Patents Examined by Daniel Petkovsek
  • Patent number: 11143825
    Abstract: A ferrule with fiber holes includes: a resin-molded portion molded by a resin; and a reinforcement member embedded in the resin-molded portion and that has a smaller linear expansion coefficient than the resin-molded portion. The reinforcement member includes fiber insertion portions that are parallel to the fiber holes. The fiber holes are formed by the resin that entered the fiber insertion portions.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: October 12, 2021
    Assignee: FUJIKURA LTD.
    Inventor: Akito Nishimura
  • Patent number: 11137532
    Abstract: Optical analytical devices and their methods of use are provided. The devices are useful in the analysis of highly multiplexed optical reactions in large numbers at high densities, including biochemical reactions, such as nucleic acid sequencing reactions. The devices include optical waveguides for illumination of the optical reactions. The devices further provide for the efficient coupling of optical excitation energy from the waveguides to the optical reactions. Optical signals emitted from the reactions can thus be measured with high sensitivity and discrimination using features such as spectra, amplitude, and time resolution, or combinations thereof. The devices of the invention are well suited for miniaturization and high throughput.
    Type: Grant
    Filed: March 1, 2020
    Date of Patent: October 5, 2021
    Assignee: Pacific Biosciences of California, Inc.
    Inventors: Annette Grot, Shang Wang, Hans Callebaut, Paul Lundquist, Stephen Turner
  • Patent number: 11137663
    Abstract: A frequency conversion device, including a source of a pump beam of electromagnetic radiation of a first wavelength, and an array of mutually spaced semiconductor islands including at least one III-V semiconductor compound and configured so that the pump beam of electromagnetic radiation of the first wavelength incident upon the semiconductor islands and electromagnetic radiation of a second wavelength incident upon the semiconductor islands cause the semiconductor islands to emit electromagnetic radiation of a third wavelength different to the first and second wavelengths by at least one of a sum frequency generation process and a difference frequency generation process, wherein the semiconductor islands are supported by a transparent support such that the support is substantially transparent to radiation of the third wavelength, wherein at least the radiation of the third wavelength passes through the transparent support.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: October 5, 2021
    Assignee: The Australian National University
    Inventors: Dragomir N. Neshev, Mohsen Rahmani, Hark Hoe Tan, Chennupati Jagadish, Yuri Kivshar, Fouad Karouta, Alexander Solntsev, Lei Xu, Giuseppe Marino, Andrey Sukhorukov
  • Patent number: 11131808
    Abstract: In one embodiment, a waveguide includes an upstream portion, a downstream portion, and an intermediate portion between the upstream portion and the downstream portion. A first band is disposed on an insulating layer, the first band oriented along a first direction. A first lateral strip and a second lateral strip are disposed on either side of the first band, the first lateral strip and the second lateral strip being thinner or interrupted along the intermediate portion.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: September 28, 2021
    Assignees: STMICROELECTRONICS (ALPS) SAS, STMICROELECTRONICS (CROLLES 2) SAS
    Inventors: Charles Baudot, Sylvain Guerber, Patrick Le Maitre
  • Patent number: 11131820
    Abstract: Various implementations of epoxy transitions for fiber optic modules are disclosed. As disclosed herein, a fiber optic module system may include a fiber optic module holding a plurality of multi-fiber adapters at a front of the fiber optic module, a multi-fiber cable, and an epoxy transition to transition the multi-fiber cable to a plurality of individual optical fibers inside the fiber optic module. The epoxy transition may be filled with an epoxy to secure the individual optical fibers inside the epoxy transition.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: September 28, 2021
    Assignee: Panduit Corp.
    Inventors: Thomas M. Sedor, Mark T. Sargis
  • Patent number: 11131796
    Abstract: Described examples include a display having a first light source configured to provide a first light and a second light source configured to provide a second light. The display also having a spatial light modulator configured to produce a first modulated light by modulating the first light and configured to produce a second modulated light by modulating the second light. The display also having a first diffractive optical element configured to receive the first modulated light and configured to provide a first image having a first characteristic to display optics; and a second diffractive optical element configured to receive the second modulated light and configured to provide a second image having a second characteristic to the display optics.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: September 28, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Terry Alan Bartlett, Stephen Aldridge Shaw, Vivek Kumar Thakur
  • Patent number: 11126064
    Abstract: An object is to provide, for example, an optical wavelength conversion device capable of highly efficient wavelength conversion on the surface of, or inside, the main body of any of various shapes, such as a bulky shape and a fiber shape. The optical wavelength conversion device includes a main body configured to allow light to propagate therein, and a plurality of crystal regions arranged inside the main body along a propagation direction of the light. The plurality of crystal regions each have a spontaneous polarization oriented along the propagation direction (i.e., spontaneous polarization having a polarization orientation coinciding with the propagation direction).
