Patents Examined by Akm E. Ullah
  • Patent number: 10663665
    Abstract: A ribbon handler device holds a twelve fiber ribbon during thermal stripping, cleaving and mass fusion splicing. The handler device includes a first body having a first array of grooves that are tapered to reduce a nominal spacing of a first set of optical fibers and a second body having a second array of grooves that are tapered to increase a nominal spacing of a second set of optical fibers such that each fiber of the first set of optical fibers aligns with a corresponding fiber of the second set of optical fibers for efficient splicing.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: May 26, 2020
    Assignee: CORNING RESEARCH & DEVELOPMENT CORPORATION
    Inventor: Bradley Jerome Blazer
  • Patent number: 10663326
    Abstract: A fiber sensor includes an optical fiber configured for operation at a wavelength from about 800 nm to about 1600 nm. The optical fiber includes a cladding that is defined by a fiber outer diameter and a core that is surrounded by the cladding. The core of the optical fiber has a Rayleigh scattering coefficient, ?s, that is controlled by controlling a concentration of one or more dopants in the core. The Rayleigh scattering coefficient is tuned to be within a predetermined range of an optimum Rayleigh scattering coefficient for a given total length, L, of the optical fiber. The predetermined range is from about 70% of the optimum ?s to about 130% of the optimum ?s.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: May 26, 2020
    Assignee: Corning Incorporated
    Inventors: Anthony Artuso, Valery A Kozlov, Ming-Jun Li
  • Patent number: 10663656
    Abstract: An embodiment of the invention relates to an optical device which is capable of realizing a secondary nonlinear optical phenomenon. The optical device is a fiber-type optical device which is comprised of glass containing SiO2, and includes a core region, a first cladding region, and a second cladding region. At least a part of a glass region configured by the core region and the first cladding region has such a repetition structure that a first section serving as a poled crystal region and a second section serving as an amorphous region are alternately disposed along a longitudinal direction of the optical device.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: May 26, 2020
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Shigehiro Nagano
  • Patent number: 10656358
    Abstract: An optical fiber distribution module includes a base having a surrounding wall, a cover, and a sealing element in the cover. A pair of cable ports are formed in the base wall to pass an outdoor fiber distribution cable through an interior region of the module. One or more fiber ports in the wall pass corresponding drop fibers from the interior region where the fibers connect to designated fibers of the distribution cable, to a number of premises for which the fibers are designated inside a multi-dwelling unit building. Grommet seals are dimensioned and formed to be inserted in any unused fiber ports, and to surround the distribution cable and the drop fibers in their corresponding ports. The grommet seals cooperate with the sealing element in the cover to seal all the ports from the environment when the module is closed.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: May 19, 2020
    Assignee: OFS FITEL, LLC
    Inventors: James C Bandy, Denis E Burek, Xavier Chiron, Lynda Price, Willard C White
  • Patent number: 10613411
    Abstract: A phased array that comprises a predetermined number of emitter/receiver elements; said emitter/receiver elements being arranged on a array formed of stacked rows, wherein the emitter/receiver elements in each row of the array are distributed according to a pseudo-random pattern; and the heights of the rows vary according to a pseudo-random pattern.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: April 7, 2020
    Assignee: HRL Laboratories, LLC
    Inventors: Daniel Yap, Kevin Geary, Carson R. White
  • Patent number: 10613335
    Abstract: Provided is a light guide plate for an image display device which uses lead-free glass, has excellent color reproducibility and a light weight, and may obtain a wide viewing angle. A light guide plate for an image display device, which guides image light inputted from an image display element and outputs the image light toward a user's pupil, is configured to be made of lead-free glass having a refractive index of 1.8 or more with respect to a wavelength of the image light, and to have internal transmittance of 0.6 or more with respect to a wavelength of 400 nm when a plate thickness is 10 mm.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: April 7, 2020
    Assignee: HOYA CANDEO OPTRONICS CORPORATION
    Inventor: Yasuo Kogure
  • Patent number: 10613280
    Abstract: An optical receptacle is disclosed. The optical receptacle includes a ferrule that includes an inner hole extending in a first direction and a distal end face having an opening in the inner hole, an optical fiber disposed in the inner hole, the optical fiber having a first end exposed from the opening, a metal member that includes a first through hole extending in the first direction and holds the ferrule in the first through hole, a metal body that includes a second thorough hole extending in the first direction and holds the metal member in the second thorough hole, a low dielectric constant material formed inside the ferrule and outside the optical fiber. The low dielectric constant material has a dielectric constant lower than a dielectric constant of the ferrule.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: April 7, 2020
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Hiromi Kurashima
  • Patent number: 10606017
    Abstract: A fiber optic enclosure assembly includes a housing having an interior region and a bearing mount disposed in the interior region of the housing. A cable spool is connectedly engaged with the bearing mount such that the cable spool selectively rotates within the housing. A termination module disposed on the cable spool so that the termination module rotates in unison with the cable spool. A method of paying out a fiber optic cable from a fiber optic enclosure includes rotating a cable spool, which has a subscriber cable coiled around a spooling portion of the cable spool, about an axis of a housing of the fiber optic enclosure until a desired length of subscriber cable is paid out. A termination module is disposed on the cable spool.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: March 31, 2020
