Single Pole Multiple Throw (relay Switch) Patents (Class 385/22)
  • Patent number: 11747569
    Abstract: Systems, devices, and methods may use input/output (I/O) apparatus and an optical switching medium to switch, or route, optical data signals. The optical switching medium may include a plurality of optical switching regions. The I/O apparatus may transmit optical data signals to and receive optical data signals from the optical switching medium to provide switching functionality.
    Type: Grant
    Filed: October 18, 2021
    Date of Patent: September 5, 2023
    Assignee: Seagate Technology LLC
    Inventors: Zoran Jandric, Kevin A. Gomez, Dan Mohr, Anil J. Reddy, Aditya Jain, Krishnan Subramanian
  • Patent number: 11435527
    Abstract: An optical fiber cleaving device (1) has a knife (3) and two clamping arrangements (6a, 7). A first clamping arrangement (6a) includes an element (8a) configured to receive a light-radiation-curing adhesive (11) together with an end portion (5a) of the fiber (5), which is embedded in the adhesive (11). A lamp (15) is configured to apply light on the adhesive (11) to cure it so that the end portion (5a) of the fiber (5) is firmly bound to the element (8a). The end portion (5a) is in this way fixedly held during cleaving of the fiber (5). A method is also provided for cleaving an optical fiber (5), in which the fiber (5) to be cleaved is clamped using light-radiation-curing adhesive (11), as well as use of a fiber cleaving device (1).
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: September 6, 2022
    Assignee: Nyfors Teknologi AB
    Inventor: Uwe Böttcher
  • Patent number: 11190859
    Abstract: Data center interconnections, which encompass WSCs as well as traditional data centers, have become both a bottleneck and a cost/power issue for cloud computing providers, cloud service providers and the users of the cloud generally. Fiber optic technologies already play critical roles in data center operations and will increasingly in the future. The goal is to move data as fast as possible with the lowest latency with the lowest cost and the smallest space consumption on the server blade and throughout the network.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: November 30, 2021
    Assignee: Aeponyx Inc.
    Inventors: Francois Menard, Martin Berard, Jonathan Briere
  • Patent number: 11145606
    Abstract: Structures for an optical fiber groove and methods of forming a structure for an optical fiber groove. A photonics chip includes a substrate and an interconnect structure over the substrate. The photonics chip has a first exterior corner, a second exterior corner, and a side edge extending from the first exterior corner to the second exterior corner. The substrate includes a groove positioned along the side edge between the first exterior corner and the second exterior corner. The groove is arranged to intersect the side edge at a groove corner, and the interconnect structure includes metal structures adjacent to the first groove corner. The metal structures extend diagonally in the interconnect structure relative to the side edge of the photonics chip.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: October 12, 2021
    Assignee: GLOBALFOUNDRIES U.S. INC.
    Inventors: Nicholas A. Polomoff, Jae Kyu Cho, Mohamed A. Rabie, Andreas D. Stricker
  • Patent number: 10998969
    Abstract: Systems and methods are described for providing high throughput connectivity between multiple network nodes, such as satellites in Earth orbit or ground stations, using a multi-access free space optical communications transceiver. The transceiver includes a focal plane assembly with an array of moveable optical fibers or fiber bundles, multi-core fibers, or a combination thereof. Each optical fiber bundle may include a centrally-located data fiber with guide fibers disposed around the data fiber. A controller may align a tip of the data fiber with a focal spot associated with incoming optical signals based on measured power levels of optical signals received in the guide fibers. The data fiber may be a multi-mode fiber (MMF) and circuitry in the transceiver may couple signals from the MMF into separate single-mode fibers (SMF) and then coherently combine signals from the SMFs.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: May 4, 2021
    Assignee: Skyloom Global Corp.
