Patents Examined by Jerry Rahll
  • Patent number: 12007632
    Abstract: An optical isolator 10 according to the present disclosure includes a substrate 11 and an optical waveguide 12 provided on the substrate 11. The optical waveguide 12 includes a first end part 13, a plurality of second end parts 14 arranged in an array, and at least one branching part 18 located between the first end part 13 and the plurality of second end parts 14. The optical waveguide 12 has a portion having non-reciprocity and gives different non-reciprocal phase shift amounts between the first end part 13 and at least two of the second end parts 14.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: June 11, 2024
    Assignee: KYOCERA Corporation
    Inventors: Hiromichi Yoshikawa, Naoki Matsui, Tomoya Sugita
  • Patent number: 12007596
    Abstract: A transparent substrate has two parallel faces and guides collimated image light by internal reflection. A first set of internal surfaces is deployed within the substrate oblique to the parallel faces. A second set of internal surfaces is deployed within the substrate parallel to, interleaved and in overlapping relation with the first set of internal surfaces. Each of the internal surfaces of the first set includes a first coating having a first reflection characteristic to be at least partially reflective to at least a first subset of components of incident light. Each of the internal surfaces of the second set includes a second coating having a second reflection characteristic complementary to the first reflection characteristic to be at least partially reflective to at least a second subset of components of incident light. The sets of internal surfaces cooperate to reflect all components of light from the first and second subsets.
    Type: Grant
    Filed: July 6, 2023
    Date of Patent: June 11, 2024
    Assignee: LUMUS LTD.
    Inventors: Yochay Danziger, Elad Sharlin
  • Patent number: 12007611
    Abstract: A package structure comprises photonic dies and an interposer structure. Each photonic die includes a dielectric layer and a first grating coupler embedded in the dielectric layer. The interposer structure is disposed below the photonic dies. The interposer structure includes an oxide layer and a second grating coupler embedded in the oxide layer. The photonic dies are optically coupled through the first grating couplers of the photonic dies and the second grating coupler of the interposer structure.
    Type: Grant
    Filed: August 26, 2022
    Date of Patent: June 11, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Feng-Wei Kuo, Chewn-Pu Jou, Hsing-Kuo Hsia, Chih-Wei Tseng
  • Patent number: 12007604
    Abstract: A method for depositing silicon oxynitride film structures is provided that is used to form planar waveguides. These film structures are deposited on substrates and the combination of the substrate and the planar waveguide is used in the formation of optical interposers and subassemblies. The silicon oxynitride film structures are deposited using low thermal budget processes and hydrogen-free oxygen and hydrogen-free nitrogen precursors to produce planar waveguides that exhibit low losses for optical signals transmitted through the waveguide of 1 dB/cm or less. The silicon oxynitride film structures and substrate exhibit low stress levels of less than 20 MPa.
    Type: Grant
    Filed: January 3, 2023
    Date of Patent: June 11, 2024
    Assignee: POET Technologies, Inc.
