With Optical Coupler Patents (Class 385/15)
  • Patent number: 11106005
    Abstract: A prism rotation adjustment mechanism, a photolithographic exposure system and a photolithography tool are disclosed. The prism rotation adjustment mechanism includes a frame (200), a flexible mechanism (100) and an actuation mechanism. The flexible mechanism (100) includes a fixing component (110), an actuating component (120), a connecting component (130) and a swinging component (140) that are flexibly articulated in a sequence. The fixing component (110) is fixed to the frame (200). The actuation mechanism is fixed to the frame (200) and coupled to the actuating component (120). On the swinging component (140) are secured a prism wherein an axis of articulation between the swinging component (140) and the fixing component (110) is in correspondence with a rotational center of the prism.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: August 31, 2021
    Assignee: SHANGHAI MICRO ELECTRONICS EQUIPMENT (GROUP) CO., LTD.
    Inventor: Tongke Su
  • Patent number: 11083401
    Abstract: Systems and methods for measuring brain activity of a subject are disclosed, comprising: positioning a plurality of electric field sensors at multiple positions on the exterior of a skull of the subject; measuring one to three components of a plurality of instantaneous electric field vectors generated by a plurality of electric field sources, the electric field vectors being measured by the plurality of electric field sensors; and determining brain activity of the subject based on the measurement of the plurality of instantaneous electric field vectors.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: August 10, 2021
    Assignee: Northeastern University
    Inventors: Srinivas Sridhar, Yury Petrov, Ozgur Yavuzcetin
  • Patent number: 11054575
    Abstract: The present invention implements an optical spectral shaper that is compact even if a number of input/output ports increases.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: July 6, 2021
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Mitsumasa Nakajima, Kazunori Senoo, Kenya Suzuki, Toshikazu Hashimoto
  • Patent number: 11003045
    Abstract: Aspects of the present disclosure describe optical phased array structures and devices in which hyperbolic phase envelopes are employed to create focusing and diverging emissions in one and two dimensions. Tuning the phase fronts moves focal point spot in depth and across the array. Grating emitters are also used to emit light upward (out of plane). Adjusting the period of the gratings along the light propagation direction results in focusing the light emitted from the gratings. Changes in the operating wavelengths employed moves the focal spot along the emitters.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: May 11, 2021
    Assignee: Analog Photonics LLC
    Inventors: Ehsan Hosseini, Michael Watts
  • Patent number: 10996407
    Abstract: An excitation light irradiation device includes a substrate having a color center. The color center is excited by an excitation light incident to the substrate. The substrate includes first and second reflection surfaces facing each other, and first and second end surfaces facing each other. When the excitation light enters into the substrate, the incident excitation light travels from the first end surface to the second end surfaces while repeatedly reflecting between the first and second reflection surfaces. The second end surface is inclined. The second end surface reflects the incident excitation light so as to cause the incident excitation light to be emitted from one of the first and second reflection surfaces.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: May 4, 2021
    Inventors: Masateru Hashimoto, Yoshiharu Yoshii
  • Patent number: 10999659
    Abstract: An optical network device receives an optical signal, to which polarization information is added, from a transmitter via a transmission line. The receiver generates electric-field-information signal of the optical signal. The processor acquires, for respective polarization rotation amounts, the electric-field-information signal during a period specified by the polarization information. The processor calculates, for respective polarization rotation amounts and based on the electric-field-information signal, evaluation values corresponding to powers of the optical signal at a plurality of positions on the transmission line. The processor calculates, for respective positions, variations in the evaluation values corresponding to the polarization rotation amounts.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: May 4, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Kazuyuki Tajima, Takahito Tanimura, Setsuo Yoshida, Takeshi Hoshida
  • Patent number: 10948678
    Abstract: Bi-directional data center architectures employing a jacketless trunk cable are disclosed. The bi-directional data center architecture includes first and second coupling panels respectively having first adapters and second adapters. The architecture also includes a plurality of sub-racks having sub-rack adapters, and a jacketless trunk cable that includes a plurality of sub-unit sections, with each sub-unit section carrying one or more optical fibers. The plurality of sub-unit sections are configured to optically connect corresponding first and second adapters of the first and second coupling panels to the sub-rack adapters such that every optical fiber in each sub-unit section is used to establish an optical connection.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: March 16, 2021