    Inventors: Santiago Tempone, Marcos D. Franceschini
  • Patent number: 10962716
    Abstract: Wavelength division multiplexing (WDM) has enabled telecommunication service providers to fully exploit the transmission capacity of optical fibers. State of the art systems in long-haul networks now have aggregated capacities of terabits per second. Moreover, by providing multiple independent multi-gigabit channels, WDM technologies offer service providers with a straight forward way to build networks and expand networks to support multiple clients with different requirements. In order to reduce costs, enhance network flexibility, reduce spares, and provide re-configurability many service providers have migrated away from fixed wavelength transmitters, receivers, and transceivers, to wavelength tunable transmitters, receivers, and transceivers as well as wavelength dependent add-drop multiplexer, space switches etc.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: March 30, 2021
    Assignee: Valorase, Societe en Cosnitandlte
    Inventors: Pierre Pottier, Muthukumaran Packirisamy
  • Patent number: 10890649
    Abstract: Disclosed herein are techniques for measuring a reference beam and a corresponding returned beam from a target in a measurement system using a single sensor array. The system is configured such that the location of the reference beam is space apart from the location of the returned beam on the sensor array. A first set of sensor elements on the sensor array corresponding to the reference beam is dynamically activated based on a laser beam scanning control signal. The detection signal from the first set of sensor elements is used to determine a location and/or a pattern of the reference beam, which are then used to estimate a location and/or a pattern of the corresponding returned beam on the same sensor array and dynamically select and activate a second set of sensor elements on the sensor array based on the estimated location and/or pattern of the corresponding returned beam.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: January 12, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Tadeusz Jarosinski, Volodimir Slobodyanyuk, John Wyrwas, Manav Raina, Elbert McLaren
  • Patent number: 10782473
    Abstract: A method of forming an optical fibre assembly, comprises providing a planar substrate made of a first material; positioning an optical fibre with an outer layer of a first glass material on a surface of the substrate to form a pre-assembly; depositing a further glass material such as silica soot onto the pre-assembly, over at least a part of the optical fibre and adjacent parts of the substrate surface; and heating the pre-assembly to consolidate the further glass material into an amorphous volume in contact with at least parts of the surface of the substrate and the outer layer of the optical fibre, thereby bonding the optical fibre to the substrate to create the optical fibre assembly.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: September 22, 2020
    Assignee: University of Southampton
    Inventors: Christopher Holmes, Peter George Robin Smith, James Christopher Gates, Lewis Glynn Carpenter
  • Patent number: 10758112
    Abstract: A scanning endoscope including an optical fiber scanner that vibrates a distal end of the optical fiber that guides illumination light and emits the illumination light from the distal end thereof, a controller that conducts control for vibrating the optical fiber at a certain driving frequency set according to a resonance frequency of the optical fiber and for controlling amplitude of the vibration so as to be changed at a certain modulation frequency, and a movement detector that detects the resonance frequency of the optical fiber, wherein the controller changes the driving frequency and the modulation frequency at the same rate as the rate of change of the resonance frequency when the resonance frequency of the optical fiber detected by the movement detector changes.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: September 1, 2020
    Assignee: OLYMPUS CORPORATION
    Inventor: Ken Fujinuma
  • Patent number: 10732375
    Abstract: A fiber optic crossover cable includes a first cable portion, a second cable portion, a crossover distribution unit, and fiber optic subunits. The first cable portion includes an M number of first cable units. Each of the M number of first cable units includes an N number of the fiber optic subunits. The second cable portion includes an N number of second cable units. Each of the N number of second cable units includes an M number of the fiber optic subunits. The M number of first cable units and the N number of second cable units are arranged in the crossover distribution unit. The N number of fiber optic subunits respectively extend to the N number of second cable units. The M number of fiber optic subunits respectively extend to the M number of first cable units.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: August 4, 2020
    Assignee: Fujin Precision Industrial (Jincheng) Co., Ltd.
    Inventors: Ri-Feng Zhang, Zhi-Ming Li, Yao Li
  • Patent number: 10564358
    Abstract: Wavelength division multiplexing (WDM) has enabled telecommunication service providers to fully exploit the transmission capacity of optical fibers. State of the art systems in long-haul networks now have aggregated capacities of terabits per second. Moreover, by providing multiple independent multi-gigabit channels, WDM technologies offer service providers with a straight forward way to build networks and expand networks to support multiple clients with different requirements. In order to reduce costs, enhance network flexibility, reduce spares, and provide re-configurability many service providers have migrated away from fixed wavelength transmitters, receivers, and transceivers, to wavelength tunable transmitters, receivers, and transceivers as well as wavelength dependent add-drop multiplexer, space switches etc.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: February 18, 2020
    Assignee: Valorbec Societe en Commandite
    Inventors: Pierre Pottier, Muthukumaran Packirisamy
  • Patent number: 10498460
    Abstract: Described are various configurations for an amplifying optical demultiplexer. Various embodiments can receive an input signal comprising multiple sub-signals, and separate and amplify the signals within the demultiplexer. Some embodiments include a multistage demultiplexer with amplifiers located between a first and second stage. Some embodiments include a multistage demultiplexer with amplifiers located between a second and third stage.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: December 3, 2019
    Assignee: Juniper Networks, Inc.