    Inventors: William Ring, Miroslaw Florjanczyk, Suresh Venkatesan
  • Patent number: 12001050
    Abstract: A multicore fiber includes: n pieces of first core regions in a circular shape with a radius r1 that are arranged about points P11 to P1n, and that has a first core portion and a first cladding portion; a second core region in a circular shape with a radius R1 that is arranged about the point a1, and that has a second core portion and a second cladding portion; and a cladding region that is formed on an outer circumferences of the first core region and the second core region. Further, abutting surfaces that are flat surfaces abutting on each other are formed in portions on the outer circumferences of the first core region and the second core region.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: June 4, 2024
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masanori Takahashi, Koichi Maeda, Shinichi Arai, Ryuichi Sugizaki, Masayoshi Tsukamoto
  • Patent number: 12001049
    Abstract: The present invention relates to an optical fiber sensor for shape sensing, comprising an optical fiber having embedded therein a number of at least four fiber cores (1 to 6) arranged at a distance from a longitudinal center axis (0) of the optical fiber, the number of fiber cores (1 to 6) including a first subset of at least two fiber cores (1, 3, 5) and a second subset of at least two fiber cores (2, 4, 6), the fiber cores (2, 4, 6) of the second subset being arranged to provide a redundancy in a shape sensing measurement of the fiber sensor (12?). The fiber cores (1, 3, 5) of the first subset are distributed in azimuthal direction around the center axis (0) with respect to one another, and each fiber core (2) of the second subset is arranged in non-equidistantly fashion in azimuthal direction around the center axis (0) with respect to two neighboring fiber cores (1, 3) of the first subset.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: June 4, 2024
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Anna Hendrika Van Dusschoten, Gert Wim 'T Hooft, Jeroen Jan Lambertus Horikx
  • Patent number: 11994720
    Abstract: A large-scale single-photonics-based optical switching system that occupies an area larger than the maximum area of a standard step-and-repeat lithography reticle is disclosed. The system includes a plurality of identical switch blocks, each of is formed in a different reticle field that no larger than the maximum reticle size. Bus waveguides of laterally adjacent switch blocks are stitched together at lateral interfaces that include a second arrangement of waveguide ports that is common to all lateral interfaces. Bus waveguides of vertically adjacent switch blocks are stitched together at vertical interfaces that include a first arrangement of waveguide ports that is common to all vertical interfaces. In some embodiments, the lateral and vertical interfaces include waveguide ports having waveguide coupling regions that are configured to mitigate optical loss due to stitching error.
    Type: Grant
    Filed: June 6, 2023
    Date of Patent: May 28, 2024
    Assignee: The Regents of the University of California
    Inventors: Tae Joon Seok, Ming Chiang A Wu
  • Patent number: 11992694
    Abstract: A photonic integrated circuit, PIC, comprising a plurality of semiconductor layers on a substrate, the plurality of semiconductor layers forming a PIN or PN doping structure, the PIC comprising a waveguide arranged for conducting light waves; an optical element connected to the waveguide, wherein the optical element, in operation, is in reverse-bias mode, and wherein the optical element comprises a contact layer arranged for connecting to a voltage source; wherein the waveguide comprises conducting contacts proximal to the optical element, and wherein the PIC further comprises at least one isolation section arranged in between the optical element and the conducting contacts. Corresponding methods of operation of such a PIC are also presented herein.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: May 28, 2024
    Assignee: SMART PHOTONICS HOLDING B.V.
    Inventors: Rastko Pajkovic, Erwin Antonius Josephus Maria Bente, Stefanos Andreou, Theodorus Thomas Marinus Van Schaijk
  • Patent number: 11994713
    Abstract: An optical circuit includes one or more input waveguides, a plurality of output waveguides, and a reflector structure. At least a portion of the reflector structure forms an interface with the one or more input waveguides. The portion of the reflector structure has a smaller refractive index than the one or more input waveguides. An electrical circuit is electrically coupled to the optical circuit. The electrical circuit generates and sends different electrical signals to the reflector structure. In response to the reflector structure receiving the different electrical signals, a carrier concentration level at or near the interface or a temperature at or near the interface changes, such that incident radiation received from the one or more input waveguides is tunably reflected by the reflector structure into a targeted output waveguide of the plurality of output waveguides.
    Type: Grant
    Filed: March 20, 2023
    Date of Patent: May 28, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Yu-Hao Chen, Hui Yu Lee, Jui-Feng Kuan, Chien-Te Wu
  • Patent number: 11988861
    Abstract: A diffractive optical waveguide for optical pupil expansion and a display device are provided. The diffractive optical waveguide comprises a waveguide substrate and a grating structure. The grating structure is disposed on a surface of the waveguide substrate or in the waveguide substrate and comprises a plurality of periodic structures arranged at intervals along a first direction and arranged at intervals along a second direction. The second direction is different from the first direction. A first distance between the centers of adjacent periodic structures in the first direction is smaller than a second distance between the centers of adjacent periodic structures in the second direction. The grating structure is equivalent to a one-dimensional grating with a grating vector in a vertical direction of the first direction, and the vertical direction is parallel to a plane where the grating structure is located.