    Assignee: Corning Optical Communications LLC
    Inventors: Terry Lee Cooke, Christopher Shawn Houser, Hanna Marciniak, Brian Keith Rhoney
  • Patent number: 10935727
    Abstract: A variable wavelength filter includes: an input optical fiber; a diffraction grating that disperses input light from the input optical fiber; a variable mirror that has a reflective surface, wherein an angle of the reflective surface is adjustable, the variable mirror reflects the input light dispersed by the diffraction grating, the input light reflected by the variable mirror passes through a normal optical path, the input light that passes through the normal optical path has a wavelength band defined based on the angle of the reflective surface, and the defined wavelength band has a center wavelength corresponding to the angle of the reflective surface; an output optical fiber that outputs a portion of the input light that has passed through the normal optical path; and an optical detector disposed on a propagation path of the input light from the input optical fiber to the output optical fiber.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: March 2, 2021
    Assignee: Santec Corporation
    Inventor: Yasuki Sakurai
  • Patent number: 10928589
    Abstract: To reduce or eliminate crosstalk between adjacent integrated optical waveguides, an embodiment of an integrated structure includes, between the optical waveguides, a metal isolation region configured to redirect a signal leaking from one waveguide away from the other waveguide, to absorb the leaking signal, or both to redirect and absorb respective portions of the leaking signal. For example, such an integrated structure includes a cladding, first and second optical cores, and a metal isolation region. The optical cores are disposed in the cladding, and the isolation region is disposed in the cladding between, and separate from, the cores. Including a metal isolation region between adjacent optical waveguides can reduce crosstalk between the waveguides more than coating the waveguides with a metal because the metal coating typically is not thick enough to redirect or absorb enough of a leakage signal to reduce crosstalk to a suitable level.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: February 23, 2021
    Assignee: Honeywell International Inc.
    Inventor: Matthew Wade Puckett
  • Patent number: 10923880
    Abstract: A semiconductor laser device is a vernier-type wavelength-tunable semiconductor laser device including an optical resonator, constituted by first and second reflective elements having reflection comb spectra in which reflection peaks are arranged on a wavelength axis in a substantially periodic manner and having mutually different periods. At least one of the first and second reflective elements has a sampled grating structure having a reflection comb spectrum in which reflection phases at the respective reflection peaks are aligned and the intensity of a reflection peak outside a set laser emission wavelength bandwidth is lower than the intensity of a reflection peak within the laser emission wavelength bandwidth.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: February 16, 2021
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Kazuaki Kiyota, Yasumasa Kawakita
  • Patent number: 10914891
    Abstract: A multichannel optical coupler can include an output optical coupler array and a plurality of optical fibers. At least two of the plurality of optical fibers can be connected together at an end opposite the output optical coupler array.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: February 9, 2021
    Assignee: Chiral Photonics, Inc.
    Inventor: Victor Il'ich Kopp
  • Patent number: 10917707
    Abstract: A network (100) for a data center is disclosed. The network comprises computing resources (120), storage resources (110), and a switching apparatus (130). The switching apparatus (130) comprises a plurality of electrical switching components (140) configured to provide packet switching for traffic between computing resources or between computing and storage resources, and an optical switching fabric (150) configured to select an electrical switching component to provide packet switching between computing resources (120) and to provide connectivity between the plurality of electrical switching components (140) and the computing and storage resources (120, 110). Also disclosed is a method (400) for configuring a Virtual Performance Optimised Data Center (vPOD) in a network.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: February 9, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Francesco Testa, Alberto Bianchi, Filippo Ponzini
  • Patent number: 10908372
