Patents Examined by Michael P. Mooney
  • Patent number: 11009763
    Abstract: An optical transceiver including a submount, a Mach-Zehnder Modulator (MZM), bonding wires, and a low pass filter type matching network is provided. The MZM includes an input port and an output port and disposed on the submount. The bonding wires are coupled to the submount and the MZM. The low pass filter type matching network is coupled to the bonding wires and is configured to absorb inductance of the bonding wires at a high frequency.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: May 18, 2021
    Assignees: OE Solutions Co., Ltd., OE Solutions America, Inc.
    Inventors: Moon Soo Park, Tae Young Jeon
  • Patent number: 11009653
    Abstract: An optical system including first and second optical elements for guiding light therein. For each optical element, the propagating light enters or exits the optical element through a coupling surface of the optical element. The coupling surfaces of the optical elements face, and align with, each other so that light propagating in one of the optical elements exits the optical element through the coupling surface of the optical element and enters the other optical element through the coupling surface of the other optical element. The coupling surfaces are separated from each other and define a region therebetween. The region is filled with a coolant, the coolant substantially surrounding at least one of the first and second optical elements.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: May 18, 2021
    Assignee: 3M Innovative Properties Company
    Inventors: William J. Clatanoff, Daniel J. Treadwell, Phillip E. Tuma, Terry L. Smith, Donald K. Larson, Barry J. Koch
  • Patent number: 11002911
    Abstract: A polarization-independent, optical circulator is formed in silicon photonics. The polarization-independent, optical circulator uses an optical splitter having two couplers and two waveguides joining the two couplers. One of the two waveguides is thinner than the other to create a large effective index difference between TE and TM modes transmitted through the one waveguide. Polarization rotators, including reciprocal and/or non-reciprocal rotators, are further used to create the optical circulator.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: May 11, 2021
    Assignee: Skorpios Technologies, Inc.
    Inventors: Majid Sodagar, Wenyi Wang, Changyi Li, Guoliang Li, Murtaza Askari, Yi Wang
  • Patent number: 11002935
    Abstract: The present disclosure relates to an optical fiber distribution system that can be expanded to selectively add a number of ruggedized fiber optic adapter ports for connecting to customer premises.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: May 11, 2021
    Assignee: CommScope Technologies LLC
    Inventor: Douglas Ferris Dowling
  • Patent number: 10996397
    Abstract: Control systems and methods for aligning multimode optical fibers are provided. A method includes producing a brightness profile for a first and second multimode optical fiber. The method further includes determining a cladding center position and a core center position from the brightness profile of the first multimode optical fiber and from the brightness profile of the second multimode optical fiber. The method further includes calculating a concentricity error for the first multimode optical fiber based on the cladding center position and the core center position from the brightness profile of the first multimode optical fiber and for the second multimode optical fiber based on the cladding center position and the core center position from the brightness profile of the second multimode optical fiber.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: May 4, 2021
    Assignee: AFL Telecommunications LLC
    Inventor: Wenxin Zheng
  • Patent number: 10996403
    Abstract: An optical fiber mounting method that mounts a plurality of optical fibers on a substrate includes: bundling the optical fibers together with a bundling member; adjusting a height of the bundling member from a surface of the substrate or an angle of inclination of the bundling member relative to the surface of the substrate; bringing end faces of the optical fibers bundled with the bundling member into contact with end faces of optical waveguides on the substrate, the optical waveguides respectively corresponding to the optical fibers; and bonding the optical fibers to the substrate, in a state where the end faces of the optical fibers are in contact with the end faces of the optical waveguides.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: May 4, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Takayoshi Matsumura, Naoaki Nakamura
  • Patent number: 10996396
    Abstract: The present invention, disclose an endcap comprising: a. a first part being at least partially symmetrical about a main axis, said first part being fused to an optical fiber at a proximal end thereof such that said main axis is alignable with an optical axis of the optical fiber beam; and, b. a second part connecting to said first part at a distal end of said first part, wherein said second part protrudes from said first part, such that said second part forms a protruding bonding area, which is perpendicular to said main axis, for attaching said endcap to a fixture attachment area of a fixture apparatus, said fixture attachment area is perpendicular to said main axis, wherein said endcap is inserted at least partially inside said fixture apparatus, whereby, said endcap keeps said optical fiber beam aligned and minimizes angular diversion from an original alignment.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: May 4, 2021
    Assignee: ELBIT SYSTEMS ELECTRO-OPTICS - ELOP LTD.
