Patents Examined by Eric Wong
  • Patent number: 11143823
    Abstract: The current disclosure shows a fiber optic slip ring with through bore, or an off-axis fiber optic rotary joint to provide transmission of optic data between mechanically rotational interface with a through bore. Said fiber optic slip ring with through bore may include a ring assembly and a brush block assembly within a rotor and a stator. Said ring assembly may include a ring, a ring holder and a fiber. Said brush block assembly may include a fiber brush, a brush block, an optic index matching fluid, and shaft seals. Said ring may be a donut-shaped waveguide with flat surface on one side. Said fiber brush may have an angled-surface, which is fully contacted with said flat surface on said ring at any time so that during the rotation of said rotor, the optic signal can be transmitted between said fiber and said fiber brush in either direction.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: October 12, 2021
    Assignee: PRINCETEL, INC.
    Inventors: Boying B Zhang, Hong Zhang, Liangju Lu
  • Patent number: 11137603
    Abstract: Techniques disclosed herein relate generally to surface-relief structures. In one embodiment, a surface-relief grating includes a plurality of grating ridges. The plurality of grating ridges includes a first set of grating ridges characterized by a first refractive index, and a second set of grating ridges interleaved with the first set of grating ridges and characterized by a second refractive index different from the first refractive index. The plurality of grating ridges is imprinted in a polymer layer by a nanoimprint lithography process and is exposed to a light pattern to form the first set of grating ridges and the second set of grating ridges that have different refractive indices.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: October 5, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventor: Bo Zhang
  • Patent number: 11125938
    Abstract: An optical fiber includes (i) a chlorine doped silica based core having a core alpha (Core?)?4, a radius r1, and a maximum refractive index delta ?1max % and (ii) a cladding surrounding the core. The cladding surrounding the core includes a) a first inner cladding region adjacent to and in contact with the core and having a refractive index delta ?2, a radius r2, and a minimum refractive index delta ?2min such that ?2min<?1max, b) a second inner cladding adjacent to and in contact with the first inner cladding having a refractive index ?3, a radius r3, and a minimum refractive index delta ?3min such that ?3min<?2, and c) an outer cladding region surrounding the second inner cladding region and having a refractive index ?5, a radius rmax, and a minimum refractive index delta ?3min such that ?3min<?2.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: September 21, 2021
    Assignee: Corning Incorporated
    Inventors: Dana Craig Bookbinder, Ming-Jun Li, Snigdharaj Kumar Mishra, Pushkar Tandon
  • Patent number: 11112571
    Abstract: An optical subassembly may include a plurality of optical semiconductor devices arrayed such that a plurality of light beams respectively traveling in parallel in a first direction are emitted therefrom or incident thereon. The optical subassembly may also include a carrier on which the plurality of optical semiconductor devices are mounted. Adjacent ones of the plurality of optical semiconductor devices may be located at positions shifted in a second direction orthogonal to the first direction and may be shifted in the first direction so as not to face each other in the second direction.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: September 7, 2021
    Assignee: Lumentum Japan, Inc.
    Inventors: Yuji Sekino, Akira Nakanishi, Takayuki Nakajima
  • Patent number: 11112552
    Abstract: A light-guide sheet according to the present disclosure is a light-guide sheet that takes in incident light and waveguides light in a direction intersecting with an incident direction of the incident light inside the light-guide sheet. The light-guide sheet includes: a lower refractive index layer; a light-transmissive layer that is continuously stacked with the lower refractive index layer and has a refractive index that is higher than a refractive index of the lower refractive index layer; and a diffraction grating that is disposed on the light-transmissive layer and changes a travelling direction of the incident light. A pattern of the diffraction grating is divided into a plurality of partial patterns on the light-transmissive layer, and each of the plurality of partial patterns has a concentric circular shape or a concentric polygonal shape.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: September 7, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Seiji Nishiwaki, Bunzi Mizuno
  • Patent number: 11099344
    Abstract: A cassette including a length from a first end of the cassette to a second end of the cassette, and a width from a first side of the cassette to a second side of the cassette. The cassette may include a detent arranged in the first side of the cassette or arranged in the second side of the cassette. The cassette may be arrangeable in a tray such that the at least one detent is engageable with another detent arranged in a wall of the tray. The cassette may include a groove arranged in a bottom surface of the cassette. The cassette may be arrangeable in a tray such that a protrusion of the tray is engageable with the groove of the cassette.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: August 24, 2021
    Assignee: Telect, Inc.
