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| Number | Title | Issue Date |
| 8139944 | Method and apparatus for clearing an optical channel A method and apparatus for clearing an optical channel for transmitting data through free space between a first and second location includes a light beam, wherein the light beam has a spatially and/or time-dependent modulated intensity profile, and is substantially ... | 03/20/2012 |
| 7941050 | Systems and methods for free space optical communication Free space optical communication methods and systems, according to various aspects are described. The methods and systems are characterized by transmission of data through free space with a digitized optical signal acquired using wavelength modulation, and by discri... | 05/10/2011 |
| 7639950 | Communications system A communications system incorporates a transmitter a receiver. The transmitter includes an infrared light emitting diode (LED). The LED output is positive or negative luminescence, i.e. above or below an equilibrium background intensity level respectively, according... | 12/29/2009 |
| 7603038 | System and method that suppresses intensity fluctuations for free space high-speed optical communication A high-speed (Gbps), free space optical communication system is based on spectral encoding of radiation from a wide band light source, such as a laser. By using partially coherent laser beams in combination with a relatively slow photosensor, scintillations can be s... | 10/13/2009 |
| 7486893 | Dynamic optical interconnect system reference signal formation The disclosed technology provides a dynamic interconnection system which allows to couple a pair of optical beams carrying modulation information. In accordance with the disclosed technology, two optical beams emanate from transceivers at two different locations. Ea... | 02/03/2009 |
| 7457545 | Process for controlling a Hartmann wavefront sensor (WFS) in an adaptive optic (AO) system A free-space adaptive optical laser communication system having signal transmission and reception channels at all terminals in the communication system, wherein wavefront sensing (WFS) and wavefront correction mechanisms are employed along signal transmission and re... | 11/25/2008 |
| 7437077 | Wavefront sensing system employing active updating of reference positions and subaperture locations on wavefront sensor A free-space adaptive optical laser communication system having signal transmission and reception channels at all terminals in the communication system, wherein wavefront sensing and wavefront correction mechanisms are employed along signal transmission and receptio... | 10/14/2008 |
| 7406263 | Combined wavefront sensor and data detector for a free space optical communications system with adaptive optics In an adaptive optics module, wavefront sensing and data detection are implemented in a single device. For example, an optical-to-electrical converter converts a data-encoded optical beam to an intermediate electrical signal, which contains both the data encoded in ... | 07/29/2008 |
| 7400834 | Optical space transmission apparatus and optical space communication system An optical space transmission apparatus which performs a first communication, in which a light beam propagating through a space is used, with a remote apparatus includes a communication section and an identification section. Here, the communication section performs ... | 07/15/2008 |
| 7397018 | Amplitude and phase controlled adaptive optics system An adaptive optics system is provided. The system includes a light source, a pair of deformable mirrors and a detection module. The light source is configured to provide an outgoing beam. The outgoing beam has an amplitude and a phase. The first deformable mirror is... | 07/08/2008 |
| 7366472 | Technology for creating a RF radiation-free environment The invention relates to a method of rendering telecommunication devices ineffective, by creating a substantially radio frequency radiation-free environment by providing an interference generating pattern (IGP) adjacent to the environment in a position between the e... | 04/29/2008 |
| 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 |
| 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 |
| 7343098 | Fiber optic phased array and associated method for accommodating atmospheric perturbations with phase and amplitude control A fiber optic phased array and control method are provided for controllably adjusting the phase and amplitude of the optical signals emitted by a plurality of fiber optic amplifiers to compensate for atmospheric turbulence. The fiber optic phased array also includes... | 03/11/2008 |
| 7330661 | Method and apparatus for optical communication between devices A method and apparatus for processing a data signal for transmission to a remote device transmits at least two synchronized copies of the data signal, in optical form, in different directions. To that end, the data signal first is synchronized to a clock signal to p... | 02/12/2008 |
| 7330662 | System and method for remote optical digital networking of computing devices The extended range of optical data communication is enabled through the use of intermediary relay stations spaced fairly far apart. IRDA communicatiOn, as is well known, uses very short duration optical pulses to send data up to 1 Mbit/sec; this has the concomitant ... | 02/12/2008 |
| 7324457 | Method and apparatus for compensating for optical transmission delay in a synchronous mobile communication system using synchronous digital hierarchy A method and apparatus are disclosed for compensating for optical transmission delays in a synchronous mobile communication system. A Base Station Transceiver Subsystem (BTS) includes a Main Unit (MU) for processing a mobile communication signal and a plurality of R... | 01/29/2008 |
| 7319854 | Automatic airplane seat location mapping During a system reconfiguration, a selected column or column of wireless units, such as associated with airplane seats, are powered up. The first unit in the column detects a ground and begins a wireless identification process with an access point which allows the s... | 01/15/2008 |
| 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 |
| 7289736 | Adaptive optics imaging system with object acquisition capability An adaptive optics imaging system has an acquisition imaging subsystem to assist in initial acquisition and alignment of the system to a target object. A wavefront sensor in the adaptive optics imaging system is aligned to a reference object in the acquisition imagi... | 10/30/2007 |
