Class / Patent application number | Description | Number of patent applications / Date published |
398156000 | Including alignment between transmitter and receiver | 12 |
20090003836 | Micro-electro-mechanical systems and photonic interconnects employing the same - Various embodiments of the present invention are directed to micro-electro-mechanical systems and photonic interconnects employing micro-electro-mechanical systems. One micro-electro-mechanical system embodiment of the present invention includes a lens structure and an actuator. The lens structure includes a substantially transparent membrane having a flexible, curved surface, and a reservoir holding fluid that is fluidly coupled to the membrane. The actuator system is operably coupled to the reservoir in order to exert pressure on the fluid to change the curvature of the membrane and the focal point of the lens structure. | 01-01-2009 |
20090103930 | Method and system of tracking optical beam shift - An optical interconnect includes an optical transmitter having a plurality of optical sources; a light sensing array configured to receive optical beams emitted from the optical sources; and a beam tracking module in communication with the light sensing array. The beam tracking module is configured to calculate a displacement of at least one of the optical beams by extrapolating an extremum from cross-correlation data obtained between at least a portion of a sample reading from the light sensing array and at least a portion of a plurality of shifted versions of a reference reading from the light sensing array. A related method includes calculating a displacement of an optical beam by extrapolating an extremum from cross-correlation data obtained between a sample reading of the optical beam and at least a portion of a plurality of shifted versions of a reference reading from the light sensing array. | 04-23-2009 |
20090263141 | DUAL USE OF TEST POINT POWER MONITOR - A channel alignment system in an optical communication network includes logic to sample power of a quadrature amplitude modulation (QAM) channel at a component downstream from a QAM modulator. The system determines if the sampled channel power has a sufficient level. The system signals power control logic of the QAM modulator to adjust a gain of the sampled channel. | 10-22-2009 |
20100046960 | IR OPTICS FOR AUDIO TRANSMISSION - A device for vehicles for transmitting optical signals, for example infrared signals, includes an optical radiation source having a specified beam characteristic with a preferred direction. A deflecting structure is provided in the beam path downstream from the radiation source, by use of which the preferred direction of the beam characteristic may be deflected. | 02-25-2010 |
20100239267 | PHOTOFIELD TRANSMITTER AND PHOTOFIELD TRANSMISSION SYSTEM - It is provided an optical field transmitter comprising a light source, a DA converter and an optical field modulator. The optical field transmitter modulates an information signal into an optical field signal. The information signal includes one of multilevel signals arranged irregularly on a complex plane and multilevel signals arranged by combining mutually different numbers of phase values in at least two amplitude values. The optical field transmitter further comprises a phase pre-accumulation circuit for outputting phase pre-accumulation complex information obtained by previously accumulating a phase component of the information signal at predetermined time intervals. The DA converter converts the information signal including the output phase pre-accumulation complex information into an analog signal, and inputs the converted analog signal to the optical field modulator. The optical field modulator modulates output light into the optical field signal by using the analog signal, and transmits the modulated optical field signal. | 09-23-2010 |
20100266290 | LASER COMMUNICATION POSITIONING SYSTEM - A system for receiving an optical communication signal includes a first array of light responsive devices defining a first target area and a second light responsive device defining a second target area. The second target area is smaller than the first target area. A detection device is coupled to the first array of light responsive devices and configured to identify at least one individual light responsive device in the first array of light responsive devices receiving the greatest light input relative to other light responsive devices in the first array of light responsive devices. A positioning device is configured to position the second light responsive device relative to the at least one individual light responsive device, such that the second light responsive device receives the optical communication signal. | 10-21-2010 |
20110026934 | TRANSMISSION OF BROADBAND SIGNALS - The invention is concerned with the transmission of broadband signals onto to a telephony connection having constraint profile limiting the maximum allowed power as a function of frequency. As a result, broadband signals can be delivered using low power equipment to a telephony line whilst respecting the constraint profile associated with that line. | 02-03-2011 |
20110188865 | METHOD FOR RAPID DETERMINATION OF LOWEST COST WAVELENGTH ROUTES THROUGH A PHOTONIC NETWORK BASED ON PRE-VALIDATED PATHS - A method of setting up an end-to end connection between two end-points in an optical network. A plurality of validated paths in the network are defined. Each validated path extends between a respective pair of wavelength termination points and has requisite physical resources to carry signal traffic between its pair of wavelength termination points. A graph of the network is generated. An edge of the graph corresponds with a respective validated path, and a vertex of the of the graph corresponds with at least one wavelength termination point. The graph is analysed to compute an end-to-end path between two vertices respectively corresponding with end-points of the end-to-end connection, and the end-to-end connection set up using the computed path. | 08-04-2011 |
20140072312 | DOCK FOR A PORTABLE ELECTRONIC DEVICE - A dock for receiving a portable electronic device. The dock includes a housing comprising an aperture in a recess for receiving and supporting the portable electronic device, and a communication assembly disposed in the housing and moveable relative to the housing. The communication assembly includes a dock optical transceiver disposed in the aperture for aligning with a device optical transceiver when the portable electronic device is disposed in the recess, and magnets coupled to the optical transceiver for aligning with complementary magnets of the portable electronic device to facilitate engagement and disengagement of the portable electronic device with the dock and to facilitate alignment of the dock optical transceiver with the device optical transceiver when the portable electronic device is engaged with the dock. | 03-13-2014 |
20140314426 | OPTICAL CONNECTOR - An optical connector includes a printed circuit board, at least one emitter, at least one receiver, a coupler, and a number of positioning poles. The printed circuit board includes an assembling surface defining a number of first positioning recesses therein. The emitter and the receiver are electrically connected to the assembling surface of the printed circuit board. The coupler includes a bottom surface facing toward to the printed circuit board and at least two first lenses corresponding to the emitter and the receiver. The coupler defining a number of second positioning recesses in the bottom surface corresponding to the first positioning recesses. The positioning poles are positioned between the printed circuit board and the coupler, with one end of each positioning pole inserting and being fixed into a first positioning recess and the other end of each positioning pole inserting and being fixed into a second positioning recess. | 10-23-2014 |
20160134372 | ALIGNMENT IN LINE-OF-SIGHT COMMUNICATION NETWORKS - Various of the disclosed embodiments relate to line-of-sight (LOS), e.g., optical, based networks. Particularly, systems and methods are provided for aligning nodes in a line-of-sight communication network with their peers. The nodes may be placed and passively aligned with one another as position information is passed between peers. The elevation indicated in the position information may be refined based upon relative barometric pressure readings between peers. In a next phase, isolated networks of nodes may be integrated with the network of nodes contacting the Internet backbone. Finally, routing algorithms may be implemented to address weather effects (e.g., fog) and congestion to optimize network service. | 05-12-2016 |
20160134373 | DEPLOYING LINE-OF-SIGHT COMMUNICATION NETWORKS - Various of the disclosed embodiments relate to line-of-sight (LOS), e.g., optical, based networks. Systems and methods for determining where to place and how to configure nodes in an optically connected network across a geographic region are provided. Various factors concerning the region may be collected, including, e.g.,: building locations and height, building types, population densities, backbone connection locations, recurring weather factors, geographic elevation, etc. The algorithm may iteratively place nodes based upon the accessible range of a preceding contemplated node position. | 05-12-2016 |