    Type: Grant
    Filed: January 4, 2024
    Date of Patent: May 21, 2024
    Assignee: Jiaxing Uphoton Optoelectronics Technology Co. Ltd.
    Inventors: Zhentao Fan, Xingming Zhao, Kehan Tian
  • Patent number: 11982837
    Abstract: An object is to improve crosstalk between ports while keeping an interposer circuit small. In an interposer circuit that includes a first surface connected to an optical circuit, a second surface that is connected to a fiber block and is located opposite to the first surface in parallel with the first surface, and a plurality of connection waveguides connected to a plurality of input/output waveguides included in the optical circuit and a plurality of input/output fibers included in the fiber block, the connection waveguides each have a straight shape, and an angle (?) formed between the first surface and each of the connection waveguides is the same as an angle (?) formed between the second surface and each of the connection waveguides.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: May 14, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yuichiro Ikuma, Yusuke Nasu, Manabu Oguma, Takashi Yamada
  • Patent number: 11977264
    Abstract: This application provides a pre-connector and a communications device. The pre-connector includes a connector component and an outdoor component. The connector component includes a ferrule base and a ferrule that is slidable relative to the ferrule base. The ferrule base is configured to fasten the optical cable, and the ferrule is connected to an optical fiber that is of the optical cable and that is inserted into the ferrule base. In this way, the optical fiber can be connected to the communications device by using the ferrule. The outdoor component includes: a spindle that is sleeved on the ferrule base and that is fastened to the ferrule base; and a handle sleeve sleeved on the spindle. The outdoor component is used as a connecting piece to be detachably fastened and connected to the communications device, so as to provide a locking force used when the communications device is connected.
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: May 7, 2024
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiupeng Li, Feng Tang, Jianxiong Yu, Boyong He
  • Patent number: 11977268
    Abstract: Fiber optic cable assemblies having a construction suitable for a first deployment scenario where the optical connection is made to the device externally that may be transformed for a second deployment scenario where the optical connection is disposed within an internal cavity of the device are disclosed. The cable assembly has one or more cable legs disposed within a profile support element and are disposed under the heat shrink. The fiber optic connectors are exposed and suitable for optical connection with the heat shrink intact on the cable assembly and the profile support element further provides further flexibility using different outer housings with the cable assembly when making external optical connections to the device Thus, the concepts disclosed advantageously allow a single cable assembly to support multiple deployment scenarios in the field, thereby reducing complexity.
    Type: Grant
    Filed: May 20, 2022
    Date of Patent: May 7, 2024
    Assignee: CORNING RESEARCH & DEVELOPMENT CORPORATION
    Inventors: Kevin James Baker, Joseph Clinton Jensen, Radawan Ripumaree
  • Patent number: 11977255
    Abstract: A hollow core photonic crystal fiber (PCF) including an outer cladding region and seven hollow tubes surrounded by the outer cladding region. Each of the hollow tubes is fused to the outer cladding to form a ring defining an inner cladding region and a hollow core region surrounded by the inner cladding region. The hollow tubes are not touching each other but are arranged with distance to adjacent hollow tubes. The hollow tubes each have an average outer diameter d2 and an average inner diameter d1, wherein d1/d2 is equal to or larger than about 0.8, such as equal to or larger than about 0.85, such as equal to or larger than about 0.9. Also, a laser system.
    Type: Grant
    Filed: April 17, 2023
    Date of Patent: May 7, 2024
    Assignee: NKT Photonics A/S
    Inventors: Jens Kristian Lyngsøe, Christian Jakobsen, Mattia Michieletto
  • Patent number: 11977259
    Abstract: An optoelectronic device (20, 50) includes a planar substrate (30), an optical bus (40, 82, 84, 96, 140, 150, 180, 182, 224) disposed on the substrate and configured to convey coherent radiation through the bus, and an array (32, 72) of sensing cells (34, 74, 90, 160, 170, 200, 212, 380) disposed on the substrate. Each sensing cell includes at least one tap (92, 94, 144, 146, 226, 228) coupled to extract a portion of the coherent radiation propagating through the optical bus, an optical transducer (36, 108, 162, 172, 202, 204, 214) configured to couple optical radiation between the sensing cell and a target external to the substrate, and a receiver (114, 174, 178, 216, 218), which is coupled to mix the coherent radiation extracted by the tap with the optical radiation received by the optical transducer and to output an electrical signal responsively to the mixed radiation.