    Abstract: Embodiments described herein improve the performance of active sensing systems, such as LiDAR systems, and enable detection of objects closer to the system's sensor. Illustrative embodiments enable spatial separation of the excitation and return signal on a photonic integrated chip (“PIC”) such that separate waveguides can be used for the excitation and return signals, enabling isolation of the system's detectors from the excitation source without the use of a splitter or circulator. For example, preferred embodiments avoid loss due to the use of splitters and the need for gating the detector, and are desirably compatible with chip-scale systems. Moreover, illustrative embodiments enable keeping the excitation and detection paths on the same PIC (e.g. in an interleaved configuration), which helps keep the system more compact and avoid issues introduced by parallax.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: February 2, 2021
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Michael G. Moebius, Steven J. Spector
  • Patent number: 10884187
    Abstract: A method is provided for producing, on a wafer-scale, a plurality of optoelectronic chips, including: providing a receiver substrate including a plurality of elementary zones, each being configured to contain one optoelectronic chip, and each including at least one coupling waveguide integrated into the receiver substrate and configured to be optically coupled to a first optoelectronic component; transferring a plurality of pads to the elementary zones such that the pads partially cover the at least one coupling waveguide; and producing the first optoelectronic component from the pads such that each first optoelectronic component is facing the at least one coupling waveguide of a corresponding elementary zone, and, following the transferring step, each pad of the plurality of pads extends over a set of at least two adjacent elementary zones, so as to partially cover the at least one coupling waveguide of each of the adjacent elementary zones.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: January 5, 2021
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Sylvie Menezo, Frank Fournel
  • Patent number: 10868614
    Abstract: An optical node includes one or more Optical Add/Drop Multiplexer (OADM) devices which each form a respective degree connected to an associated Optical Multiplex Section (OMS) section of a cascaded optical network including a plurality of OMS sections; and a channel holder source connected to the OADM devices, wherein the OADM device is configured to detect a local fault affecting one or more traffic signals and switch to the channel holder source to provide a respective channel holder the one or more traffic signals with a same power level and spectral location such that the respective channel holder replaces a respective traffic signal at the OADM device which is a first switching port after the fault and such that all other OADM devices at other optical nodes downstream from the fault remain switched to the one or more traffic signals due to a presence of the provided respective channel holder.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: December 15, 2020
    Assignee: Ciena Corporation
    Inventors: Choudhury A. Al Sayeed, David C. Bownass, David W. Boertjes, Scott Kohlert
  • Patent number: 10868616
    Abstract: Techniques are disclosed for aligning an optical transmitter with an optical receiver for a line-of-sight communications link, wherein the optical transmitter comprises a laser array emitter, the laser array emitter comprising a plurality of laser emitting regions, wherein each of a plurality of the laser emitting regions is configured to emit laser light in a different direction such that the laser array emitter is capable of emitting laser light in a plurality of different directions. The system can run produce emissions from different laser emitting regions until a laser emitting region that is in alignment with the optical receiver is found. This aligned laser emitting region can then be selected for use to optically communicate data from the optical transmitter to the optical receiver.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: December 15, 2020
    Assignee: OPTIPULSE INC.
    Inventor: John Richard Joseph
  • Patent number: 10859739
    Abstract: Described herein is a diffraction grating (1) for use in an optical system. The diffraction grating includes a substrate (2) and an array of elongate diffracting elements (3) arranged in a grating profile across the substrate. The grating profile imparts a predefined phase change to optical beams to at least partially correct the beams for optical aberrations present in the optical system.
    Type: Grant
    Filed: June 2, 2019
    Date of Patent: December 8, 2020
    Assignee: II-VI Delaware, Inc.
    Inventors: Luke Stewart, Glenn Wayne Baxter, Steven James Frisken
  • Patent number: 10852346
    Abstract: In a general aspect, a quantum error-correction technique includes applying a first set of two-qubit gates to qubits in a lattice cell, and applying a second, different set of two-qubit gates to the qubits in the lattice cell. The qubits in the lattice cell include data qubits and ancilla qubits, and the ancilla qubits reside between respective nearest-neighbor pairs of the data qubits. After the first and second sets of two-qubit gates have been applied, measurement outcomes of the ancilla qubits are obtained, and the parity of the measurement outcomes is determined.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: December 1, 2020
    Assignee: Rigetti & Co, Inc.