    Inventors: Naser Dalvand, Erik Johan Norberg, Brian Robert Koch
  • Patent number: 10481336
    Abstract: Hybrid optical integration places very strict manufacturing tolerances and performance requirements upon the multiple elements to exploit passive alignment techniques as well as having additional processing requirements. Alternatively, active alignment and soldering/fixing where feasible is also complex and time consuming with 3, 4, or 6-axis control of each element. However, microelectromechanical (MEMS) systems can sense, control, and activate mechanical processes on the micro scale. Beneficially, therefore the inventors combine silicon MEMS based micro-actuators with silicon CMOS control and drive circuits in order to provide alignment of elements within a silicon optical circuit either with respect to each other or with other optical elements hybridly integrated such as compound semiconductor elements. Such inventive MEMS based circuits may be either maintained as active during deployment or powered off once the alignment has been “locked” through an attachment/retention/latching process.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: November 19, 2019
    Assignees: Aeponyx Inc., Universite Du Quebec a Montreal
    Inventors: Francois Menard, Fréderic Nabki, Michaël Ménard, Martin Bérard
  • Patent number: 10424564
    Abstract: In an apparatus in which an electrical interconnection interconnects stacked active and passive layers, switches, including at least first, second, third, and fourth switches, on the active layer define a switching network that, when connected to a fly capacitor on the passive layer, define a circuit having a first node connected to the first and second switches and to a first terminal of the fly capacitor, a second node connected to the second switch and third switches, and a third node connected to the third switch and fourth switches and to a second terminal of the fly capacitor.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: September 24, 2019
    Assignee: pSemi Corporation
    Inventor: David Giuliano
  • Patent number: 10302859
    Abstract: Techniques are provided for single edge coupling of chips with integrated waveguides. For example, a package structure includes a first chip with a first critical edge, and a second chip with a second critical edge. The first and second chips include integrated waveguides with end portions that terminate on the first and second critical edges. The second chip includes a signal reflection structure that is configured to reflect an optical signal propagating in one or more of the integrated waveguides of the second chip. The first and second chips are edge-coupled at the first and second critical edges such that the end portions of the integrated waveguides of the first and second chips are aligned to each other, and wherein all signal input/output between the first and second chips occurs at the single edge-coupled interface.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: May 28, 2019
    Assignee: International Business Machines Corporation
    Inventors: Yves Martin, Jason S. Orcutt, Tymon Barwicz, William Green
  • Patent number: 10180538
    Abstract: Good optical properties can be achieved in an optical waveguide made of polycrystalline silicon. A semiconductor layer that constitutes each of a first optical signal line, a second optical signal line, a grating coupler, an optical modulator, and a p-type layer of a germanium optical receiver is formed by a polycrystalline silicon film. Crystal grains of polycrystalline silicon exposed on an upper surface of the semiconductor layer include crystal grains having flat surfaces parallel to a first main surface of a semiconductor substrate, and crystal grains of polycrystalline silicon exposed on side surfaces (including side surfaces of a protrusion of a protruding portion) of the semiconductor layer include crystal grains having flat surfaces perpendicular to the first main surface of the semiconductor substrate.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: January 15, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventor: Tatsuya Usami
  • Patent number: 10151940
    Abstract: Described herein are methods, systems, and apparatuses to utilize an electro-optic modulator including one or more heating elements. The modulator can utilize one or more heating elements to control an absorption or phase shift of the modulated optical signal. At least the active region of the modulator and the one or more heating elements of the modulator are included in a thermal isolation region comprising a low thermal conductivity to thermally isolate the active region and the one or more heating elements from a substrate of the PIC.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: December 11, 2018
    Assignee: Aurrion, Inc.
    Inventors: Robert Silvio Guzzon, Erik Norberg, Jonathan Edgar Roth
  • Patent number: 9894329
    Abstract: Image projection devices, high-speed fiber scanned displays and related methods for projecting an image onto a surface and interfacing with the projected image are provided. A method for projecting one or more images and obtaining feedback with an optical input-output assembly is provided. The input-output assembly comprising a light-scanning optical fiber and a sensor. The method includes generating a sequence of light in response to one or more image representations and a scan pattern of the optical fiber, articulating the optical fiber in the scan pattern, projecting the sequence of light from the articulated optical fiber, and generating a feedback signal with the sensor in response to reflections of the sequence of light.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: February 13, 2018
    Assignee: University of Washington
    Inventors: Charles D. Melville, Richard S. Johnston, Cameron M. Lee, Eric J. Seibel, Brian T. Schowengerdt
  • Patent number: 9877796
    Abstract: A fiber twist reduction system for optical shape sensing enabled instruments includes a rotatable launch fixture (12) configured to hold an optical fiber (28). An optical shape sensing enabled device (26) includes the optical fiber disposed therein. A rotation mechanism (14) is configured to rotate the fiber in response to a twist of the fiber to reduce accumulated twist along its length.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: January 30, 2018
    Assignee: Koninklijke Philips N.V.