    Type: Grant
    Filed: August 17, 2022
    Date of Patent: May 7, 2024
    Assignee: LYTE AI, INC.
    Inventors: Arman Hajati, Yuval Gerson, Alexander Shpunt
  • Patent number: 11971594
    Abstract: The present disclosure provides an optical fiber cable (100). The optical fiber cable (100) includes one or more optical fiber (102), one or more loose tube (104) surrounding the one or more optical fiber (102) and an outer sheath (108) surrounding the one or more loose tube (104). The material composition of the one or more loose tube (104) is a mixture of a first material and a second material. The flexural modulus of the first material is at least 1000 MPa. The flexural modulus of the second material is at most 50 MPa. The material composition of the outer sheath (108) is a mixture of a first material and a second material. The flexural modulus of the first material is at least 500 MPa. The flexural modulus of the second material is at most 50 MPa.
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: April 30, 2024
    Inventors: Pramod Marru, Sravan Kumar
  • Patent number: 11971595
    Abstract: An enclosure for retaining at least one networking component includes a shell including a rear wall, a first sidewall, a second sidewall, an upper wall, and a lower wall that cooperate to retain the at least one networking component, a cover adapted to operably couple with the shell to define an interior volume, at least one venting member, at least one networking component mounting member, and a structure mounting member. The at least one venting member is defined by a portion of the shell to permit airflow from the interior volume to an exterior environment. The at least one networking component mounting member retains the at least one networking component. The structure mounting member is at least partially disposed on an outer surface of the shell to secure the shell with a portion of a structure.
    Type: Grant
    Filed: September 6, 2023
    Date of Patent: April 30, 2024
    Assignee: FRONTIER COMMUNICATIONS HOLDINGS, LLC
    Inventors: Erwin Wardojo, John Valdez
  • Patent number: 11971596
    Abstract: Hybrid enclosures for power and optical fiber are provided herein. A hybrid enclosure includes a power conductor terminal and an optical fiber splice area that are in separate first and second trays, respectively. In some embodiments, the power conductor terminal is a terminal of a circuit that is configured to supply power exceeding 150 Watts. Enclosures including multiple protective lids over power conductor terminal blocks are also provided.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: April 30, 2024
    Assignee: CommScope Technologies LLC
    Inventors: David Thomas, David T. Lambert, David Palfreyman, Joshua Simer, Thomas F. Craft, Jr., Rudy Musschebroeck, Andrew Williams, Willis F. James
  • Patent number: 11966082
    Abstract: Optical alignment between an optical waveguide device and an optical connection part is realized easily and at low cost. An optical circuit in which optical waveguides to be connected to optical fibers are formed includes: an alignment optical waveguide configured to be opposed to, on an optical waveguide edge face to which an optical connection part having guide holes for insertion of core wires of the optical fibers is to be fixed, a guide hole into which an alignment optical fiber is to be inserted; and a light path changing member configured to change a path of light to a vertical direction with respect to the optical axis direction of the core of the alignment optical waveguide.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: April 23, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yusuke Muranaka, Kota Shikama, Hidetaka Nishi, Ai Yanagihara
  • Patent number: 11966084
    Abstract: An integrated tunable waveguide element includes: a cladding. A high k dielectric layer is disposed within the cladding. At least one waveguide is disposed adjacent to the high k dielectric layer. At least one two dimensional monolayer pad is disposed on or in the high k dielectric layer adjacent to a portion of the at least one waveguide. An integrated 2×2 array element is also described.
    Type: Grant
    Filed: August 24, 2022
    Date of Patent: April 23, 2024
    Assignee: University of Rochester
    Inventors: Jaime Cardenas Gonzalez, Yi Zhang, Marissa Granados-Baez