    Inventors: William J. Zeng, Eyob A. Sete, Chad Tyler Rigetti
  • Patent number: 10845231
    Abstract: Systems and methods that use a differential spectral liquid level sensor to measure the level of liquid in a reservoir (e.g., a fuel tank or other storage container). The use of a differential spectral liquid level sensor solves the problem of common-mode intensity variations (i.e., intensity variations not due to the level of the liquid) by having two different wavelengths propagate through the same optical path but have different spectral attenuations in the liquid. By determining the ratio of the received optical powers, common-mode intensity variations can be neutralized, thereby enhancing the accuracy of the received power reading and the resulting liquid level indication.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: November 24, 2020
    Assignee: The Boeing Company
    Inventors: Tuong K. Truong, Eric Y. Chan, Dennis G. Koshinz, Kim Quan Anh Nguyen, Eric J. Harvey
  • Patent number: 10838130
    Abstract: A molded component assembly includes a printed circuit board with a first face and a second face, and multiple through apertures. Multiple light emitting diodes are mounted on a first portion of the first face. A light guide of a light translucent polymeric material is positioned proximate to the light emitting diodes. The light guide includes: a contact surface directly contacting the first portion of the first face; multiple light outlets, each aligned to receive visible light emitted from one of the light emitting diodes; and multiple integrally formed light reflectors. Each light reflector extends into one of the light outlets and over one of the through apertures, and each includes a first reflector surface, a second reflector surface and a third reflector surface each oriented non-orthogonal to the contact surface to reflect light from one of the light emitting diodes into one of the light outlets.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: November 17, 2020
    Inventors: Ron Gipson, Bhanumurthy Veeragandham
  • Patent number: 10838149
    Abstract: A dual-core waveguide architecture provides two evanescently coupled waveguides where a first waveguide is doped with an active gain species to produce optical power and a second waveguide that runs parallel to the first waveguide is configured to collect the power produced by the first waveguide. Power is harvested from the second waveguide.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: November 17, 2020
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Derrek R. Drachenberg, Paul H. Pax
  • Patent number: 10826622
    Abstract: A wavelength de-multiplexing system that receives a wavelength multiplexed signal and generates electrical signals corresponding to the optical signals is disclosed. The optical receiver module includes a lens, a lens unit, and an optical de-multiplexer (O-DeMux). The lens converts the wavelength multiplexed signal into a quasi-collimated beam. The lens unit narrows a diameter of the quasi-collimated beam. The O-DeMux de-multiplexes the narrowed quasi-collimated beam coming from the lens unit by wavelength selective filters (WSFs) each having optical distances from the lens unit different from each other.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: November 3, 2020
    Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Electric Device Innovations, Inc.
    Inventors: Kazuaki Mii, Hiroshi Hara, Fumihiro Nakajima
  • Patent number: 10795088
    Abstract: In the examples provided herein, a system has a first racetrack resonant waveguide structure, positioned to enable an input light signal to couple from a first waveguide; and a second racetrack resonant waveguide structure, positioned to enable the input light signal to couple between the first racetrack resonant waveguide structure and the second racetrack resonant waveguide structure, and further positioned to enable an output light signal to couple from the second racetrack resonant waveguide structure to a second waveguide. The system also has a primary heating unit, positioned to heat a primary region including a first portion of the first racetrack resonant waveguide structure and a first portion of the second racetrack resonant waveguide structure, to change a central frequency and a passband width for the system.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: October 6, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Mir Ashkan Seyedi, Chin-Hui Chen
  • Patent number: 10707970
    Abstract: A wavelength de-multiplexing system that receives a wavelength multiplexed signal and generates electrical signals corresponding to the optical signals is disclosed. The optical receiver module includes a lens, a lens unit, and an optical de-multiplexer (O-DeMux). The lens converts the wavelength multiplexed signal into a quasi-collimated beam. The lens unit narrows a diameter of the quasi-collimated beam. The O-DeMux de-multiplexes the narrowed quasi-collimated beam coming from the lens unit by wavelength selective filters (WSFs) each having optical distances from the lens unit different from each other.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: July 7, 2020
    Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Electric Device Innovations, Inc.
    Inventors: Kazuaki Mii, Hiroshi Hara, Fumihiro Nakajima
  • Patent number: 10678072
    Abstract: A method is provided. The method comprises: injecting an optical carrier signal into an unbent optical waveguide between two reflectors, where the distance between two reflectors in the center of the two reflectors is substantially zero and the two reflectors undergo substantially a ? phase shift where the two reflectors are adjacent; creating standing waves between the two reflectors in the center, and a single resonance due to constructive interference; applying a varying electric field across the unbent optical waveguide centered between two reflectors and extending a length less than or equal to a combined length of the two reflectors; and generating a modulated carrier signal at at least one of an input and an output of the unbent optical waveguide between the two reflectors.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: June 9, 2020
    Assignee: Honeywell International Inc.
