Patents Examined by Michael Stahl
  • Patent number: 10690870
    Abstract: An optical communication subassembly includes one or more optoelectronic devices, one or more optical elements, and a transceiver light coupling unit. Each optical element is configured to change a divergence of the outgoing light relative to a divergence of the incoming light and is spaced apart from and optically aligned with a corresponding optoelectronic device. The transceiver light coupling unit has a mating surface configured for mating with a connector light coupling unit attached to an optical waveguide. A mating direction of the optical light coupling unit forms an angle with the mating surface of the transceiver light coupling unit such that when the connector light coupling unit mates with the transceiver light coupling unit, the angle between the mating direction of the connector light coupling unit and the mating surface of the transceiver light coupling unit causes the optical waveguide to bend.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: June 23, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: Terry L. Smith, Barry J. Koch, Michael A. Haase, Alexander R. Mathews
  • Patent number: 10686534
    Abstract: A method for optical interconnection between semiconductor chips according to an embodiment include converting an electrical signal to an optical signal, transmitting the optical signal to a second substrate disposed above or below a first substrate using an optical transmitter provided on the first substrate, receiving the optical signal using an optical detector provided on the second substrate, and converting the received optical signal to an electrical signal. Accordingly, using a mid-infrared wavelength range of light that is transparent to semiconductor materials such as silicon and next-generation high-mobility materials, it is possible to enable interconnection between stacked semiconductor chips without using metal wiring.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: June 16, 2020
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jaehoon Han, Sanghyeon Kim, Hyunsu Ju, Jin-Dong Song
  • Patent number: 10684435
    Abstract: A telecommunications device includes a rack defining right, left, front, rear, top, and bottom sides, the rack defining mounting locations in a stacked arrangement from the bottom to the top, the mounting locations for receiving modules defining connection locations. A cable storage bay is located at one of the right and left sides of the rack and defines front and rear cable storage areas. Both the front and rear cable storage areas include cable management structures for managing and guiding cables toward and away from the connection locations. A trough is defined at the top of the rack, the trough configured for extending cables to other racks in a front to rear direction, the trough also defining a cable drop-off communicating with the cable storage bay for extending cables to either of the front or rear cable storage areas for further connection to the connection locations.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: June 16, 2020
    Assignee: CommScope Technologies LLC
    Inventors: James J. Solheid, Paul Kmit, Timothy Haataja, Rob Szklarz
  • Patent number: 10678012
    Abstract: A fiber optic cable assembly suitable for providing mesh connectivity includes a fiber shuffle region arranged between first and second cable assembly sections that each include multiple tubes each containing a group of optical fibers, with a jacket provided over one or both cable assembly sections. The fiber shuffle region may be compact in width and length, and integrated into a trunk cable. Optical fibers remain in sequential order in groups at ends of the cable assembly sections, where the fibers may be ribbonized and/or connectorized. A fabrication method for such a fiber optic cable assembly is also disclosed.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: June 9, 2020
    Assignee: Corning Research & Development Corporation
    Inventor: Qi Wu
  • Patent number: 10678011
    Abstract: A telecommunications system (14) includes a chassis (12) defining a front (18), a rear (16), and a plurality of first signal connection locations (38) adjacent the rear (16). A plurality of removable cassettes (10) are housed within the chassis (12), each including a cassette body (68) defining a fixed portion (80) that is coupled to one of the first signal connection locations (38) on the chassis (12) and a movable portion (82) that telescopically slides relative to the fixed portion (80), wherein the movable portion (82) is configured for movement in a direction from the front (18) to the rear (16) of the chassis (12), each cassette (10) defining a plurality of second signal connection locations (58).
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: June 9, 2020
    Assignees: CommScope Technologies LLC, CommScope Connectivity UK Limited
    Inventors: Kamlesh G. Patel, John Paul Anderson, Christopher Charles Taylor, David Patrick Murray
  • Patent number: 10656080
    Abstract: A gas detection apparatus (100) includes a first layer (1) and a second layer (2) disposed opposite the first layer (1) in a predetermined direction (z-axis direction). The first layer (1) includes a light emitter that emits light and a light receiver that receives the light after the light passes through a waveguide. The second layer (2) includes a light input unit of the waveguide opposite the light emitter in the predetermined direction (z-axis direction) and a light output unit of the waveguide opposite the light receiver in the predetermined direction (z-axis direction). The gas detection apparatus (100) can be miniaturized.
