Patents Examined by John Bedtelyon
  • Patent number: 10365431
    Abstract: An optical interconnect structure and method are provided. The optical interconnect structure includes a plate on which a mirror is formed. The optical interconnect structure further includes a waveguide structure comprising a waveguide core and an opening. The plate is mounted on the waveguide structure such the mirror is inserted in the opening for light coupling (i) from the waveguide core and to an optical element positioned on the plate and (ii) to the waveguide core from the optical element positioned on the plate.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: July 30, 2019
    Assignee: International Business Machines Corporation
    Inventors: Jean Benoit Héroux, Masao Tokunari
  • Patent number: 10359653
    Abstract: A thin-plate LN optical control device includes: a thin-plate LN optical waveguide element which includes an optical waveguide formed by thermal diffusion of Ti in a substrate made of lithium niobate, and a control electrode that is formed on the substrate and is configured to control a light wave propagating through the optical waveguide, and in which at least a part of the substrate is thinned; and a housing that accommodates the thin-plate LN optical waveguide element in an air-tight sealing manner. Oxygen is contained in a filler gas inside the housing.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: July 23, 2019
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Katsutoshi Kondou, Kiyotaka Nakano, Eiji Murakami
  • Patent number: 10359576
    Abstract: Low profile optical fiber connectors comprising a ferrule, a plug frame configured to receive the ferrule, and an outer housing configured to receive the plug frame. The outer housing may be configured to protrude less than about 2 mm from one end of an adapter when the low profile optical fiber connector is inserted into the adapter. The connector may include a boot sized such that the boot protrudes from the end of the adapter by less than about 15 mm.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: July 23, 2019
    Assignee: Senko Advanced Components, Inc.
    Inventors: Kazuyoshi Takano, Jimmy Jun-Fu Chang
  • Patent number: 10359563
    Abstract: A few-mode optical fiber is provided. The few-mode optical fiber includes an elliptical core capable of supporting the propagation and transmission of an optical signal with X number of LP modes at a wavelength of 1550 nm, wherein X is an integer greater than 1 and less than 20, and a cladding surrounding the core. The core has an ovality of greater than about 5.0%.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: July 23, 2019
    Assignee: CORNING INCORPORATED
    Inventors: Ming-Jun Li, Gaozhu Peng
  • Patent number: 10345524
    Abstract: An optical coupler at an edge of a photonic integrated circuit (PIC) is provided and configured to match a mode of a waveguide of the PIC to a mode of an external optical fiber. A core of the waveguide terminates prior to the edge and can include an inverted taper for mode enlargement. The waveguide cladding includes an inverted taper and is surrounded by an outer cladding material of lower refractive index, forming a second waveguide. The cladding and outer cladding cooperate to guide light between the core and the edge while the inverted taper contributes to mode enlargement. The outer cladding material is selected to have a refractive index which facilitates the mode matching to optical fiber. The coupler can be provided using lithography. Material underneath the waveguide cladding can be removed by an undercutting process and the outer cladding material deposited in place thereof.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: July 9, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Jia Jiang, Eric Bernier
  • Patent number: 10338319
    Abstract: A modified directional coupler structure is used to provide a controllable time delay or phase shift for radiation propagating through the structure. A longitudinal displacement of the interaction region of the directional coupler relative to one or both of the waveguides of the directional coupler provides this effect. Double flexure arrangements can be used to provide longitudinal displacement with substantially no corresponding lateral displacement (or vice versa). In some embodiments, lateral and longitudinal displacement of the waveguides of the directional coupler are independently adjustable to provide full control of the power splitting and phase shift/time delay of the directional coupler.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: July 2, 2019
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventor: David A. B. Miller
  • Patent number: 10338323
    Abstract: The present disclosure relates to a fiber optic connector for use with a fiber optic adapter. The fiber optic connector includes a connector housing having an end defining a plug portion. A ferrule assembly is mounted at least partially within the connector housing. The ferrule assembly includes a ferrule located at the plug portion of the connector housing. A sealing member is mounted about an exterior of the connector housing for providing a seal between the connector housing and the adapter. The fiber optic connector further includes first and second separate retaining mechanism for retaining the fiber optic connector within the fiber optic adapter.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: July 2, 2019
    Assignee: COMMSCOPE TECHNOLOGIES LLC
    Inventors: Yu Lu, Randy Reagan
  • Patent number: 10338313