    Inventors: Steven W. Ellison, David Michael Smead
  • Patent number: 11092751
    Abstract: A fiber optic adapter for mating an opposing MT ferrule connectors. An adapter housing formed from a top and bottom portion holds a pair of opposing MT ferrules. The adapter housing is stackable on its vertical side.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: August 17, 2021
    Assignee: Senko Advanced Components, Inc.
    Inventors: Jeffrey Gniadek, Takuya Ninomiya
  • Patent number: 11086081
    Abstract: The present disclosure relates to conductive cooling of a small form-factor pluggable (SFP) transceiver. For example, an SFP transceiver assembly may include a cooling block and a thermally conductive pad having a thermally conductive material. The SFP transceiver assembly may include a spring finger that contacts the thermally conductive pad while the SFP transceiver is inserted into the SFP transceiver assembly to allow heat to be conducted from the SFP transceiver to the cooling block via the thermally conductive pad to conductively cool the SFP transceiver.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: August 10, 2021
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventor: Steven Watts
  • Patent number: 11061190
    Abstract: An optical connector holding two or more LC-type optical ferrules is provided. The optical connector includes an outer body, an inner front body accommodating the two or more LC-type optical ferrules, ferrule springs for urging the optical ferrules towards a mating connection, and a back body for supporting the ferrule springs. A removable inner front body for polarity change is disclosed. A multi-purpose rotatable boot assembly for polarity change is disclosed. The multi-purpose boot assembly can be pushed and pulled to insert and remove the micro connector from an adapter receptacle.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: July 13, 2021
    Assignee: Senko Advanced Components, Inc.
    Inventors: Kazuyoshi Takano, Jimmy Jun-Fu Chang
  • Patent number: 11036004
    Abstract: A compact, low-loss and wavelength insensitive Y-junction for submicron silicon waveguides. The design was performed using FDTD and particle swarm optimization (PSO). The device was fabricated in a 248 nm CMOS line. Measured average insertion loss is 0.28±0.02 dB across an 8-inch wafer. The device footprint is less than 1.2 ?m×2 ?m, orders of magnitude smaller than MMI and directional couplers.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: June 15, 2021
    Assignee: Nokia Solutions & Networks Oy
    Inventors: Yang Liu, Yangjin Ma, Ruizhi Shi, Michael J. Hochberg, Yi Zhang, Shuyu Yang, Thomas Wetteland Baehr-Jones
  • Patent number: 11029460
    Abstract: A waveguide, in particular an optical fiber, is coated and is of flexible configuration so that the waveguide can be laid in an adaptable manner, wherein the coating includes a light-frequency-converting substance so that in the event of UV light or IR light being coupled into the waveguide and an overbent waveguide, visible light escapes from the waveguide at a bend point.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: June 8, 2021
    Assignee: LEONI KABEL GmbH
    Inventor: Robert Hanf
  • Patent number: 11016316
    Abstract: Optical polarization control devices that include two pairs of squeezing plates oriented in mutually perpendicular directions are described. Compressive forces exerted by the two pairs of plates onto an optical fiber can be configured for low polarization mode dispersion. Various methods and systems in which the polarization control devices can be employed are also described.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: May 25, 2021
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: Mark E. Froggatt, Eric E. Sanborn
  • Patent number: 11002929
    Abstract: One aspect of the present disclosure relates to an enclosure system including enclosures of different sizes, shapes and styles that are all compatible with gel sealing modules having a given module form factor or a multiple of the given module form factor. In this way, gel sealing modules having one form factor and/or multiples thereof can be universally used across an entire product line of enclosures.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: May 11, 2021
    Assignee: COMMSCOPE CONNECTIVITY BELGIUM BVBA
    Inventors: Johan Geens, Bart Vos, Kristof Vastmans
  • Patent number: 10996402
    Abstract: Exemplary apparatus, systems, methods of making, and methods of using a rotary junction are provided. A rotary junction having multiple channels is provided herein. The rotary junction has a first coupling optic and a second coupling optic where the rotating optical fiber or other waveguide comping from the first coupling optic passes through the second coupling optics.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: May 4, 2021
    Assignees: Canon U.S.A., Inc., The General Hospital Corporation
    Inventors: Mitsuhiro Ikuta, Dongkyun Kang, Guillermo J. Tearney
  • Patent number: 10983411