    Inventors: Matthew Wade Puckett, Neil Krueger
  • Patent number: 10670809
    Abstract: An optical transmission device controls driving of a mirror that adjusts an attenuation amount of a VOA and a transmission frequency of a TOF. The device acquires an adjustment amount of a reference voltage in which the intensity of output light becomes a target at detecting a change in the attenuation amount. The device calculates a deviation of an attenuation amount by using a difference between the reference frequency and the adjusted frequency specified from the characteristic of the mirror. The device calculates a deviation of an attenuation amount from a relationship at detecting a change in a new attenuation amount. The device calculates an adjustment amount by using a difference between the voltage of the reference frequency specified from the characteristic and the voltage of the frequency that is after deviation, adds the adjustment amount to the reference voltage, and sets the result.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: June 2, 2020
    Assignee: FUJITSU OPTICAL COMPONENTS LIMITED
    Inventor: Shuichi Yasuda
  • Patent number: 10663511
    Abstract: A substrate mounting table, which is used for an electrical characteristics inspection of a semiconductor device formed on a substrate, includes a plurality of layers partitioned in a direction perpendicular to a mounting surface on which the substrate is mounted, wherein coolant paths are formed on at least two layers among the plurality of layers, each of the coolant paths having an inlet port and an outlet port located in a circumferential portion of a corresponding one of the at least two layers.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: May 26, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventor: Dai Kobayashi
  • Patent number: 10656442
    Abstract: In an optical waveguide supplied with electricity by using a heater, miniaturization of the device is achieved by enhancing heat dissipation efficiency and heat resistance. In a modulator including an optical waveguide formed on an insulating film, a first interlayer insulating film that covers the optical waveguide, a heater formed on the first interlayer insulating film, and a second interlayer insulating film that covers the heater, a heat conducting portion adjacent to the optical waveguide and the heater and penetrating the first and second interlayer insulating films is formed.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: May 19, 2020
    Assignee: Renesas Electronics Corporation
    Inventors: Tetsuya Iida, Yasutaka Nakashiba, Shinichi Kuwabara
  • Patent number: 10656352
    Abstract: A micro-mirror array for optical coupling in a waveguide array including, a transparent body having a slanted portion, a sidewall portion, and a bottom portion, the sidewall portion and the bottom portion each respectively facing the slanted portion, and wherein a complementary shape of a conventional form off-axis mirror is arranged on the slanted portion, and a reflective coating on at least a portion of the complementary shape.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: May 19, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Jean Benoit Héroux, Masao Tokunari
  • Patent number: 10656014
    Abstract: The present disclosure describes broadband optical emission sources that include a stack of semiconductor layers, wherein each of the semiconductor layers is operable to emit light of a different respective wavelength; a light source operable to provide optical pumping for stimulated photon emission from the stack; wherein the semiconductor layers are disposed sequentially in the stack such that a first one of the semiconductor layers is closest to the light source and a last one of the semiconductor layers is furthest from the light source, and wherein each particular one of the semiconductor layers is at least partially transparent to the light generated by the other semiconductor layers that are closer to the light source than the particular semiconductor layer. The disclosure also describes various spectrometers that include a broadband optical emission device, and optionally include a tuneable wavelength filter operable to allow a selected wavelength or narrow range of wavelengths to pass through.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: May 19, 2020
    Assignee: ams Sensors Singapore Pte. Ltd.
    Inventors: Peter Riel, Peter Roentgen
  • Patent number: 10649146
    Abstract: An optical coupling device including, in sequence, a focusing lens and an optical coupling network, the coupling device being symmetric with respect to a plane, the focusing lens formed in a core layer, as a front face, perpendicular to the plane, the optical coupling network including a plurality of trenches, formed on the front face, and convex in shape, the optical coupling network including, in sequence, a first sub-network and a contiguous second sub-network, respectively delimited, by a first contour and a second contour, the first and second contours extending in a divergent manner and convergent manner respectively.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: May 12, 2020
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Karim Hassan, Salim Boutami
  • Patent number: 10649142
    Abstract: Systems and methods are disclosed for splicing crystal fibers to silica glass fibers. Embodiments of the present disclosure provide mechanically stable bonds with negligible optical transmission loss by splicing fibers through a thermally enhanced reaction bonding process at lower temperatures than the melting point of the crystal. In an embodiment, mixing of the materials at elevated temperatures forms a stable intermediary material which enhances strength and reduces the transmission losses.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: May 12, 2020
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Rajesh Thapa, Rafael R. Gattass, Daniel J. Gibson, Woohong Kim, L. Brandon Shaw, Jasbinder S. Sanghera
  • Patent number: 10645474
    Abstract: Described are various configurations of reduced crosstalk optical switches. Various embodiments can reduce or entirely eliminate crosstalk using a coupler that has a power-splitting ratio that compensates for amplitude imbalance caused by phase modulator attenuation. Some embodiments implement a plurality of phase modulators and couplers as part of a dilated switch network to increase overall bandwidth and further reduce potential for crosstalk.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: May 5, 2020
    Assignee: Juniper Networks, Inc.