    Inventors: David Paul Noonan, Bharat Ramachandran, Raymond Chan, Molly Lara Flexman
  • Patent number: 9696487
    Abstract: A method and system are described for reducing a thermo-optic effect in silicon photonics. In described embodiments, the system comprises a silicon photonic device with a silicon core that includes a cladding layer comprising titanium adjacent to the silicon core. In described embodiments, the method comprises providing a silicon core and depositing a cladding layer adjacent to the silicon photonic core, wherein the cladding layer comprises titanium.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: July 4, 2017
    Assignee: The Regents of the University of California
    Inventor: Sung-Joo Ben Yoo
  • Patent number: 9632254
    Abstract: An optical fiber positioner having an elongated base with sidewalls and a longitudinally extending throughbore. A flexible optical fiber extends through the throughbore and has one end protruding outwardly from an end surface of the base. A plurality of actuators are secured to the sidewalls of the base so that an end of each actuator is positioned adjacent the end of the base. A crossbeam is then connected to the ends of each actuator so that the crossbeam moves laterally relative to the base in unison with the deflection of the actuators. The crossbeam has an opening through which the optical fiber extends so that the optical fiber deflects in unison with the lateral movement of the crossbeam. Various fixtures for assembly of the optical fiber positioner are also shown.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: April 25, 2017
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Leonid A. Beresnev
  • Patent number: 9594216
    Abstract: Various designs of optical switch are disclosed. In one embodiment, the optical switch uses wedges to hold up a collimator and secure the wedges and collimator to a substrate with a type of adhesive, thus avoiding high temperature in soldering process. There are at least two assemblies bonded to the substrate using the adhesive. Each of the assemblies includes a collimator and two wedges, where the wedges are provided to physically hold up the collimator in position. The assemblies are glued directly to the substrate after an optical alignment is performed.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: March 14, 2017
    Assignee: Alliance Fiber Optic Products, Inc.
    Inventors: Xinzhong Wang, Yao Li
  • Patent number: 9575389
    Abstract: A first electro-optic crystal substrate and a second electro-optic crystal substrate are provided as an electro-optic crystal substrate. The first electro-optic crystal substrate comprises a first periodic polarization reversal structure in which first polarization pairs, in each of which the directions of polarization in response to electric fields are opposite to each other, are arranged in a first period along a first arrangement direction which is orthogonal or inclined with respect to the direction of propagation, and light passes through the first periodic polarization reversal structure.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: February 21, 2017
    Assignees: Screen Holdings Co., Ltd., Osaka University
    Inventors: Masahide Okazaki, Toshiaki Suhara
  • Patent number: 9492890
    Abstract: There is proposed a laser machining device (10) for a laser workpiece machining operation, having a laser (14) for producing laser radiation (50), and having at least two laser tools (18, 18?), to which the laser radiation (50) can be supplied by means of an optical-fiber cable (16). According to the invention, the optical-fiber cable (16) has an input-side end (20) having at least two optical fiber cores (22, 22?) and a plurality of output-side ends (26, 26?) each having one of the optical fiber cores (22, 22?), the optical fiber cores (22, 22?) each being connected to one of the laser tools (18, 18?). A switching device (28) is preferably provided for selectively coupling the laser radiation (50) in one or more of the optical fiber cores (22, 22?) of the optical-fiber cable (16).