    Abstract: A MOS optical modulator having high modulation efficiency and a method of manufacturing the same are provided. A MOS optical modulator includes: a p-type Si layer constituting an optical waveguide; a gate insulating film provided on the optical waveguide; a gate layer provided on the gate insulating film and formed of an n-type group III-V semiconductor; a first contact portion connected to the gate layer; and a second contact portion connected to the Si layer.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: April 20, 2021
    Assignee: THE UNIVERSITY OF TOKYO
    Inventors: Mitsuru Takenaka, Jae-Hoon Han, Shinichi Takagi
  • Patent number: 10935745
    Abstract: A fiber distribution hub includes a set of carrier-specific and modular service provider housings in a scalable, stacked arrangement. Each service provider housing is associated with a dedicated carrier. The multiple service provider housing modules are individually selectively-integrated with one another to create a vertically-stacked distribution housing of the hub. The distribution housing functions as a common network resource shared by all of the service provider housings. In this shared distribution configuration, all of the service provider housings have access to the same distribution network servicing a subscriber population.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: March 2, 2021
    Inventor: Forrest Tyrone Gay
  • Patent number: 10931072
    Abstract: It is desirable to provide a technology capable of improving reliability in light transmission and convenience at the time of connecting a transmission device to a cable with a simple circuit configuration. A transmitting device is provided which includes a connector receptacle unit connected to an optical-electrical composite cable, in which the connector receptacle unit includes a first electrode group, a second electrode group provided at a position rotated from the first electrode group by 180 degrees about a center of a main body of the connector receptacle unit as a reference, a first connection unit group for transmitting optical signals, and a second connection unit group for transmitting optical signals provided at a position rotated from the first connection unit group for transmitting optical signals by 180 degrees about the center of the main body of the connector receptacle unit as a reference.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: February 23, 2021
    Assignee: SONY CORPORATION
    Inventors: Toshihisa Hyakudai, Atsushi Mori, Naoto Nagaki, Manabu Sakai, Hiroshi Watanabe
  • Patent number: 10928595
    Abstract: An optical connector has a single ferrule held within a ferrule holder to make a ferrule assembly. The ferrule assembly is inserted into a connector housing with an expansion slot extending from the front end toward the back end to allow insertion of the ferrule assembly from the front of the connector housing. The ferrule holder has at least one extension extending from a outer surface thereof and a window in communication with and opening extending through the ferrule holder. The connector housing also has a window disposed in the main body, the window disposed in the main body in an outer surface adjacent the expansion slot to receive the extension from the ferrule holder.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: February 23, 2021
    Inventor: Joel C. Rosson
  • Patent number: 10921505
    Abstract: A lighting arrangement and a method of coupling light into a light guide are described. A light source is embedded within a light guide. The light guide includes first and second outer surfaces arranged on opposite sides. A forward direction extends from the light source parallel to the first outer surface. A collimator is embedded within the light guide. The collimator comprises a first reflector surface facing towards the second outer surface and a second reflector surface facing towards the first outer surface. The light source is arranged to emit light between the first and second reflector surfaces. The first reflector surface is arranged at least substantially parallel to the forward direction. At least a portion of the second reflector surface is arranged under an angle to the forward direction.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: February 16, 2021
    Assignee: Lumileds LLC
    Inventors: Varun Dev Kakkar, Hugo Johan Cornelissen, Giovanni Cennini
  • Patent number: 10914892
    Abstract: A photonic device can include an optical detector (e.g., a photodetector) coupled to silicon waveguides. Unlike silicon, germanium is an efficient detector at the wavelength of optical signals typically used for data communication. Instead of directly coupling the waveguide to the germanium, in one embodiment, the waveguide extends below the germanium but is spaced sufficiently away from the germanium so that the optical signal is not transferred. Instead, an optical transfer structure (e.g., a tapered waveguide or an optical grating) is disposed between the germanium and the waveguide. The waveguide first transfers the optical signal into the optical transfer structure which then transfers the optical signal into the germanium.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: February 9, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: Igal I. Bayn, Vipulkumar Patel, Prakash B. Gothoskar, Sean P. Anderson