| 7286766 | Free space optical communication system with power level management A free space optical communication system includes an adaptive optical power regulator. The adaptive optical power regulator adapts to changes in effective loss associated with the free space optical path. In one embodiment the adaptive optical power regulator adapt... | 10/23/2007 |
| 7283751 | Adaptive optical system compensating for phase fluctuations A method and apparatus for compensating for phase fluctuations incurred by an optical beam travelling through free space, especially a turbulent atmosphere. A transmitting station transmits a plurality of uniquely tagged optical beams through free space. The plurali... | 10/16/2007 |
| 7277644 | Fade-resistant forward error correction method for free-space optical communications systems Free-space optical (FSO) laser communication systems offer exceptionally wide-bandwidth, secure connections between platforms that cannot other wise be connected via physical means such as optical fiber or cable. However, FSO links are subject to strong channel fadi... | 10/02/2007 |
| 7274876 | Integrated electrical/optical hybrid communication system with revertive hitless switch A system according to embodiments of the invention may include a first communication path that converts an optically-modulated source signal to a radio signal based on a detected degradation in a quality of a received optical signal, and a second communication path ... | 09/25/2007 |
| 7274877 | Optical/radio local access network A communication system includes a plurality of nodes and a plurality of point-to-point links that interconnect the plurality of nodes into a network. Each node includes an optical switch to controllably route a plurality of in-ports of the optical switch into a plur... | 09/25/2007 |
| 7272322 | Modular free space optical (FSO) device and related methods A modular free space optical (FSO) communications device may include an adaptive optics (AO) module and an interchangeable optical relay (OR) module. More particularly, the AO module may include an AO housing and at least one AO device carried thereby. Also, the int... | 09/18/2007 |
| 7266257 | Reducing crosstalk in free-space optical communications An optical transmitter includes a modulator, a dispersion adjustment module, and an optical amplifier. The optical transmitter is configured to transmit optical pulses over a free-space optical communication channel. The modulator is configured to produce an optical... | 09/04/2007 |
| 7257327 | Wireless communication system with high efficiency/high power optical source An optical communication system is provided which includes an optical signal transmitter which communicates high bandwidth, high power frequencies. The optical signal transmitter includes a high efficiency/high power optical source such as an optical magnetron or a ... | 08/14/2007 |
| 7224905 | Remotely-interrogated high data rate free space laser communications link A system and method of remotely extracting information from a communications station by interrogation with a low power beam. Nonlinear phase conjugation of the low power beam results in a high power encoded return beam that automatically tracks the input beam and is... | 05/29/2007 |
| 7221874 | Free space optical (FSO) device providing remote control features and related methods A modular free space optical (FSO) communications device may include an optical relay (OR) module and a base module. More particularly, the OR module may include an OR housing and at least one OR device carried thereby. Further, the base module may include a base ho... | 05/22/2007 |
| 7215888 | System and method of implementing variable loop gain in an optical wireless link based on distance A system and method of varying the control loop gain of an optical wireless communication link between a transmitting station and a receiving station as an inverse function of distance between the transmitting station and the receiving station to allow the optical w... | 05/08/2007 |
| 7209663 | Apparatus and method for repeating signal by using wireless optical transmission A repeating apparatus and method using wireless optical transmission is disclosed. The repeating apparatus includes a donor device for transmitting two identical copies of an optical signal by receiving a RF signal from a base station and electro-optic converting th... | 04/24/2007 |
| 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 |
| 7200334 | System for transmitting digital signals in a space vehicle The invention relates to a system for conveying digital signals inside a space vehicle between a transmitter and a receiver. In the invention, the link between the transmitter and the receiver comprises a first portion made of optical fiber and a second portion in w... | 04/03/2007 |
| 7197248 | Adaptive correction of wave-front phase distortions in a free-space laser communication system and method An adaptive free-space laser communication system and a method of communication between laser communication transceivers of the system. Communication channel condition information communicated via laser beams transmitted between a first laser communication transceiv... | 03/27/2007 |
| 7146084 | Fiber optic light source for display devices A light source includes at least one optical fiber having a length and first and second ends and at least one electromagnetic wave source disposed along at least a portion of the length of the fiber for transmitting electromagnetic waves through a side surface of th... | 12/05/2006 |
| 7133617 | Reflection detection in an optical wireless link In an optical wireless network, where light beams are transmitted over-the-air, reflections of the transmitted light beams may cause a receiver of an optical wireless device to detect and subsequently lock onto the signal that it transmitted. By doing so, the networ... | 11/07/2006 |
| 7113707 | Dynamic optical interconnect This invention provides a dynamic interconnection system which allows to couple a pair of optical beams carrying modulation information. In accordance with this invention, two optical beams emanate from transceivers at two different locations. Each beam may not see ... | 09/26/2006 |
| 7109935 | Combined optical and electromagnetic communication system and method An antenna system for communicating electromagnetic and optical signals using a common aperture is provided. The system includes at least one optical phased array terminal integrated with an optically transparent electromagnetic antenna such that the optically trans... | 09/19/2006 |
| 7110678 | Hybrid wireless optical and radio frequency communication link A hybrid wireless optical and radio frequency (RF) communication link utilizes parallel free-space optical and RF paths for transmitting data and control and status information. The optical link provides the primary path for the data, and the RF link provides a conc... | 09/19/2006 |