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: November 15, 2016
    Assignee: TRUMPF Laser-und Systemtechnik GmbH
    Inventors: Rudiger Brockmann, Martin Huonker
  • Patent number: 9445063
    Abstract: A fiber scanning projector includes a light source comprising a plurality of monochromatic light sources, a modulator providing a modulation signal according to image information to the light source, a scanner scanning a screen with a light emitted from the light source and controlled according to the modulation signal, the scanner including a fiber bundle and an actuator which 2-axis-drives the fiber bundle, and a synchronization controller synchronizing driving of the actuator and driving of the modulator.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: September 13, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Woon-bae Kim
  • Patent number: 9329382
    Abstract: According to one embodiment, a display element includes a light guide and a light extraction unit. The light guide extends in one direction, and is optically transmissive. The light extraction unit includes a displacement layer, a reflective layer provided on the displacement layer, and a light extraction layer provided on the reflective layer to oppose the light guide. A plurality of prisms are formed in one major surface of the light extraction layer opposing the reflective layer. A trough line is formed between mutually-adjacent ridgelines. The element has at least one selected from a configuration in which an angle between one of the oblique surfaces and one other major surface of the light extraction layer opposing the light guide is different between corresponding oblique surfaces of two mutually-adjacent prisms and a configuration in which the ridgelines of the prisms are non-parallel to the trough line between the ridgelines.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: May 3, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tsuyoshi Hioki, Yutaka Nakai
  • Patent number: 9201197
    Abstract: A multi-channel, multi-port optical tap coupler with an alignment base element, a pair of sub-assemblies located at opposite ends of the alignment base element, focusing elements located next to each sub-assembly, and an optical filter adjacent to, and in-between the focusing elements is described. The first sub-assembly has an array of waveguides with each waveguide having a radial offset and an azimuthal position with respect to a center axis of the array. The first array includes transmission waveguides and receiving waveguides and each receiving waveguide has a corresponding transmission wave guide that is separated by an azimuthal angle of 180 degrees. The second sub-assembly has a second array of waveguides including a wave guide having the same radial offset and the same azimuthal position for each of the transmission wave guides of the first array.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: December 1, 2015
    Assignee: Panduit Corp.
    Inventors: Richard J. Pimpinella, Jose M. Castro, Bulent Kose, Brett Lane
  • Patent number: 9188745
    Abstract: A multi-channel, multi-port bi-directional optical tap coupler with an alignment base element, a pair of sub-assemblies located at opposite ends of the alignment base element, focusing elements located next to each sub-assembly, and an optical filter adjacent to, and in-between the focusing elements is described. The first sub-assembly has an array of waveguides with each waveguide having a radial offset and an azimuthal position with respect to a center axis of the array. The first array includes transmission waveguides and receiving waveguides and each receiving waveguide has a corresponding transmission wave guide that is separated by an azimuthal angle of 180 degrees. The second sub-assembly has a second array of waveguides including a wave guide having the same radial offset and the same azimuthal position for each of the transmission wave and receiving guides of the first array.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: November 17, 2015
    Assignee: Panduit Corp.
    Inventors: Richard J. Pimpinella, Jose M. Castro, Bulent Kose, Brett Lane
  • Patent number: 8970946
    Abstract: An optical signal processing apparatus includes an input unit to which signal light is input; a wave coupling unit that couples the signal light from the input unit and pump light having a waveform different from that of the signal light; a first nonlinear optical medium that transmits light coupled by the wave coupling unit, the light being the signal light and the pump light; a dispersion medium that transmits the light that has been transmitted through the first nonlinear optical medium; and a second nonlinear optical medium that transmits the light that has been transmitted through the dispersion medium.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: March 3, 2015
    Assignee: Fujitsu Limited
    Inventor: Shigeki Watanabe
  • Patent number: 8941519
    Abstract: A light intensity subtractor according to one aspect of the present invention includes a light subtraction unit, a feedback circuit, a light input port, a first light output port, and a second light output port. The light subtraction unit receives input light through the light input port, outputs first output light to the first light output port, and outputs second output light to the second light output port. The light subtraction unit generates the first output light by reducing the light intensity of the second output light from the light intensity of the input light in accordance with a control voltage. The feedback circuit is connected to the light subtraction unit through the second light output port, and outputs the control voltage in accordance with the light intensity of the received second output light.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: January 27, 2015
    Assignee: NEC Corporation
    Inventor: Kenji Sato
  • Patent number: 8934742
