Patents Examined by Guy Anderson
  • Patent number: 9696498
    Abstract: A method of fabricating an optical coupling device, comprising forming a waveguide mask layer on a substrate platform, wherein the waveguide mask layer comprises an array of openings comprising a first end and a second end opposite to the first end, immersing the substrate platform into a salt melt comprising ions to form an array of waveguides in the substrate platform through an ion diffusion process, and controlling a rate of immersion such that a diffusion depth of the ions varies as a function of a distance in a direction from the first end to the second end, wherein the array of waveguides extends in the direction from the first end to the second end.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: July 4, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Jia Jiang
  • Patent number: 9698457
    Abstract: A WDM transmitter and/or receiver optoelectronic integrated circuit includes a plurality of microresonators and corresponding waveguides and couplers that are integrally formed on a substrate. For the WDM transmitter, the microresonators and waveguides are configured to generate a plurality of optical signals at different wavelengths. Each coupler includes a resonant cavity waveguide that is configured to transmit one optical signal from one waveguide to the output waveguide such that the plurality of optical signals are multiplexed on the output waveguide. For the WDM receiver, an input waveguide is configured to provide for propagation of a plurality of optical signals at different wavelengths. Each coupler includes a resonant cavity waveguide that is configured to transmit at least one optical signal from the input waveguide to one waveguide.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: July 4, 2017
    Assignees: THE UNIVERSITY OF CONNECTICUT, Opel Solar, Inc.
    Inventor: Geoff W. Taylor
  • Patent number: 9696486
    Abstract: A photonic integrated circuit (PIC) is described. This PIC includes an inverse facet mirror on a silicon optical waveguide for optical proximity coupling between two silicon-on-insulator (SOI) chips placed face to face. Accurate mirror facets may be fabricated in etch pits using a silicon micro-machining technique, with wet etching of the silicon <110> facet at an angle of 45° when etched through the <100> surface. Moreover, by filling the etch pit with polycrystalline silicon or another filling material that has an index of refraction similar to silicon (such as a silicon-germanium alloy), a reflecting mirror with an accurate angle can be formed at the end of the silicon optical waveguide using: a metal coating, a dielectric coating, thermal oxidation, or selective silicon dry etching removal of one side of the etch pit to define a cavity.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: July 4, 2017
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Xuezhe Zheng, Ivan Shubin, John E. Cunningham, Ashok V. Krishnamoorthy
  • Patent number: 9690032
    Abstract: A lightguide includes a film including a body having a light emitting region and a light mixing region adjacent the light emitting region. A first bend with a first diameter in a first plane is formed in the film within the light mixing region, wherein a first portion of the light mixing region is positioned behind the light emitting region. A second bend is formed in the film within the light mixing region.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: June 27, 2017
    Assignee: Flex Lighting II LLC
    Inventors: Anthony J. Nichol, Zane A. Coleman
  • Patent number: 9690046
    Abstract: The optical circuit board includes a wiring board including a plurality of laminated insulating layers, and a wiring conductor disposed between the insulating layers; an optical waveguide including a lower clad layer, an upper clad layer and a core sandwiched between the lower clad layer and the upper clad layer, disposed on an upper surface of the wiring board, and extending in one direction; a reflection surface including an inner surface of a groove formed in a part of the core of the optical waveguide, and being perpendicular to an extending direction in a plane view and having a predetermined angle with respect to the upper surface in a cross sectional view; and a metal layer disposed on an upper surface of the insulating layer on the upper side than the wiring conductor of the wiring board, and set as a bottom surface of the groove.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: June 27, 2017
    Assignee: KYOCERA CORPORATION
    Inventors: Kenji Terada, Akifumi Sagara
  • Patent number: 9684191
    Abstract: Techniques for increasing efficiency of thermo-optic phase shifters using multi-pass heaters and thermal bridges are provided. In one aspect, a thermo-optic phase shifter device includes: a plurality of optical waveguides formed in an SOI layer over a buried insulator; at least one heating element adjacent to the optical waveguides; and thermal bridges connecting at least one of the optical waveguides directly to the heating element. A method for forming a thermo-optic phase shifter device is also provided.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: June 20, 2017
    Assignee: International Business Machines Corporation
    Inventors: Douglas M. Gill, Chi Xiong
  • Patent number: 9684108
    Abstract: An arrangement (20) for coupling light into a plate-like guide (25) having two surfaces (23, 24) on opposite sides of the light guide comprises an in-coupling diffraction grating (21) for diffracting an external light beam (26) incident on said in-coupling diffraction grating into the light guide in a direction enabling the in-coupled light beam to propagate within the light guide via total internal reflections at the light guide surfaces (23, 24). According to the present invention, the arrangement further comprises a deflection member (22) arranged to deflect the beam (27) initially diffracted by the in-coupling diffraction grating (21), before it hits the in-coupling diffraction grating again, out of the path determined by the in-coupling diffraction grating in order to reduce out-coupling of the already in-coupled light through the in-coupling diffraction grating.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: June 20, 2017
    Assignee: NANOCOMP OY LTD.
