifier of an interface for inputting/outputting a signal are set in a predetermined first field of a header to be tra... | 03/13/2012 |
| 7809278 | Apparatus and method of providing separate control and data channels between arrays of light emitters and detectors for optical communication and alignment A method of aligning optical data communication channels between system functions comprises: emitting an array of light beams from a corresponding array of data emitters in response to electrical data signals generated from a first system function; emitting light be... | 10/05/2010 |
| 7738793 | Secure optical communication system For conventional cipher communications based on the principles of quantum mechanics, the photon number per signal needs to be controlled below 1 or to a mesoscopic level in order to make quantum-mechanical properties remarkable. This invention is intended to provide... | 06/15/2010 |
| 7646986 | Optical receiving device and optical receiving method The present invention provides an optical receiving device, in which a portion of an optical signal is deflected for optical axis detection only when the optical axis is misaligned to thereby achieve a high S/N ratio of a received signal. A condensing section 100... | 01/12/2010 |
| 7623793 | System and method of configuring fiber optic communication channels between arrays of emitters and detectors A system for configuring fiber optic communication channels between arrays of emitters and detectors comprises: an array of light emitters; an array of light detectors; a bundle of optical fibers disposed between the arrays of light emitters and light detectors for ... | 11/24/2009 |
| 7444083 | Optical fiber transmission system with a plural emitting point transmitter In an optical signal transmission system which can perform high-speed optical transmission not lower than 1 Gbps, VCSEL has light-emission points. A core diameter of an optical fiber GI-POF is set to not lower than 200 μm, and the light-emission points of VCSEL are... | 10/28/2008 |
| 7440702 | Method for transmitting digital image signal, digital image transmitting device, digital image sending device and digital image receiver A multiplexer of a transmission section generates a clock signal by multiplying a reference clock signal of a digital image signal by a predetermined number ‘K’. A parallel digital image signal is converted into a serial digital signal on the basis of the clock ... | 10/21/2008 |
| 7418213 | Transimpedance amplifier with integrated filtering and reduced parasitic capacitance A transimpedance amplifier (TIA) with integrated filtering. A capacitance is integrated into the TIA and connected to the power supply and to an internal ground of the TIA. Noise on the power supply of the transimpedance amplifier is filtered by the capacitor such t... | 08/26/2008 |
| 7391975 | Method of synchronizing servo timing in an optical wireless link A technique for synchronizing the servo control systems between two optical wireless links (OWLs) that are in communication with one another. This synchronization allows the alignment in time of the various tasks to be assigned in a desired time period. The synchron... | 06/24/2008 |
| 7369726 | Optical communication between face-to-face semiconductor chips One embodiment of the present invention provides a system that communicates between a first semiconductor die and a second semiconductor die through optical signaling. During operation, the system converts an electrical signal into an optical signal using an electri... | 05/06/2008 |
| 7356261 | Optical wireless communications system An optical wireless communications system has a first optical wireless communications apparatus for transmitting a pilot beam and a second optical wireless communications apparatus for receiving the pilot beam to have a match for an optical axis of the first optical... | 04/08/2008 |
| 7336903 | Optical wireless transmission apparatus There is disclosed an optical wireless transmission apparatus in which a pilot light emitting section of a receiving/emitting section sends a pilot light in a wavelength region of 930 nm to 960 nm to a target apparatus, and a light receiving device having a light re... | 02/26/2008 |
| 7297934 | Optical system In preferred forms of the invention an array of MEMS mirrors or small mirrors inside an optical system operates closed-loop. These mirrors direct external source light, or internally generated light, onto an object—and detect light reflected from it onto a detecto... | 11/20/2007 |
| 7292788 | Multi-beam laser communications system and method A laser communications system includes a wide-field sensor, configured to detect a first set of laser communications sources within a first field of view, a narrow-field sensor includes a tracking portion and a control portion configured to receive laser communicati... | 11/06/2007 |
| 7277643 | Clock extracting fabric in a communication device A signal communication apparatus of a clock reproduction system in which clock signals are extracted from each of parallel data signals for redigitizing each of the data signals. The apparatus includes a reference clock signal generating circuit which is comprised o... | 10/02/2007 |
| 7274451 | Optical beam translation device and method utilizing a pivoting optical fiber An alignment device and method for delivering a light beam to an optical application, such as an optical trap having a pair of lenses with overlapping focal regions for trapping a particle therein. The alignment device includes a light source for generating a beam o... | 09/25/2007 |
| 7269321 | System and method of configuring fiber optic communication channels between arrays of emitters and detectors A system for configuring fiber optic communication channels between arrays of emitters and detectors comprises: an array of light emitters; an array of light detectors; a bundle of optical fibers disposed between the arrays of light emitters and light detectors for ... | 09/11/2007 |
| 7269312 | Bipolar RF-photonic transversal filter with dynamically reconfigurable passbands An architecture that enables one to realize a FIR transversal filter with apodized, interlaced bipolar tap coefficients (an). The tap coefficients, an, are varied via the control of the optical powers emitted by an array of WDM laser sources. A... | 09/11/2007 |
| 7236709 | Multi-input wavelocker for controlling laser wavelengths of multiple lasers Techniques for coupling output laser beams from multiple lasers into multiple fibers and using a collimating lens and a steering mirror to individually couple the laser beams from the fibers to a laser control system. ... | 06/26/2007 |
| 7221436 | System and method for optimization-based sensor steering and tracking A method of tracking a target includes: (a) receiving energy from the target at a plurality of spatial orientations; (b) processing the received energy; (c) evaluating a penalty function at each of the plurality of spatial orientations; (d) selecting a new spatial o... | 05/22/2007 |