    Inventor: Jonathan Edgar Roth
  • Patent number: 10634524
    Abstract: A system configured to a plurality of zones of an aircraft includes first and second connectors are in optical communication, an optical fiber, a first interrogator, and a controller. The optical fiber extends between the first and second connectors and includes a first timing fiber Bragg grating disposed in the optical fiber at a reference location of the optical fiber. The first interrogator is connected to the optical fiber and is configured to provide a first optical signal to the optical fiber and to receive a first timing signal from the optical fiber. The first timing fiber Bragg grating is configured to provide the first timing signal with information related to the first timing fiber Bragg grating from the first interrogator. The controller is operatively connected to the first interrogator and is configured to determine the reference location of the optical fiber.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: April 28, 2020
    Assignee: Kidde Technologies, Inc.
    Inventor: Mark Sherwood Miller
  • Patent number: 10620391
    Abstract: An optical connector includes a lens body including a lens portion, an optical conversion module, and a housing including an accommodation portion having a recessed portion, the optical conversion module combined with the lens body being fitted and assembled into the accommodation portion. The optical conversion module includes a light element disposed at a position facing the lens portion when combining the optical conversion module with the lens body. The housing includes a longitudinal support mechanism. The longitudinal support mechanism includes a reference surface and a pressing rib.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: April 14, 2020
    Assignee: YAZAKI CORPORATION
    Inventor: Tomohiro Hikosaka
  • Patent number: 10605921
    Abstract: A full-spectrum covering ultra wideband full-photonics based radar system comprising a signal transmitter, a transceiver module, and a signal receiver. The signal transmitter comprises a mode-locked laser, a first dispersion module, a first optical coupler, a second optical coupler, a first optical filter, a second dispersion module, a second optical filter, a first adjustable time delay module, a third optical coupler, an optical amplifier, and a first photodetector; the transceiver module comprises a band selector, a first electrical amplifier array, a T/R component array, an antenna array, and a second electrical amplifier array; the signal receiver comprises a third optical filter, a second adjustable time delay module, an electro-optical modulator, a third dispersion module, a second photodetector, an analog-digital conversion module, and a signal processing module.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: March 31, 2020
    Assignee: Shanghai Jiao Tong University
    Inventors: Weiwen Zou, Hao Zhang, Siteng Zhang, Jianping Chen
  • Patent number: 10587343
    Abstract: Provided is a signal loopback circuit which, in order to loop back a monitoring signal in a relay device for relaying optical signals of a plurality of wavelength bands, connects between a channel of first direction and a channel of second direction through which an optical signal of first wavelength band and an optical signal of second wavelength band are transmitted, wherein the signal loopback circuit is provided with a first coupler for branching the optical signal on the channel of first direction, a first filter for extracting at least one of a monitoring signal of first wavelength band and a monitoring signal of second wavelength band that are used in the channel of first direction from the optical signal branched by the first coupler, and a second coupler for causing the monitoring signal extracted by the first filter to be joined to the channel of the second direction.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: March 10, 2020
    Assignee: NEC CORPORATION
    Inventor: Satoshi Mikami
  • Patent number: 10585234
    Abstract: The present embodiment relates to a CC-MCF capable of generating sufficient mode coupling even with bending or twisting less. The CC-MCF includes two fiber parts having cores mutually directly or indirectly connected, each fiber part having a plurality of cores in which a pair of adjacent cores has a mode-coupling coefficient of 1 (1/m) or more. Each fiber part is provided with a transition section including a fiber end face and a stationary section adjacent to the transition section. In the stationary section, the MFD of each core is substantially constant in a fiber longitudinal direction, and in the transition section, the MFD of each core is continuously expanding from the stationary section to the fiber end face.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: March 10, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takemi Hasegawa, Tetsuya Hayashi, Yoshiaki Tamura
  • Patent number: 10578803