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: September 21, 2021
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Shigehiro Nagano
  • Patent number: 11126062
    Abstract: A method of generating an m photon entangled state includes inputting a photon into each of a first plurality of modes including first and second pairs of modes. The first plurality of modes is coupled with a second plurality of modes. Zero or more photons are detected in the second plurality of modes. The method includes, when more than m photons remain in the first plurality of modes: detecting zero or more photons in a third plurality of modes coupled with the first plurality of modes; determining, based on a number of photons detected, whether the photons remaining in the first plurality of modes are in the entangled state. The method includes, when the photons remaining in the first plurality of modes after the second detection operation are in the entangled state, outputting the photons remaining in the first plurality of modes.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: September 21, 2021
    Assignee: PSIQUANTUM CORP.
    Inventors: Konrad Kieling, Terence Rudolph, Mercedes Gimeno-Segovia
  • Patent number: 11112563
    Abstract: Provided is an optical multiplexing circuit. The waveguide width of each waveguide is set such that the effective refractive index of a first optical waveguide with a first light beam in the 0-th order mode is equal to the effective refractive index of a MM conversion waveguide with the first light beam in the higher order mode and that the effective refractive indexes of the MM conversion waveguide with second and third light beams in the higher order mode are not equal to the effective refractive indexes of a second optical waveguide with the second and third light beams in the 0-th order mode.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: September 7, 2021
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Junji Sakamoto, Kei Watanabe, Toshikazu Hashimoto
  • Patent number: 11105997
    Abstract: An optical fiber holding device may comprise a first track and a second track. The first track may be configured to hold and guide a first optical fiber from a first track input location to a first track output location, wherein the first track is configured to allow the first optical fiber to connect to a first optical component and a first optical communication point. The second track may be configured to hold and guide a second optical fiber from a second track input location to a second track output location, wherein the second track is configured to allow the second optical fiber to connect to a second optical component and a second optical communication point.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: August 31, 2021
    Assignee: Lumentum Operations LLC
    Inventor: Patrick Wallace
  • Patent number: 11105982
    Abstract: An imaging waveguide for a visual display includes a substrate for guiding image light therein by total internal reflection (TIR). An input grating is supported by the substrate for coupling the image light into the imaging waveguide. An output grating is supported by the substrate and spaced apart from the input grating for coupling the image light guided in the substrate out of the imaging waveguide for observation by a user. A gap filling overcoat is formed on and within the output grating, but not on or within the input grating. The material is characterized by a refractive index between 1.40 and 1.80 at 500 nm, absorption between 0% and 1% in the visible region of the electromagnetic spectrum, and % haze between 0% and 0.2% in the visible region of the electromagnetic spectrum.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: August 31, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventor: Ankit Vora
  • Patent number: 11106111
    Abstract: Methods, systems, and apparatus for generating Kerr frequency combs. The system includes a continuous-wave pump laser to provide a master comb pump. The system includes a microresonator that generates a master Kerr frequency comb using the master comb pump. The system includes a splitter that splits the master Kerr frequency comb into multiple CW comb lines including a first comb line used to transmit a data signal and a second comb line used as a slave comb pump. The system includes a combiner that is configured to combine the first comb line and the second comb line to produce a combination of a data channel and CW comb line. The system includes a second demultiplexer that extracts the second comb line that is used as the slave comb pump. The system includes another microresonator that uses the second comb line and generates a slave Kerr frequency comb.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: August 31, 2021
    Assignee: UNIVERSITY OF SOUTHERN CALIFORNIA
    Inventors: Peicheng Liao, Alan Willner, Ahmed Almaiman, Changjing Bao
  • Patent number: 11099343
    Abstract: The present disclosure relates to a re-enterable enclosure for a fiber optic network. The enclosure can include features such as a low compression-force perimeter gasket, cable seals constructed to seal effectively seal triple points, multi-function port size reducer plugs and multi-function blind plugs.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: August 24, 2021
    Assignee: COMMSCOPE CONNECTIVITY BELGIUM
    Inventors: Bart Mattie Claessens, Emilie De Groe, Maarten Michiels
  • Patent number: 11095279
    Abstract: This disclosure provides a PSR-PWM technique for high power active front-end inverters to damp a specific inter-harmonic that may cause relative sub-synchronous resonance in power system. Due to the strong interaction between wind power converters, photovoltaic converters, FACTS devices and HVDC transmission, low-frequency oscillations occur from a few Hz to dozens of Hz, or even high-frequency oscillations ranging from about 300-2000 Hz. Meanwhile, low-frequency oscillations ranging from 0.6 Hz to 7 Hz occur in the power supply systems of many electric locomotives. Even in the case of large-scale train outage, low-frequency oscillation will lead to abnormal locomotive dispatching system; in addition, the power grid voltage disturbance and flicker caused by a large number of high-power are furnaces and other nonlinear loads in the industrial field with a passband inter-harmonic frequency ranging from 0.05 Hz-90 Hz and so on are detected.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: August 17, 2021