    Inventors: Markku Kuittinen, Pasi Laakkonen
  • Patent number: 9678273
    Abstract: A device for propagating light is described, comprising: a substrate having a semiconductor material, an insulating layer, wherein the insulating layer is arranged on the substrate, a recess reaching through the insulating layer and into the substrate, wherein the recess is at least partially filled with a filler material, and a waveguide arranged in or on the filler material.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: June 13, 2017
    Assignee: International Business Machines Corporation
    Inventors: Jens Hofrichter, Daniel S. Jubin, Edward W. Kiewra, Antonio La Porta
  • Patent number: 9664855
    Abstract: An optical filter for attenuating higher-order modes in an optical waveguide includes a shoulder slab formed of a first material having a first index of refraction and disposed on a second material having a second index of refraction, the first index of refraction being higher than the second index of refraction. The shoulder slab defines a near end having a first width, an intermediate section, adjacent to the first end section, and a far end section, adjacent to the intermediate section and opposite the first end section along a direction of beam propagation. The optical filter also includes a waveguide ridge, formed of the first material and disposed atop the shoulder slab, that traverses the shoulder slab, and is configured to guide light of a fundamental mode along the direction of beam propagation from the near end section to the far end section.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: May 30, 2017
    Assignee: Skorpios Technologies, Inc.
    Inventors: Majid Sodagar, Murtaza Askari, Guoliang Li
  • Patent number: 9664979
    Abstract: An apparatus comprising a modulation block comprising a plurality of modulators, wherein each of the plurality of modulators comprises an optical input port and an optical output port, and wherein all of the optical input ports and all of the optical output ports are positioned on one face of the modulation block. Another apparatus comprising a modulation block comprising one or more Mach-Zehnder modulators (MZMs), wherein each MZM is coupled to an optical input port, an optical output port, and at least one electrical trace, wherein all of the optical input ports and all of the optical output ports are positioned on a first side of the modulation block, and wherein all of the electrical traces are positioned on a second side of the modulation block, and a planar lightwave circuit (PLC) coupled to the modulation block via an optical interface.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: May 30, 2017
    Assignee: Futurewei Technologies. Inc.
    Inventors: Chunlei Liao, Morgan Chen, Xiao A. Shen, Yu Sheng Bai
  • Patent number: 9658408
    Abstract: An optical fiber cable may include an optical fiber that extends from a first end to a second end. The optical fiber may include a core that extends from the first end to the second end, a cladding that surrounds the core and extends from the first end to the second end, and a coating that surrounds the cladding and extends from the first end to the second end. A first length of flexible epoxy may surround a length of the coating from the first end to a first intermediate point of the optical fiber.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: May 23, 2017
    Assignee: Finisar Corporation
    Inventor: Edward R. Rossiter
  • Patent number: 9651740
    Abstract: An optical waveguide includes a waveguide body and a film disposed on a surface of the waveguide body. The film includes a base and a plurality of undercut light extraction elements disposed between the base and the surface.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: May 16, 2017
    Assignee: Cree, Inc.
    Inventors: Eric J. Tarsa, John W. Durkee
  • Patent number: 9645323
    Abstract: A hybrid optical fiber adapter comprises a first adapter end configured to receive a first optical fiber connector, and a second adapter end configured to receive a second optical fiber connector of a different type from the first optical fiber connector. The hybrid adapter further comprises a spring configured to couple to the second adapter end such that the second optical fiber connector received into the second adapter end is disposed between the spring and the second adapter end, so as to allow floating of the second optical fiber connector. In one embodiment, the first optical fiber connector is an LC connector and the second optical fiber connector is a micro connector. The hybrid adapter may be coupled to a module such that the second adapter end protrudes into the module, requiring less space inside the module compared to conventional hybrid adapters, without sacrificing optical performance.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: May 9, 2017
    Assignee: Senko Advanced Components, Inc.