    Inventors: Semion Kizhner, Amir Hertzog, Rina Cohen, Daniel Wormser, Tal Regev
  • Patent number: 10983295
    Abstract: An optical cable comprising an optical core and an external sheath surrounding the optical core, wherein the external sheath comprises an inner layer circumferentially enclosing the optical core and an outer layer circumferentially enclosing the inner layer and comprising at least one longitudinal cavity accessible from outside the external sheath and extending through at least a portion of the outer layer thickness. The inner and outer layers of the external sheath are made of a first material having a first tensile strength, while the cavities in the outer layer are filled with a second material having a second tensile strength lower than the first tensile strength.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: April 20, 2021
    Assignee: PRYSMIAN S.p.A.
    Inventors: Ralph Sutehall, Martin Vincent Davies, Ian Dewi Lang
  • Patent number: 10983282
    Abstract: A direct coupling fiber-device structure including an optical fiber and a micro device is provided. The optical fiber has a first end, a second end opposite to the first end, and an inner cavity recessed from the first end. The micro device is in the inner cavity. The micro device has a first surface and a second surface. The first surface is substantially facing away from the first end. The second surface is opposite to the first surface and facing toward the first end.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: April 20, 2021
    Assignee: MIKRO MESA TECHNOLOGY CO., LTD.
    Inventor: Li-Yi Chen
  • Patent number: 10969544
    Abstract: Structures for a filter and methods of fabricating a structure for a filter. The filter is coupled to a waveguide core. The filter includes a first plurality of grating structures positioned adjacent to a first section of the waveguide core and a second plurality of grating structures positioned adjacent to a second section of the waveguide core. The first plurality of grating structures are configured to cause laser light in a first portion of a wavelength band to be transferred between the first section of the waveguide core and the first plurality of grating structures. The second plurality of grating structures are configured to cause laser light in a second portion of a wavelength band to be transferred between the second section of the waveguide core and the second plurality of grating structures.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: April 6, 2021
    Assignee: GLOBALFOUNDRIES U.S. INC.
    Inventors: Shuren Hu, Bo Peng, David Riggs, Karen Nummy, Kevin K. Dezfulian, Francis Afzal
  • Patent number: 10969543
    Abstract: A semiconductor integrated optical device includes a waveguide mesa having a first multilayer including a first core layer, a second multilayer including a second core layer, and a butt joint interface between the first core layer and the second core layer; a support having first to third regions; and a buried semiconductor region provided on the support. The first multilayer has a first mesa width on the first region. The second multilayer has a second mesa width on the second region. On the third region, the second multilayer has a waveguide portion having a third mesa width smaller than the first and the second mesa widths. The second core layer has a waveguide core thickness on the second region. In the waveguide portion, the second core layer has a core portion having a thickness different from the waveguide core thickness at a position away from the butt-joint interface.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: April 6, 2021
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Takuo Hiratani
  • Patent number: 10951316
    Abstract: Fronthaul monitoring systems and methods include a performing protocol testing, via a protocol layer acquisition module, of a protocol layer signal for analysis thereof to identify issues; performing optical physical layer monitoring via an optical physical layer acquisition module to identify optical physical layer issues; and configuring an optical switch to switch an input port connected to the protocol layer acquisition module and the optical physical layer acquisition module over different links of the plurality of links wherein a test coordinator software module is configured to manage the optical switch to coordinate the optical protocol layer analysis of a link and the optical physical layer testing of the link.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: March 16, 2021
    Assignee: EXFO Inc.