    Type: Grant
    Filed: July 4, 2019
    Date of Patent: May 19, 2020
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Toshiaki Fukunaka, Edson Gomes Camargo
  • Patent number: 10656326
    Abstract: An optical fiber in which the increase of attenuation can be reduced is offered. An optical fiber is made of silica glass and includes a core and a cladding enclosing the core. The refractive index of the cladding is smaller than that of the core. The core includes chlorine and any of the alkali metal group. The chlorine concentration is 1 ppm or more in the whole region of the core. In the whole region of the core, the absolute value of rate of radial change of the chlorine concentration is smaller than 2000 ppm/?m.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: May 19, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hirotaka Sakuma, Yoshiaki Tamura, Yuki Kawaguchi
  • Patent number: 10649213
    Abstract: An eyepiece for use in front of an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a portion of a light beam incident on the diffractive optical element toward the eye as a first order transmission.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: May 12, 2020
    Assignee: Magic Leap, Inc.
    Inventors: Robert D. Tekolste, Victor K. Liu
  • Patent number: 10649137
    Abstract: There are disclosed herein various implementations of a silicon-on-insulator (SOI) die including a light emitting layer pedestal-aligned with a light receiving segment, as well as methods for fabricating such an SOI die. The SOT die includes a pedestal region of the SOI die having a pedestal including a thin top silicon segment, a buried oxide (BOX) segment, and a handle wafer segment. The SOI die also includes an integrated circuit (IC) region having a thin silicon waveguide that is aligned with the thin top silicon segment in the pedestal region. A light emitting layer is situated over the pedestal in the pedestal region, the light emitting layer being aligned with the light receiving segment to situated over the thin silicon waveguide in the IC region.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: May 12, 2020
    Assignee: Newport Fab, LLC
    Inventors: Edward Preisler, Oleg Martynov, Farnood Rezaie
  • Patent number: 10649140
    Abstract: Structures including a waveguide core and methods of fabricating a structure including a waveguide core. A back-end-of-line interconnect structure includes a cap layer, an interlayer dielectric layer, and one or more metal features embedded in the interlayer dielectric layer. The interlayer dielectric layer is stacked in a vertical direction with the cap layer. The one or more metal features have an overlapping arrangement in a lateral direction with the waveguide core, which is arranged under the back-end-of-line interconnect structure.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: May 12, 2020
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Yusheng Bian, Ajey Poovannummoottil Jacob, Abu Thomas
  • Patent number: 10641978
    Abstract: A distribution point unit for coupling an external electrical and optical cable comprises a casing comprising a first port to receive the external optical cable and a second port to receive the external electrical cable. The distribution point unit comprises an electronic board comprising electronic components and at least one heat transferring device. A tray comprises at least one hole to receive a section of the at least one heat transferring device. The at least one heat transferring device is thermally coupled to at least one of the electronic components to thermally couple the at least one electronic component to the casing.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: May 5, 2020
    Assignee: Corning Optical Communications LLC
    Inventors: Lukasz Jan Rutowicz, Martin Spreemann
  • Patent number: 10642125
    Abstract: Structures providing optical beam steering and methods of fabricating such structures. A first grating coupler has a first plurality of grating structures spaced with a first pitch along a first axis. A second grating coupler has a second plurality of grating structures spaced with a second pitch along a second axis. An optical switch is coupled to the first grating coupler and to the second grating coupler. The optical switch is configured to select between the first grating coupler and the second grating coupler for optical signal routing. The second axis of the second grating coupler is aligned nonparallel to the first axis of the first grating coupler.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: May 5, 2020
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: John J. Ellis-Monaghan, Steven M. Shank, Vibhor Jain, Anthony K. Stamper, John J. Pekarik
  • Patent number: 10627574
    Abstract: The present application discloses a Transverse Electric (TE) polarizer. The TE polarizer includes a semiconductor substrate having an oxide layer. The TE polarizer further includes a waveguide embedded in the oxide layer. Additionally, the TE polarizer includes a plate structure embedded in the oxide layer substantially in parallel to the waveguide with a gap distance. In an embodiment, the plate structure induces an extra transmission loss to a Transverse Magnetic (TM) mode in a light wave traveling through the waveguide.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: April 21, 2020
    Assignee: INPHI CORPORATION
    Inventors: Jie Lin, Masaki Kato
  • Patent number: 10630040
    Abstract: The present disclosure relates more to mode mixing optical fibers useful, for example in providing optical fiber laser outputs having a desired beam product parameter and beam profile. In one aspect, the disclosure provides a mode mixing optical fiber that includes a core having a refractive index profile; and a cladding disposed about the core. The core of the mode mixing optical fiber supports at least two (e.g., at least five) guided modes at the wavelength. The mode mixing optical fiber is configured to substantially distribute optical radiation having the wavelength propagating therein (e.g., input at its input end or generated or amplified within the core) among a plurality of the guided modes (e.g., to distribute a substantial fraction of the optical radiation having the wavelength propagating therein from its lower-order guided modes to its higher-order guided modes).