    Assignee: CommScope Technologies LLC
    Inventors: Scott C. Kowalczyk, Jonathan Walter Coan, Jonathan R. Kaml
  • Patent number: 10606015
    Abstract: A fiber optic enclosure assembly includes a housing having an interior region and a bearing mount disposed in the interior region of the housing. A cable spool is connectedly engaged with the bearing mount such that the cable spool selectively rotates within the housing. A termination module disposed on the cable spool so that the termination module rotates in unison with the cable spool. A method of paying out a fiber optic cable from a fiber optic enclosure includes rotating a cable spool, which has a subscriber cable coiled around a spooling portion of the cable spool, about an axis of a housing of the fiber optic enclosure until a desired length of subscriber cable is paid out. A termination module is disposed on the cable spool.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: March 31, 2020
    Assignee: CommScope Technologies LLC
    Inventors: Scott C. Kowalczyk, Jonathan Walter Coan, Jonathan R. Kaml
  • Patent number: 10606005
    Abstract: An optical cable includes a plurality of optical fibers sealed within a metal tube, a polymer inner sheath surrounding the metal tube and operatively connected to the metal tube, and an outer sheath disposed over the polymer inner sheath.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: March 31, 2020
    Assignee: Prysmian S.p.A.
    Inventors: Josep Maria Martin Regalado, Josep Oriol Vidal Casanas, Matias Campillo Sanchez, Ester Castillo Lopez
  • Patent number: 10607699
    Abstract: A system installed on an aircraft. The system includes a memory storing static information in one or more optical fibre gratings; and an interrogator. The interrogator includes a light source configured to transmit interrogation light to the memory, a receiver configured to receive return light from the memory, and an analyser configured to analyse the return light to obtain the static information.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: March 31, 2020
    Assignee: AIRBUS OPERATIONS LIMITED
    Inventors: Christopher Wood, Alessio Cipullo, Kayvon Barad
  • Patent number: 10598888
    Abstract: There is provided an intermittent connection type optical fiber ribbon in which at least a part of a plurality of optical fibers that are arranged to be in parallel come into contact with each other, and between a part or the entirety of the optical fibers, a connection portion at which the adjacent optical fibers are connected to each other with an adhesive resin, and a non-connection portion at which the adjacent optical fibers are not connected to each other with the adhesive resin, are intermittently provided in the longitudinal direction, in which an outer diameter dimension of the optical fiber is equal to or less than 0.22 mm, and an inter-center distance of the adjacent optical fibers is 0.20±0.02 mm, and in which at least a part of the outer periphery of the optical fiber has no adhesive resin attached thereto.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: March 24, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Fumiaki Sato, Yoshiaki Nagao, Nobuyuki Suzuki
  • Patent number: 10598967
    Abstract: An optical modulator may include a lower waveguide, an upper waveguide, and a dielectric layer disposed therebetween. When a voltage potential is created between the lower and upper waveguides, these layers form a silicon-insulator-silicon capacitor (also referred to as SISCAP) guide that provides efficient, high-speed optical modulation of an optical signal passing through the modulator. In one embodiment, at least one of the waveguides includes a respective ridge portion aligned at a charge modulation region which may aid in confining the optical mode laterally (e.g., in the width direction) in the optical modulator. In another embodiment, ridge portions may be formed on both the lower and the upper waveguides. These ridge portions may be aligned in a vertical direction (e.g., a thickness direction) so that ridges overlap which may further improve optical efficiency by centering an optical mode in the charge modulation region.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: March 24, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Donald Adams, Prakash B. Gothoskar, Vipulkumar Patel, Mark Webster
  • Patent number: 10591804
    Abstract: A plug-and-play fiber-coupled nonlinear optical quantum wave-converter, optimized for quantum communications, comprises a commercial periodically-poled, waveguide-based, nonlinear optical chip, coupled with a pair of substrate-guided holographic (SGH) wavelength division multiplexers (WDM) and a pair of SGH filters; it offers bidirectional difference frequency conversion (DFG) and sum frequency conversion (SFG) simultaneously in a single packaged device.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: March 17, 2020
    Assignee: Luminit LLC
    Inventors: Jun Ai, Fedor Dimov, Xiaowei Xia, Selim Shahriar, Russell Kurtz, Chris Griffo
  • Patent number: 10591678
    Abstract: An optical connector includes a first sub-assembly that is factory-installed to a first end of an optical fiber and a second sub-assembly that is field-installed to the first end of the optical fiber. The optical fiber and first sub-assembly can be routed through a structure (e.g., a building) prior to installation of the second sub-assembly. The second sub-assembly interlocks with the first sub-assembly to inhibit relative axial movement therebetween. Example first sub-assemblies include a ferrule, a hub, and a strain-relief sleeve that mount to an optical fiber. Example second sub-assemblies include a mounting block; and an outer connector housing forming a plug portion.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: March 17, 2020
    Assignee: CommScope Technologies LLC
    Inventors: Julian S. Mullaney, Eric Emmanuel Alston, William Alan Carrico
  • Patent number: 10578800
    Abstract: Various embodiments of a photonic integrated circuit (PIC) are described herein. A PIC, functioning as a coherent receiver, may include optical components such as an optical coupler, a directional coupler, a beam splitter, a polarizing beam rotator-splitter, a variable optical attenuator, a monitor photodiode, 90-degree hybrid mixer, and a waveguide photodiode. The PIC may also include electrical components such as an electrode, a capacitor, a resistor and a Zener diode.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: March 3, 2020
    Assignee: SIFOTONICS TECHNOLOGIES CO., LTD.