    Inventors: Jean-Sébastien Martel, Stéphane Perron
  • Patent number: 10948655
    Abstract: An optical coupling apparatus includes: a coupling and polarization beamsplitter, a phase shifter, a 2×2 adjustable beamsplitter, a photoelectric detector, and a microprocessor. Light in any polarization direction can be coupled from an optical fiber into a waveguide, an extra insertion loss is small, intrinsic insertion losses for light in different polarization directions are the same, a structure is simple, and miniaturization is easy to be implemented.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: March 16, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Shupeng Deng, Lei Liu, Chi Yan Wong
  • Patent number: 10942311
    Abstract: Provided is an optical device which can control a beam quality of outgoing light. An optical device (10) includes an entrance fiber bundle (12), an exit fiber (13), and a reduced diameter part (11). The reduced diameter part (11) has (i) an entrance end surface (11a) and (ii) an exit end surface (11b) which is narrower in area than the entrance end surface (11a). In a case where the entrance end surface (11a) is viewed from a normal direction of the entrance end surface (11a), a center (C2) of the exit end surface (11b) deviates from a center (C1) of the entrance end surface (11a).
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: March 9, 2021
    Assignee: FUJIKURA LTD.
    Inventor: Tomoyuki Fujita
  • Patent number: 10935743
    Abstract: A method for providing a vertical optical via for a semiconductor substrate is described. The semiconductor substrate has a front surface and a back side. A hard mask having an aperture therein is formed on the front surface. Part of the semiconductor substrate exposed by the aperture is removed to form a via hole. The via hole has a width not exceeding one hundred micrometers and a bottom. Cladding layer(s) and core layer(s) are provided in the via hole. The core layer(s) have at least a second index of refraction greater than that of the core layer(s). A portion of the semiconductor substrate including the back side is removed to expose a bottom portion of the core layer(s) and a bottom surface of the semiconductor substrate. The vertical optical via includes the cladding and core layers. The vertical optical via extends from the front surface to the bottom surface.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: March 2, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Daniel N. Carothers, Titash Rakshit
  • Patent number: 10928601
    Abstract: An apparatus and system that includes a plurality of data devices, a network module, and a chassis. The network module may include an interface defining couplings and channels extending between the couplings defining a network topology for interconnecting data devices. The chassis may be configured to receive data devices and the network module to operably couple the received data devices via the interconnect topology defined by the network module.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: February 23, 2021
    Assignee: Seagate Technology LLC
    Inventors: Richard C. A. Pitwon, Alexander C. Worrall
  • Patent number: 10921513
    Abstract: A method is described for selecting fibers meeting requirements of a second minimum bandwidth at a second wavelength based on differential mode delay data measured at a first wavelength different from the second wavelength.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: February 16, 2021
    Assignee: Corning Incorporated
    Inventors: John Steele Abbott, III, Scott Robertson Bickham
  • Patent number: 10914904
    Abstract: Aspects of the subject disclosure may include, a system for receiving first optical power signals via an optical fiber connected with a light source of a network device, converting the first optical power signals to electrical energy utilizing an optical power converter where the electrical energy is utilized as power by the system, and transmitting or receiving electromagnetic waves that propagate along a transmission medium without requiring an electrical return path, and wherein the electromagnetic waves convey data. Other embodiments are disclosed.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: February 9, 2021
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Farhad Barzegar, Giovanni Vannucci, Paul Shala Henry, Thomas M. Willis, III, Irwin Gerszberg, Robert Bennett, Donald J. Barnickel
  • Patent number: 10914905
    Abstract: A photoelectric adapter includes a power sourcing equipment (PSE) device, an optical connector connection part and an electrical connector. The electrical connector is connectable to an electrical connector connection part of an electrical device. The PSE device includes a semiconductor laser that oscillates with electric power, thereby outputting feed light. The PSE device is driven by receiving the electric power supplied from the electrical device through the electrical connector, and outputs the feed light from the optical connector connection part. Another photoelectric adapter includes a powered device, an optical connector connection part and an electrical connector. The powered device includes a photoelectric conversion element that converts feed light into electric power. The powered device receives the feed light supplied through the optical connector connection part, converts the feed light into the electric power, and outputs the electric power from the electrical connector.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: February 9, 2021
    Assignee: KYOCERA CORPORATION
    Inventor: Tomonori Sugime
  • Patent number: 10908375
    Abstract: An optical fiber distribution element (1810) includes a chassis (1820), an optical device (1900) mounted to the chassis (1820), the optical device (1900) including a plurality of cables (2134) extending from the optical device (1900) into the chassis (1820), and a cable management device (2110/2210) mounted to the chassis (1820).
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: February 2, 2021
    Inventors: Johan Geens, Pieter Vermeulen, Eric Marcel M. Keustermans, Kristof Vastmans