    Abstract: An on-chip broadband radiation source, and methods for its manufacture such that a photonics IC comprises an optical waveguide such as a semiconductor waveguide, a thin III-V material membrane with absorption capability for absorbing an optical pump signal induced in the waveguide. The III-V membrane comprises a LED implemented therein. The photonics IC also comprises a coupling means between the waveguide and the membrane. The device provides a broadband radiation source at a wavelength longer than the wavelength of the transferred radiation. The broadband signal can then be coupled out through the waveguide and used in the chip.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: July 2, 2019
    Assignees: UNIVERSITEIT GENT, IMEC VZW
    Inventors: Roeland Baets, Günther Roelkens, Andreas De Groote, Paolo Cardile, Ananth Subramanian
  • Patent number: 10330870
    Abstract: A multi-fiber cable assembly includes an optical connector and a cable. The optical connector includes a connector body; an optical ferrule body, and alignment elements. The optical ferrule body has an end face defining a plurality of alignment openings arranged in rows and has a plurality of buckling chambers. Each buckling chamber is aligned with one of the rows of the alignment openings. The optical fibers of the cable have bare portions secured at a first end of the optical ferrule body using rigid epoxy. Each of the optical fibers is routed through one of the buckling chambers to one of the alignment holes.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: June 25, 2019
    Assignee: COMMSCOPE TECHNOLOGIES LLC
    Inventors: Yu Lu, Steven C. Zimmel, Gregory J. Schaible
  • Patent number: 10330873
    Abstract: A plug unlocking structure of an optical transceiver module includes a main body, a linkage assembly, and a pull handle. The linkage assembly is pivotally coupled to the main body. The linkage assembly includes a locking arm and at least one linking arm extended from the locking arm. The extending directions of the locking arm and the linking arm are different, and an elastic element is installed between the linking arm and the main body. The pull handle is linked to the linking arm. The linkage assembly is pivotally coupled to the main body through the pivoting point of the locking arm, and the locking arm has a latching pin. The position of the pivoting point of the locking arm is between the latching pin and the linking arm.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: June 25, 2019
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Wen-Ching Chuang, Chen-Mao Lu, Chih-Hong Cheng
  • Patent number: 10333272
    Abstract: An optical device includes: an optical module provided with an electrical pin; a printed wiring board that is connected to the electrical pin of the optical module, on which a control circuit for controlling the optical module is mounted, and on which an opening is formed; a first plate-shaped member to which the printed wiring board is fixed; a first fixing member that is inserted into the opening of the printed wiring board, and that fixes the printed wiring board with the first plate-shaped member; a second plate-shaped member that is disposed such that the printed wiring board is interposed between the second plate-shaped member and the first plate-shaped member; and a second fixing member that fixes the first fixing member with the second plate-shaped member such that the optical module is retained between the first plate-shaped member and the second plate-shaped member.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: June 25, 2019
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masayoshi Nishita, Atsushi Yamamoto, Atsushi Shinozaki
  • Patent number: 10317602
    Abstract: The present disclosure describes luminescent solar concentrators that include photoluminescent nanoparticles. The photoluminescent nanoparticles include a semiconductor nanocrystal that sensitizes the luminescence of a defect. The defect can include, for example, an atom, a cluster of atoms, or a lattice vacancy. The defect can be incorporated into the semiconductor nanocrystal, adsorbed onto, or otherwise associated with the surface of the semiconductor nanocrystal.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: June 11, 2019
    Assignees: Western Washington University, University of Washington Through Its Center For Commercialization
    Inventors: David Patrick, John Gilbertson, Stephen McDowall, Christian Erickson, Daniel R. Gamelin, Liam Bradshaw, Emily Jane McLaurin, Kathryn E. Knowles
  • Patent number: 10317769
    Abstract: In a semiconductor device connected to a first optical waveguide, a phase modulation unit, and a second optical waveguide in this order and having an optical modulator guiding light in a first direction, the phase modulation unit includes: a semiconductor layer whose length in the first direction is larger than a width in a second direction orthogonal to the first direction and which is made of monocrystalline silicon; a core part serving as an optical waveguide region formed on the semiconductor layer, and extending in the first direction; a pair of slab parts arranged on both sides of the core part in the second direction; a first electrode coupled with one of the slab parts; and a second electrode coupled with the other of the slab parts. The core part has a p type semiconductor region and an n type semiconductor region extending in the first direction, and the second direction coincides with a crystal orientation <100> of the semiconductor layer.