    Abstract: An optical demultiplexer/multiplexer, comprising: a multimode interference waveguide; at least one first coupling waveguide which meets the multimode interference waveguide at least one first location and a plurality of second coupling waveguides which meet the multimode interference waveguide at a plurality of second locations which are spaced in a direction of transmission in relation to the at least one first location, with the at least one first coupling waveguide and the second coupling waveguides together with the multimode interference waveguide providing a first angled multimode interferometer which operates to demultiplex a first optical signal having optical channels of a plurality of wavelengths or multiplex optical signals of a plurality of wavelengths into a first optical signal having optical channels of the plurality of wavelengths; at least one third coupling waveguide which meets the multimode interference waveguide at least one third location and a plurality of fourth coupling waveguides whi
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: March 3, 2020
    Assignee: University of Southampton
    Inventors: Youfang Hu, Graham Reed, David Thomson
  • Patent number: 10581551
    Abstract: In order to provide a compact and low power consumption optical repeater capable of amplifying a plurality of wavelength ranges, the optical repeater is provided with: an excitation means which generates excitation light in a single wavelength range; a first light amplification means which is excited by the excitation light and the amplification band of which is a first wavelength range; and a second light amplification means which is excited by the excitation light and the amplification band of which is a second wavelength range different from the first wavelength range.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: March 3, 2020
    Assignee: NEC CORPORATION
    Inventor: Satoshi Mikami
  • Patent number: 10578486
    Abstract: Spectrum sensors can be continuously calibrated in a manufacturing environment employing a continuously moving platform that carries the spectrum sensors in combination with spatially separated light spectra illuminating a region of the platform. A plurality of spectrum sensors, each including multiple sensor pixels, can be placed on the platform. The spatially separated light spectra can be illuminated over an area of the platform. The plurality of spectrum sensors can be moved with the platform through a region of the spatially separated light spectrum. Each sensor pixel for each of the plurality of spectrum sensors can be calibrated based on response of each spectral channel during passage through the spatially separated light spectra. The entire spectra from a light source can be employed simultaneously to calibrate multiple spectrum sensors in the manufacturing environment.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: March 3, 2020
    Assignee: NANOLAMBDA KOREA
    Inventor: Byung Il Choi
  • Patent number: 10564348
    Abstract: An optical coupler array can include an elongated optical element having a coupler housing structure and at least one longitudinal waveguide embedded in said housing structure. The housing structure can have an outer cross sectional shape comprising a first side comprising one or more curved portions and a second side comprising one or more flat portions. The second side can be disposed at a distance from the at least one longitudinal waveguide such that waveguiding properties are preserved and not disturbed.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: February 18, 2020
    Assignee: Chiral Photonics, Inc.
    Inventors: Victor Il'ich Kopp, Daniel Neugroschl
  • Patent number: 10551640
    Abstract: An apparatus comprising a polarization beam splitter optically coupled to a first light path and a second light path and configured to receive a CW light having a plurality of wavelengths, forward a first light beam of the CW light along the first light path, and forward a second light beam of the CW light along the second light path. A first multiplexer coupled to the first light path and configured to de-multiplex the first light beam into a first plurality of channels each corresponding to one of the plurality of wavelengths. A second multiplexer coupled to the second light path and configured to de-multiplex the second light beam into a second plurality of channels each corresponding to one of the plurality of wavelengths. A modulator coupled to the first multiplexer and the second multiplexer and configured to modulate the first plurality of channels and the second plurality of channels.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: February 4, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Yangjing Wen, Yan Cui, Xiao Shen, Yu Sheng Bai
  • Patent number: 10547462
    Abstract: A system and method for generating copies of a signal includes a first radiation source configured for providing a plurality of pump radiation beams, a second radiation source configured for providing a signal radiation beam, and a second-order nonlinear optical medium to receive the plurality of pump radiation beams from the first radiation source and the signal radiation beam from the second radiation source and to emit a plurality of idlers, where the plurality of idlers are low-noise copies of the signal.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: January 28, 2020
    Assignee: Perspecta Labs Inc.