    Assignee: WUHAN UNIVERSITY
    Inventors: Hui Zhang, Yigang He, Kaipei Liu, Yuzheng Guo, Yongguang Cheng, Jie Xie, Lei Xu, Jintao Zhou, Yuanzhe Ge, Qizhen Li
  • Patent number: 11092873
    Abstract: Reconfigurable electro-optic frequency shifters are provided. In various embodiments, the optical frequency shifter comprises a continuous optical spectrum medium; a discrete optical spectrum medium optically coupled to the continuous optical spectrum medium; and a tunable element operably coupled to the discrete optical spectrum medium, wherein: the discrete optical spectrum medium has N optical modes (I:{i1 . . . iN}), said optical modes being ordered and equidistant in a frequency domain, wherein N is an integer equal to or greater than 3, each of the optical modes (in?I) having a coupling constant ?e,n with respect to the continuous optical spectrum medium, wherein at least one of the coupling constants ?e,n is different from the other coupling constants, the optical modes (I) having a coupling constant ? with respect to one another, wherein the tunable element is configured to control the coupling constant ?.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: August 17, 2021
    Assignee: President and Fellows of Harvard College
    Inventors: Marko Loncar, Yaowen Hu, Mian Zhang
  • Patent number: 11092754
    Abstract: A pre-terminated end of a fiber optic cable has a protective cap that protects the optical fiber and the ferrule assembly at the terminal end. The protective cap has an attachment feature enabling a pull cord to attach to the protective cap. The protective cap has a body including an exterior surface and a receptacle formed in the body and configured to receive a portion of the fiber optic cable, and the attachment feature. The attachment feature includes a cavity formed in a tip of the body and at least two openings formed in the exterior surface of the body and connected to the cavity.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: August 17, 2021
    Assignee: Clearfield, Inc.
    Inventors: John P. Hill, Daniel J. Johnson
  • Patent number: 11092759
    Abstract: A optical fiber connecting device includes a hollow main body and a dust-proof unit. The hollow main body includes a first hollow inserting portion for insertion of a fiber optic connector, a second hollow inserting portion oppositely of the first hollow inserting portion, and a flange between the first and second hollow inserting portions. The second hollow inserting portion has a threaded outer surface. The dust-proof unit includes a dust-proof sleeve that has a threaded inner surface. The dust-proof sleeve is removably sleeved around the second hollow inserting portion by an inter-engagement of the threaded inner and outer surfaces.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: August 17, 2021
    Assignee: Amphenol Fiber Optic Technology (Shenzhen) Co., Ltd.
    Inventors: Ling-Hua Zhu, Xing-Fu Mo, Jinan Zhou, Anh Nguyen
  • Patent number: 11086191
    Abstract: An optical quantum state converter comprises an optical fiber input port configured to receive an optical signal comprising an optical quantum state at a first wavelength from an optical source. An optical combiner having a first input is coupled to the optical fiber input port. An optical pump source having an output that is coupled to a second input of the optical combiner provides an optical pump signal at a pump signal wavelength to a second input of the combiner. A nonlinear optical waveguide having an input that is coupled to an output of the optical combiner converts the optical quantum state at the first wavelength to an optical quantum state at a second wavelength determined by the optical pump signal.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: August 10, 2021
    Assignee: Notchway Solutions, LLC
    Inventors: Katherine L. Hall, Kristin A. Rauschenbach
  • Patent number: 11079559
    Abstract: A universal sub slot module is configured to be inserted in a slot in a hardware module that is configured to be inserted in one of a chassis and rack mounted unit. The universal sub slot module includes a printed circuit board; an optics component on the printed circuit board; a data plane and a control plane on the printed circuit board and communicatively coupled to the optics components; and connectors on the printed circuit board and communicatively coupled to the data plane and the control plane, wherein the connectors are configured to connect to corresponding connectors in the one or more hardware modules.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: August 3, 2021
    Assignee: Ciena Corporation
    Inventors: Marc Leclair, Mitchell O'Leary, Nicola Benvenuti, James McGale, Daniel Rivaud, Sheldon Button
  • Patent number: 11079542
    Abstract: Systems and methods for an integrated photon source and detector of entangled photons are provided. In certain embodiments, a system includes a first waveguide layer comprising a photon producing waveguide configured to provide two photons propagating in orthogonal modes of a single waveguide. The system also includes a second waveguide layer comprising a photon conditioning waveguide network, the second waveguide layer formed on the first waveguide layer, the second waveguide layer having a different index of refraction.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: August 3, 2021
    Assignee: Honeywell International Inc.
    Inventors: Chad Fertig, Matthew Wade Puckett, Steven Tin