    Inventors: Jeffrey Gniadek, Yuki Nishiguchi
  • Patent number: 9645321
    Abstract: A wavelength selection switch can decrease the amount of increase in size and cost of a node device by integrating and sharing the constituent components of a plurality of wavelength selection switches or optical components mounted in a node. The wavelength selection switch has: at least one input port that inputs light; at least one output port that receives light from the input port; at least one light-collecting element that alters the beam shape of the light entering from the input port; at least one scattering element that scatters the light entering from the input port into each wavelength; at least one wavefront control element that causes light of each wavelength scattered by the scattering element to be reflected to the output port for each wavelength.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: May 9, 2017
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yuichi Higuchi, Jo ji Yamaguchi, Koichi Hadama, Yuzo Ishii, Kenya Suzuki, Kazunori Seno, Takeshi Kawai
  • Patent number: 9638878
    Abstract: An optical coupling device including a housing, a first optical port provided on the housing, a second optical port provided on the housing and configured to couple to an optical fiber cable, an optical signal path guiding optical signals between the first and second optical port, a monitoring device provided on the housing, and an decoupling element optically coupled to the optical signal path and the monitoring device for coupling an optical monitoring signal coupled out from the optical signals guided between the first and second optical port onto the monitoring device. Furthermore, an optical communication system is provided, the system including an optical module with an optical signal processing device, the optical signal processing device being configured for at least one of receiving optical signals by a receiving device and transmitting optical signals by an optical signal source, and an optical coupling device guiding the optical signals.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: May 2, 2017
    Assignee: FCI Asia Pte. Ltd.
    Inventors: Sven Klinkicht, Alexander Eichler-Neumann, Gaul Holger
  • Patent number: 9638942
    Abstract: A novel phase shifter design for carrier depletion based silicon modulators, based on an experimentally validated model, is described. It is believed that the heretofore neglected effect of incomplete ionization will have a significant impact on ultra-responsive phase shifters. A low V?L product of 0.3 V·cm associated with a low propagation loss of 20 dB/cm is expected to be observed. The phase shifter is based on overlapping implantation steps, where the doses and energies are carefully chosen to utilize counter-doping to produce an S-shaped junction. This junction has a particularly attractive V?L figure of merit, while simultaneously achieving attractively low capacitance and optical loss. This improvement will enable significantly smaller Mach-Zehnder modulators to be constructed that nonetheless would have low drive voltages, with substantial decreases in insertion loss. The described fabrication process is of minimal complexity; in particular, no high-resolution lithographic step is required.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: May 2, 2017
    Assignee: Elenion Technologies, LLC
    Inventors: Thomas Baehr-Jones, Yang Liu
  • Patent number: 9632258
    Abstract: Disclosed is an optical connector ferrule including a main body portion having inside a plurality of optical paths that are parallel that are to each other; and a reinforcing member having a face parallel to an alignment direction of the plurality of the optical paths and having a linear expansion coefficient that is smaller than the linear expansion coefficient of the main body portion, wherein the reinforcing member has on a face of the optical path side thereof at least two limiting portions each having a face that limits an expansion and a contraction of the main body portion in the arrangement direction, the limiting portions being spaced apart in the arrangement direction.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: April 25, 2017
    Assignee: FUJIKURA LTD.
    Inventor: Akito Nishimura
  • Patent number: 9632264
    Abstract: An optical transceiver having a bi-directional optical subassembly (BOSA) and a twin optical port is disclosed. The BOSA is installed with respect to one of the twin port, and a plug is plugged within the other of the twin port. The plug, which is made of resin material, is rigidly set in the other of the twin port and reliably prohibited from slipping out from the port.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: April 25, 2017
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hidemi Sone, Hiromi Kurashima
  • Patent number: 9632248
    Abstract: The present invention relates to an integrated photonic device comprising a photonic substrate, and an integrated waveguide provided in or on this substrate. The waveguide is adapted for conducting radiation of a predetermined wavelength. The device further comprises a sub-wavelength grating optically connected to the waveguide, which provides a first periodic variation of the refractive index in at least one first spatial direction. The device also comprises a diffracting grating arranged over the sub-wavelength grating for coupling radiation of the predetermined wavelength in and/or out of the integrated waveguide via the sub-wavelength grating. The diffracting grating provides a second periodic variation of the refractive index in at least one second spatial direction. The first periodic variation has a first pitch that is less than half of the predetermined wavelength, while the second periodic variation has a second pitch that is at least half of the predetermined wavelength.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: April 25, 2017
    Assignees: IMEC VZW, Universiteit Gent
    Inventor: Shankar Kumar Selvaraja
  • Patent number: 9632113
    Abstract: A few-moded fiber is doped such that spatial modes of a signal exhibit different magnetic-field-dependent effects. Based on these magnetic-field-dependent effects, one can determine the electric current that induced a magnetic field that caused these effects.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: April 25, 2017
    Assignee: OFS FITEL, LLC
    Inventor: Poul Kristensen