    Abstract: An optical beam switch includes at least one input optical wave guide, multiple output optical wave guides and an optical switching element for selectively switching a light beam guided in the at least one input optical wave guide to one of the output optical wave guides, in which the switching element is between the at least one input optical waveguide and the multiple output optical waveguides. The optical switching element includes a beam propagation element and an optical focusing system, where the beam propagation element has two mutually opposed end faces and where either the beam propagation element or the optical focusing system can be deflected and/or twisted transversely to an optical axis. The at least one input optical wave guide is attached to a first end face of the beam propagation element, and the output optical wave guides are attached to a second end face.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: January 13, 2015
    Assignee: TRUMPF Laser GmbH + Co. KG
    Inventors: Andreas Voss, Thomas Rataj
  • Patent number: 8861904
    Abstract: A reconfigurable optofluidic apparatus includes a microfluidic chip including a microfluidic channel further including an inlet for a liquid core waveguide fluid; a channel pathway for the liquid core waveguide fluid; a plurality of non-core waveguide fluid inlets; a switching chamber having a larger cross sectional area than the channel pathway; and an outlet for the liquid core waveguide fluid and non-core waveguide fluid, further including a plurality of non-liquid core waveguides disposed in the switching chamber. Light input to the apparatus propagates in the liquid core/liquid cladding (liquid) waveguide. The path of the liquid waveguide can be steered in a region of the apparatus over one of the non-liquid core waveguides such that the light is end-fire- or evanescently-coupled into the non-liquid core waveguide and output therefrom or between two of the non-liquid core waveguides and not coupled or output. Associated optofluidic switching methods are disclosed.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: October 14, 2014
    Assignee: Cornell University
    Inventors: David Erickson, Aram J. Chung, Erica E. Jung
  • Patent number: 8837875
    Abstract: An optical path switch and an optical router are provided. The optical path switch comprises an input optical path (100), two output optical paths (201, 202), and an optical path switching element (300). The optical path switching element selectively routes the beam from the input optical path to one of the output optical paths. The optical path switching element comprises a semiconductor substrate (301), an inter-layer dielectric layer (307) on the surface of the semiconductor substrate, a cavity (302) disposed in the inter-layer dielectric layer, and an elastic light guiding plate (306) disposed in the cavity. One end of the cavity is connected with the input optical path, and the other end is separated into an upper cavity (304) and a lower cavity (305) by an isolating layer (303).
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: September 16, 2014
    Assignee: Lexvu Opto Microelectronics Technology (Shanghai) Ltd
    Inventor: Jianhong Mao
  • Patent number: 8818154
    Abstract: Frequency standards based on mode-locked fiber lasers, fiber amplifiers and fiber-based ultra-broad bandwidth light sources, and applications of the same.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: August 26, 2014
    Assignee: IMRA America, Inc.
    Inventors: Ingmar Hartl, Martin Fermann
  • Patent number: 8693820
    Abstract: An optical waveguide includes a substrate, an upper clad layer arranged on the substrate; and an optical waveguide structure that is disposed in the upper clad layer so as to be parallel to a surface of the substrate. The optical waveguide structure includes a flat optical waveguide, channel optical waveguides that are each connected with a first edge face of the flat optical waveguide and extend radially therefrom, the channel optical waveguides each respectively have lateral sides parallel to the substrate surface that have a width therebetween which increases as the distance from the first edge face increases, and an input optical waveguide connected with a second edge face that is arranged at an side of the flat optical waveguide opposite to the first edge face.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: April 8, 2014
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Hideaki Okayama
  • Publication number: 20140079353
    Abstract: An apparatus includes a plurality of input optical couplers and a plurality of output optical couplers. The input optical couplers are placed in a pattern to receive light from multiple locations of an end face of an input multimode optical fiber (MMOF). The output optical couplers are placed in a pattern to provide light to multiple locations of an end face of an output MMOF. The apparatus further includes a plurality of single-mode optical paths. Each of the paths is connected to a corresponding one of the input optical couplers and a corresponding one of the output optical couplers.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 20, 2014
    Applicant: Alcatel-Lucent USA Inc.
    Inventors: Nicolas K. Fontaine, David T. Neilson, Roland R. Ryf
  • Patent number: 8538210
    Abstract: Techniques for designing optical devices that can be manufactured in volume are disclosed. In an exemplary an optical assembly, to ensure that all collimators are on one side to facilitate efficient packaging, all collimators are positioned on both sides of a substrate. Thus one or more beam folding components are used to fold a light beam up and down through the collimators on top of the substrate and bottom of the substrate.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: September 17, 2013
    Assignee: Alliance Fiber Optic Products, Inc.
    Inventors: Daoyi Wang, Frank Wu
  • Patent number: 8503056
    Abstract: Methods and apparatuses for controlling a bias point voltage for an external optical modulator are provided. A control loop is used to adjust a bias signal applied to an external modulator by determining unwanted signals at a predetermined frequency received by an optical receiver of the control loop and accounting for these unwanted signals when determining the bias point voltage.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: August 6, 2013
    Assignee: ARRIS Group, Inc.