| 7212745 | Optical transmission system In an optical transmission system, a lens converges an optical signal outputted from a light emission element. The optical signal having passed .through the lens enters a multi-mode fiber (MMF). A vertex of the lens and an input plane of the MMF are at a distance. T... | 05/01/2007 |
| 7136592 | Self aligning optical detector An optical detector for receiving an optical signal transmitting via an optical fiber cable, comprises an array of photo-sensors for location in the path of the optical signal. A controller a controller detects which of the photo-sensors receives the optical signal ... | 11/14/2006 |
| 7127180 | System, device, and method for supporting cut-through paths in an optical communication system A system, device, and method for supporting cut-through paths in an optical communication system involves obtaining hop count and quality of service information by an initiating device and using the hop count and quality of service information by the initiating devi... | 10/24/2006 |
| 7113700 | Optical transmission system An optical transmission system includes an optical wavelength branching unit that shifts a wavelength transmission band in the short-wavelength or long-wavelength directions based on a branching filter operation temperature, and performs a branching operation on a w... | 09/26/2006 |
| 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 |
| 7082267 | Shared multi-channel parallel optical interface An optical communication method and system that features concurrently refracting and filtering, employing a holographic transform function, optical energy to impinge upon an optical detector with unwanted characteristics of the optical energy being removed. To that ... | 07/25/2006 |
| 7065299 | Medical device having a combination data reader and infrared data transceiver and method of using same An electronic apparatus comprising: a housing; an infrared filter window supported by the housing; and an infrared transceiver mounted in the housing so that infrared light emitted by the infrared transceiver is focused in the vicinity of the infrared window, and ra... | 06/20/2006 |
| 7062121 | Method and apparatus for a scalable parallel computer based on optical fiber broadcast An information processing system, includes several processors, each having at least one optical fiber input and at least one optical fiber output; a controller having an optical fiber input and at least one fiber output; fibers, bundled for transmitting information;... | 06/13/2006 |
| 7046871 | Optoelectronic transmission module and fabrication method thereof An optoelectronic transmission module. In the optoelectronic transmission module, a light transmissive element has first and second ends and top and bottom surfaces, a circuit board transmits electrical signals and has first and second openings. The circuit board is... | 05/16/2006 |
| 6970652 | Auto-setting and optimization of EAM with optical line systems According to the invention there is provided a method of controlling an optical communication system comprising an optical transmitter, an optical receiver and an optical fiber interconnecting the optical transmitter and the optical receiver, the method comprising d... | 11/29/2005 |
| 6941076 | Tone modulation for out-of-band communication in a free-space optical communication link Systems and methods for the transmission of auxiliary data via a modulated carrier signal superimposed on a primary data communication signal between terminals of a free-space optical communication system are disclosed. The carrier signal is modulated with an auxili... | 09/06/2005 |
| 6847786 | Compact wavelength filter using optical birefringence and reflective elements A wavelength division multiplexing/demultiplexing device is presented utilizing a polarization-based filter to separate odd and even wavelengths, or upper and lower channels of an input optical signal. The wavelength filter first converts the input signal to a prede... | 01/25/2005 |
| 6842239 | Alignment of multi-channel diffractive WDM device A method and apparatus are presented for aligning a diffractive WDM device that includes i) a multi-channel, light handling device having a selected channel spacing and ii) a multi-channel signal input unit. The method includes adjusting a direction of incidence of ... | 01/11/2005 |
| 6839521 | Photonic bipolar modem for secure multi-channel communication A photonic arbitrary waveform modem utilizes a bipolar coding scheme. The bipolar coding scheme includes an arbitrary waveform modem which includes a plurality of tapped delay lines and is implemented by partitioning each optical frequency chip into positive and neg... | 01/04/2005 |
| 6829439 | Optical communication device Free-space optical communication uses multibeam communications, for example between a base station and multiple remote stations. To improve efficiency and reduce complexity, the base station transmitter utilizes a single wide-angle objective lens for all of the opti... | 12/07/2004 |
| 6819874 | Alignment system and method for optical satellite communication An optical communication terminal transmits data via an optical signal with a transmit mirror positioned to direct the optical signal. The optical communication terminal includes a processor configured to develop a control signal for a mirror controller to establish... | 11/16/2004 |
| 6813446 | System for acquiring and maintaining reliable optical wireless links Disclosed is apparatus and method for establishing and maintaining optical data transfer between a first optical communications device (202) and a second optical communications device (204). The devices have a feedback communications link (216) ... | 11/02/2004 |
| 6801722 | Optical tracking system with reflective fiber An optical tracking system for use in an optical receiver of an optical communication system includes a first focus unit, a tracker, and an optical fiber having an angled tip. The first focus unit receives an optical signal to be tracked and focuses it on the angled... | 10/05/2004 |
| 6775480 | Free space optical interconnect system A free space optical interconnect system tolerant to misalignments and utilizing redundant elements of a transmitter and/or a receiver is provided. The elements are arranged into clusters, the number of clusters being redundant, and the number of elements in each cl... | 08/10/2004 |
| 6768876 | Method and apparatus for tracking an optical communications system A tracking system and method in an optical communications system utilizing an optical communications beam. In one embodiment, the disclosed optical communications system includes a communications receiver circuit and a tracking circuit. The optical communications sy... | 07/27/2004 |