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: April 21, 2020
    Assignee: Nufern
    Inventors: Clemence Jollivet, Kevin Farley, Jaroslaw Abramczyk, Michael Conroy, Kanishka Tankala, Peyman Ahmadi, Eric Lim
  • Patent number: 10620375
    Abstract: A modulator comprises one or more resonators. Each resonator has a light confining closed loop structure, such as a ring structure, and two, three or more electrodes associated with the light-confining structure, and may be a micro-resonator. An optical signal is modulated by a digital signal using the resonator. The procedure comprises obtaining the digital signal, mapping the signal using a mapping function to produce a transformed digital signal, the transformed digital signal being selected to produce, say linear, output from the resonator, inputting the transformed digital signal via electrodes onto the resonator; and modulating the optical signal via coupling from the resonator. Suitable mapping produces 16 QAM and other modulation schemes.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: April 14, 2020
    Assignee: Ramot at Tel-Aviv University Ldt.
    Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
  • Patent number: 10613415
    Abstract: In the examples provided herein, an optical logic gate includes multiple couplers, where no more than two types of couplers are used in the optical logic gate, and further wherein the two types of couplers consist of: a 3-dB coupler and a weak coupler with a given transmission-to-reflection ratio. The optical logic gate also includes a first resonator, wherein the first resonator comprises a photonic crystal resonator or a nonlinear ring resonator, wherein in operation, the first resonator has a dedicated continuous wave input to bias a complex amplitude of a total field input to the first resonator such that the total field input is either above or below a nonlinear switching threshold of the first resonator, where the optical logic gate is an integrated photonic circuit.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: April 7, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Charles M. Santori, Jason Pelc, Ranojoy Bose, Cheng Li, Raymond G. Beausoleil
  • Patent number: 10606019
    Abstract: A breakout assembly for transitioning a multi-fibre optical cable into one or more individual fibres is disclosed. The breakout assembly includes a first housing segment engageable at a first end to the cable and engageable at a second end with one or more furcation tubes that each receive an individual fibre from the cable, and a second housing segment engageable at a first end to the cable and engageable at a second end with one or more furcation tubes that each receive an individual fibre from the cable. The first housing segment is securable to the second housing segment so as to encapsulate at least a portion of the individual fibres as they break out from the cable.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: March 31, 2020
    Assignee: CommScope Technologies Australia Pty Ltd
    Inventor: Benjamin Field
  • Patent number: 10598876
    Abstract: A photonic interface for an electronic circuit is disclosed. The photonic interface includes a photonic integrated circuit having a modulator and a photodetector, and an optical fiber or fibers for optical communication with another optical circuit. A modulator driver chip may be mounted directly on the photonic integrated circuit. The optical fibers may be placed in v-grooves of a fiber support, which may include at least one lithographically defined alignment feature for optical alignment to the silicon photonic circuit.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: March 24, 2020
    Assignee: Elenion Technologies, LLC
    Inventors: Michael J. Hochberg, Ari Jason Novack, Peter D. Magill
  • Patent number: 10591691
    Abstract: An all-dielectric self-supporting (ADSS) cable may include a central strength member and a plurality of buffer tubes helically wrapped around the central member. Each of the plurality of buffer tubes may house at least one optical fiber, and an outer jacket may surround the plurality of buffer tubes and the central strength member. Additionally, the central strength member may include a plurality of different strength layers including a first layer formed from relatively flexible material and a second layer formed from relatively rigid material.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: March 17, 2020
    Assignee: Superior Essex International LP
    Inventor: Christopher Robert Evans
  • Patent number: 10591661
    Abstract: Methods, systems, and products illuminate display devices. An image is injected into a waveguide. The image propagates at total internal reflectance within the waveguide. A frustrator withdraws a frustrated image from the waveguide, and the frustrated image may be displayed to a viewer.
    Type: Grant
    Filed: January 6, 2018
    Date of Patent: March 17, 2020
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventor: Kevin A. Li