    Inventors: Marcel F. Schemmann, Venkatesh G. Mutalik
  • Publication number: 20130177272
    Abstract: Through its higher refractive index, a silicon grism can be used to reduce the Described herein are systems and methods for reducing optical aberrations in an optical system to decrease polarization dependent loss. Embodiments are provided particularly to define beam trajectories through an optical switching system which reduce off-axis aberrations. In one embodiment, a silicon grism is provided for reducing the curvature of the focal plane at an LCOS device in a wavelength selective switch (WSS) such that the separated polarization states converge at the LCOS at substantially the same point along the optical axis for all wavelengths. In this embodiment, an axial offset at the LCOS device will not produce large PDL at the coupling fibers. In another embodiment, a coupling lens having an arcuate focusing region is provided to address an offset in the optical beams, such that the separated polarization states couple symmetrically to respective output fibers.
    Type: Application
    Filed: December 16, 2012
    Publication date: July 11, 2013
    Applicant: FINISAR CORPORATION
    Inventor: FINISAR CORPORATION
  • Patent number: 8483526
    Abstract: An innovative micro-size photonic switch is presented. The photonic switch is comprised of: a mirror having a reflecting surface; an input waveguide; and an output tapered waveguide structure. The photonic switch further includes a switching mechanism disposed adjacent to the reflecting surface and operable to change the refractive index along the reflective surface and thereby shift the angle at which the optical signal reflects from the mirror. More specifically, the switching mechanism may operate to change concentration of free carrier distribution along the reflective surface and thereby displace the effective reflecting interface of the mirror. In this way, the optical signal can be directed to one of two or more output ports of the output tapered waveguide structure and finally exited by one output waveguide channel that is connected to the selected port of the output tapered waveguide structure.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: July 9, 2013
    Assignee: University of Ottawa
    Inventors: DeGui Sun, Trevor Hall
  • Patent number: 8478090
    Abstract: A 90-degree optical hybrid interferometer having an optical path length difference to a pair of the optical signal waveguide arm and the local oscillator optical waveguide arm at either the I phase side or the Q phase side at the TE optical signal side and the TM optical signal side respectively thus giving a phase delay to output interference signals of the I phase side and the Q phase side. The 90-degree optical hybrid interferometer has eight output ports arranged in order of Ip, In, Qp, and Qn at both the TE side and the TM side respectively, by setting the output phase difference which is the sum of the phase difference according to the optical path length difference and phase conversion characteristics of each optical coupler at the I phase side and the Q phase side and the phase delay, as +?/2.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: July 2, 2013
    Assignee: NEC Corporation
    Inventor: Shinya Watanabe
  • Publication number: 20130156417
    Abstract: An optical fiber transmission switching device includes a first transmission port; a second transmission port; a terminal-end input port; a terminal-end output port; a first and a second optical module respectively including an electrical input port, an electrical output port, and a bi-directional optical port, wherein the two bi-directional optical ports are coupled to the first and the second transmission port respectively; a first and a second laser driver circuit respectively coupled to the first and the second optical module; a first and a second electrical amplifier respectively coupled to the first and the second optical module; a first switching module coupled to the terminal-end input port and the first and the second laser driver circuit; a second switching module coupled to the first and the second electrical amplifier and the terminal-end output port.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 20, 2013
    Inventors: Hui Tsuo Chou, John Lynn
  • Patent number: 8467641
    Abstract: The present invention provides a device is provided for use with a first through fourth light beams. The device includes a first through fourth waveguides and first through fourth light scattering portions. The first waveguide has a length and a width and is arranged to receive the first light beam, wherein the length is larger than the width. The second waveguide is parallel with the first waveguide and is arranged to receive the second light beam. The third waveguide is disposed perpendicularly to and intersecting with the first waveguide and the second waveguide. The third waveguide is arranged to receive the third light beam. The fourth waveguide is parallel with the third waveguide and is disposed perpendicularly to and intersecting with the first waveguide and the second waveguide. The fourth waveguide is arranged to receive the fourth light beam. The first light scattering portion is disposed at the intersection of the first waveguide and the third waveguide.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: June 18, 2013
    Assignee: The Johns Hopkins University
    Inventors: Jerry A. Krill, Stergios J. Papadakis, Michael C. Gross, Gerald F. Ricciardi, Joe Frank
  • Patent number: 8406583
    Abstract: The present invention provides a fiber optic jack for routing optical signals. In another aspect, the present invention provides a fiber optic connector with accurate alignment that may be used with, among other things, the fiber optic jack.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: March 26, 2013
    Assignee: Winchester Electroincs Corporation
    Inventor: Jerome C. Farnan
  • Patent number: 8401349
    Abstract: An approach is provided for an automated patch panel. A command is received to change a connection state of an optic patch cord. A robotic arm is controlled to change the connection state of the optic patch cord with respect to a particular port of a plurality of ports disposed about a disk-shaped face of a docking panel.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: March 19, 2013
    Assignee: Verizon Patent and Licensing Inc.