    Type: Grant
    Filed: April 28, 2018
    Date of Patent: June 11, 2019
    Assignee: Renesas Electronics Corporation
    Inventors: Shinichi Watanuki, Yasutaka Nakashiba, Masaru Wakabayashi
  • Patent number: 10317770
    Abstract: A Mach-Zehnder modulator includes: a first arm waveguide having first to third waveguide portions, the third waveguide portion being curved to couple the first and second waveguide portions with each other; a second arm waveguide having first to third waveguide portions, the third waveguide portion being curved to couple the first and second waveguide portions with each other, and a differential signal conductor having first and second signal conductors for driving the first and second arm waveguides, respectively. The first signal conductor has a first conductor portion and a first intersecting conductor portion connected thereto. The second signal conductor has a first conductor portion and a second intersecting conductor portion connected thereto. One of the first and second intersecting conductor portions includes an upper conducting layer, and the other includes a lower conducting layer. The upper conducting layer extends on the lower conducting layer apart therefrom.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: June 11, 2019
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Naoya Kono, Jun Otsuka
  • Patent number: 10317621
    Abstract: In an example, an Echelle grating wavelength division multiplexing (WDM) device includes a first waveguide, a slab waveguide, multiple second waveguides, an Echelle grating, and a metal-filled trench. The first waveguide includes either an input waveguide or an output waveguide. The multiple second waveguides are optically coupled to the first waveguide through the slab waveguide. The multiple second waveguides include multiple output waveguides if the first waveguide includes the input waveguide or multiple input waveguides if the first waveguide includes the output waveguide. The Echelle grating includes multiple grating teeth formed in the slab waveguide. The metal-filled trench forms a mirror at the grating teeth to reflect incident light from the first waveguide toward the multiple second waveguides or from the multiple second waveguides toward the first waveguide.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: June 11, 2019
    Assignee: Finisar Corporation
    Inventor: Daniel Mahgerefteh
  • Patent number: 10310180
    Abstract: Embodiments of the invention describe apparatuses, systems, and methods of thermal management for photonic integrated circuits (PICs). Embodiments include a first device and a second device comprising including waveguides, wherein the first and second devices have different thermal operating conditions. A first region is adjacent to a waveguide of the first device, wherein its optical mode is to be substantially confined by the first region, and wherein the first region has a first thermal conductivity to dissipate heat based on the thermal operating condition of the first device. A second region is adjacent to a waveguide of the second device, wherein its optical mode is to be substantially confined by the second region, and wherein the second region has a second thermal conductivity to dissipate heat based on the thermal operating condition of the second device. In some embodiments, thermal cross talk is reduced without significantly affecting optical performance.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: June 4, 2019
    Assignee: Aurrion, Inc.
    Inventors: Anand Ramaswamy, Jonathan Edgar Roth, Erik Norberg, Brian Koch
  • Patent number: 10307211
    Abstract: A multipoint detection fiber sensor including a plurality of sensing parts at a plurality of positions is provided. The sensing parts are able to detect curve amounts respectively. The multipoint detection fiber sensor includes a plurality of optical fibers arranged in an overall effective detection area that is an extent in which the multipoint detection fiber sensor detects curve amounts. Each of the optical fibers includes the plurality of sensing parts. The multipoint detection fiber sensor also includes a light source which supplies light to the optical fibers and a light receiver which receives light emitted through the optical fibers to which light is supplied. Furthermore, an insertion apparatus into which the multipoint detection fiber sensor is incorporated is provided.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: June 4, 2019
    Assignee: OLYMPUS CORPORATION
    Inventors: Ryo Tojo, Hiromasa Fujita
  • Patent number: 10302884
    Abstract: A fiber distribution hub (FDH) provides an interface between an incoming fiber and a plurality of outgoing fibers. The FDH includes a cabinet, at least one door pivotably mounted to the cabinet, and a frame pivotably mounted within the cabinet. The doors wrap around the sides and the front of the cabinet to provide access to both the front and sides of the frame when the doors are open. The frame can pivot out of the cabinet through the open doors to enable access to the rear of the cabinet and the rear side of the frame. The frame includes a termination region and a splitter region. The frame can include a storage region and/or a pass-through region.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: May 28, 2019
    Assignee: CommScope Technologies LLC
    Inventors: James J. Solheid, Matthew Holmberg
  • Patent number: 10295752
    Abstract: An LC adapter provided with a built-in light shielding plate includes a frame. One end of the frame is provided with interfaces for matching with connection members. An upper light shielding plate and a lower light shielding plate in a spliced connection with each other are disposed at a position within the frame close to the interfaces. Both the upper light shielding plate and the lower light shielding plate are hingedly connected to the frame through a return spring. When a connection member is inserted into an interface, the upper light shielding plate and the lower light shielding plate rotate relative to the frame and are separated from each other. When the connection member is unplugged from the interface, the upper light shielding plate and the lower light shielding plate are restored to the state of the spliced connection with each other.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: May 21, 2019
    Assignee: Suncall Technologies (SZ) Co., Ltd.
    Inventors: Lei Zhu, William Bailey, Hongbin Song
  • Patent number: 10295769
    Abstract: An opto-electric hybrid board includes: an electric circuit board including an insulation layer and electrical interconnect lines formed on the front surface of the insulation layer; and an optical waveguide provided on the back surface side of the insulation layer of the electric circuit board, with a metal layer therebetween. At least one opening is formed by removing at least part of a region of the metal layer which is overlaid on the contour of an end portion of the optical waveguide. The optical waveguide is formed, with part of the optical waveguide extending into the opening. The opto-electric hybrid board is favorably usable over a prolonged period because the end portion of the optical waveguide provided on the back surface side of the electric circuit board does not peel off the metal layer.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: May 21, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Naoyuki Tanaka, Yuichi Tsujita