    Inventors: Tuo Shi, Tzung-I Su, Yongbo Shao, Dong Pan
  • Patent number: 10578801
    Abstract: A SOI bent taper structure is used as a mode convertor. By tuning the widths of the bent taper and the bend angles, almost lossless mode conversion is realized between TE0 and TE1 in a silicon waveguide. The simulated loss is <0.05 dB across C-band. This bent taper can be combined with bi-layer TM0-TE1 rotator to reach very high efficient TM0-TE0 polarization rotator. An ultra-compact (9 ?m) bi-layer TM0-TE1 taper based on particle swarm optimization is demonstrated. The entire TM0-TE0 rotator has a loss <0.25 dB and polarization extinction ratio >25 dB, worst-case across the C-band.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: March 3, 2020
    Assignee: Elenion Technologies, LLC
    Inventor: Yangjin Ma
  • Patent number: 10571678
    Abstract: According to one aspect, the invention concerns a device for transporting and controlling light pulses for lensless endo-microscopic imaging and comprises: a bundle of N monomode optical fibers (Fi) arranged in a given pattern, each monomode optical fiber being characterized by a relative group delay value (Ax) defined relative to the travel time of a pulse propagating in a reference monomode optical fiber (F0) of the bundle of fibers (40), an optical device for controlling group velocity (50) comprising a given number M of waveplates (Pj) characterized by a given delay (8tj); a first spatial light modulator (51) suitable for forming from an incident light beam a number N of elementary light beams (Bi) each of which is intended to enter into one of said optical fibers, each elementary beam being intended to pass into a given waveplate such that the sum of the delay introduced by said waveplate and the relative group delay of the optical fiber intended to receive said elementary light beam is minimal in abs
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: February 25, 2020
    Assignees: Centre National de la Recherche Scientifique, Université d' Aix-Marseille
    Inventors: Esben Andresen, Hervé Rigneault
  • Patent number: 10551570
    Abstract: A plug of a connector that performs optical transmission is provided with an optical connection unit. The optical connection unit includes a lens that is provided on a side surface of the optical connection unit and performs optical connection with a lens provided on an optical connection unit of a receptacle in a direction orthogonal to an inserting/removing direction of the plug, and a locating surface that is provided on the side surface of the optical connection unit and abuts on a locating surface of the receptacle to determine a position of the optical connection unit in a mating condition of the plug into the receptacle.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: February 4, 2020
    Assignee: YOKOWO CO., LTD.
    Inventors: Akihiro Yodogawa, Hideki Kamitsuna, Ryo Nagase
  • Patent number: 10545300
    Abstract: An optical WDM device on a substrate and a fabrication method are disclosed. The WDM device includes a broadband light source, multiple output optical receivers, and a silicon waveguide terminated with two end reflectors, and a number of sequentially arranged WDM splitters between the two end reflectors. Each of the WDM splitters has a front and rear reflectors. The first end reflector is broadband coated to input light into the waveguide. The front reflectors of the WDM splitters and the second end reflector are narrowband coated so each reflector only selects to reflect one of the wavelengths from the light source. The rear reflectors of the WDM splitters are anti-reflection coated in order to transmit the unselected light to the next stage WDM splitter. The first end reflector is aligned to the input source, the WDM splitters and the second end reflector each are sequentially aligned to the output receivers.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: January 28, 2020
    Assignee: ADOLITE INC.
    Inventors: Abraham Jou, Paul Mao-Jen Wu