    Inventor: David Z. Chen
  • Publication number: 20130022311
    Abstract: An optical switch (16) for alternatively redirecting a source beam (14) includes a director assembly (18) that is selectively moveable between (i) a first switch position (350), (ii) a second switch position (352), and (iii) a dual switch position (354). In the first switch position (350), the source beam (14) passes to a first port (36). In the second switch position (352), the source beam (14) is directed to a second port (38). In the dual switch position (354), the director assembly (18) splits the source beam (14) into a first beam part (314A) that is directed to the first port (36), and a second beam part (314B) that is directed to the second port (38).
    Type: Application
    Filed: January 26, 2012
    Publication date: January 24, 2013
    Applicant: Daylight Solutions, Inc.
    Inventors: Michael Pushkarsky, Bradley Charles Steele, Kyle Jay Laudner, Christopher Edward Hatch
  • Patent number: 8326096
    Abstract: Disclosed herein is a digital electro-optical switch (1) comprising: an electro-optical substrate (3); a Y-shaped optical waveguide (2) formed in the substrate (3) and including an input branch (4) configured to be connected to an input optical waveguide, and two output branches (5) configured to be connected to respective output optical waveguides; and electrically conductive electrodes (6, 7) formed on the substrate (3) and including an inner electrode (7) arranged between the output branches (5), substantially at a branching area of the optical waveguide (2), and two outer electrodes (6) arranged outside the output branches (5), on opposite sides of the inner electrode (7), the outer electrodes (6) being electrically operable to make the electro-optical switch (1) operative between a first switching state wherein transmission of optical energy is enhanced between the input branch (4) and a first one of the output branches (5), and substantially inhibited in a second one of the output branches (5), and a se
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: December 4, 2012
    Assignee: Selex Sistemi Integrati S.p.A.
    Inventors: Luigi Pierno, Massimiliano Dispenza
  • Publication number: 20120251043
    Abstract: An optical device may include a substrate and an optical waveguide carried by the substrate and having a notch therein defining a feed optical waveguide and a longitudinal optical waveguide section on opposite longitudinal sides of the notch. The optical device may also include a transverse optical waveguide section carried by the substrate and transversely aligned with the feed optical waveguide adjacent the notch. The optical device may further include an elastomeric waveguide switch body configured to be moved between a first position within the notch and operative to switch light from the feed optical waveguide to the longitudinal optical waveguide section, and a second position removed from the notch and operative to switch light from the optical waveguide to the transverse optical waveguide section.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 4, 2012
    Applicant: Harris Corporation
    Inventors: Lawrence Wayne Shacklette, Glenroy Weimar, Michael Raymond Weatherspoon
  • Publication number: 20120189247
    Abstract: An approach is provided for an automated patch panel. A command is received to change a connection state of an optic patch cord. A robotic arm is controlled to change the connection state of the optic patch cord with respect to a particular port of a plurality of ports disposed about a disk-shaped face of a docking panel.
    Type: Application
    Filed: March 30, 2012
    Publication date: July 26, 2012
    Applicant: VERIZON PATENT AND LICENSING INC.
    Inventor: David Z. Chen
  • Patent number: 8195016
    Abstract: An optical fiber switch which may include first and second angled optical fibers having respective first and second end faces. Each of the first and second angled optical fibers may include a core having a core index of refraction, and a cladding surrounding the core and having a cladding index of refraction less than the core index of refraction. The optical fiber switch may further include a first index matching elastomeric solid layer having a proximal face coupled to the first end face, and a distal face opposite the proximal face to be repeatably optically coupled to the second end face. The first index matching elastomeric solid layer may have an index of refraction matching at least the index of refraction of the core. The optical fiber switch may also include at least one actuator for relatively moving the first and second angled optical fibers between a coupled position and an uncoupled position.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: June 5, 2012
    Assignee: Harris Corporation
    Inventor: Lawrence Wayne Shacklette