    Inventors: Colin McKinstrie, Anjali Agarwal
  • Patent number: 10539755
    Abstract: There is provided a method for controlling an electronic device, the method comprising starting control of emission of laser light from at least one light-emitting part of a receptacle, wherein the at least one light-emitting part comprises an optical member and a lens associated with the optical member, the start of the control of the emission of the laser light is based on a flow of current from a partner side electronic device to at least two electrical contacts of the receptacle and detection of a connection of a cable to the receptacle, and the at least one light-emitting part emits the laser light to communicate with the partner side electronic device.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: January 21, 2020
    Assignee: SONY CORPORATION
    Inventors: Kazuyoshi Suzuki, Gen Ichimura, Hideyuki Suzuki, Kazuaki Toba, Masanari Yamamoto
  • Patent number: 10530126
    Abstract: Practical silicon-based light sources are still missing, despite the progress in germanium lasers, because both silicon and germanium are indirect-band semiconductors and inefficient at light generation. A tunable and single mode external cavity laser comprising: a gain medium for generating light between a reflective surface at one end of the gain medium; and a wavelength selective reflector at the other end of a laser cavity. A splitter disposed in the laser cavity includes an input port optically coupled to the gain medium, an input/output port optically coupled to the wavelength selective reflector, and an output port for outputting laser light at selected wavelengths. The wavelength selective reflector reflects light of one or more selected periodic wavelengths back to the gain medium via the input/output port, and passes light of non-selected wavelengths out of the laser cavity.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: January 7, 2020
    Assignee: Elenion Technologies, LLC
    Inventors: Yangjin Ma, Yang Liu, Ruizhi Shi, Thomas Wetteland Baehr-Jones, Saeed Fathololoumi
  • Patent number: 10524400
    Abstract: A component locating apparatus for alignment of components on opposite sides of a structural wall includes a source magnet and a clone magnet. The source magnet has a magnetic centroid positioned relative to a locating feature and is successively held against the first side of the structural wall at a plurality of spaced apart source positions. The clone magnet has a marking opening at a magnetic centroid and is magnetically held against the second side of the structural wall by an attractive magnetic force at clone positions corresponding to the source positions. The magnetic centroids are aligned by the attractive magnetic force and the marking opening allows an operator to mark the second side of the structural wall at the magnetic centroid of the clone magnet at each of the clone positions to mirror, on the second side, the source positions corresponding to the component locating template.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: December 31, 2019
    Assignee: THE BOEING COMPANY
    Inventors: Steve Duane Switzer, Brett Allen Hansen
  • Patent number: 10505629
    Abstract: An optical wireless communications receiver includes a set of photodetectors and signal processing circuitry that receive and process optical communications signals to generate receive data. The receiver includes a spatial light modulator (SLM) and associated SLM controller. The SLM receives an incident optical communications signals from remote optical transmitters and selectively directs the received optical communications signals to the photodetectors to realize an SLM pattern according to SLM control signals from the SLM controller. A system controller establishes the SLM pattern and communicates a description of it to the SLM controller for use in generating the SLM control signals. The receiver may be used in a variety of applications, including so-called visible-light communications or VLC, in which data is transmitted over an optical link using light in the visible spectrum.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: December 10, 2019
    Assignee: Trustees of Boston University
    Inventors: Thomas DC Little, Jimmy Chau
  • Patent number: 10481410
    Abstract: A reflecting module for optical image stabilization (OIS) includes: a housing; a moving holder supported in the housing by an elastic member; a reflecting member provided on the moving holder; and a driving part configured to provide driving force to the moving holder, wherein the driving part includes: two magnets having a shorter length in a first axial direction than in a second axial direction perpendicular to the first axial direction and disposed on the moving holder to be spaced apart from each other in the first axial direction; and four or more coils disposed on the housing, the four or more coils being disposed as two sets, respectively including a first set of two or more coils aligned in the second axial direction and spaced apart from each other in the first axial direction to face the two magnets, respectively.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: November 19, 2019
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jae Kyung Kim, Bong Won Jeong, Young Bok Yoon
  • Patent number: 10459178
    Abstract: This optical receptacle is provided with: a first optical surface; a second optical surface; a first recess; a second recess; an inclined surface; insertion holes; through holes; and reference parts. The second optical surface and the inclined surface face each other at inside surfaces of the first recess. The inclined surface is inclined so as to extend away from the second optical surface as the inclined surface approaches an opening of the first recess. First openings which are open at the inclined surface and second openings which are open at an inside surface of the second recess are provided at both ends of the linear insertion holes. The thorough holes face the second openings on the central axes of the insertion holes. The reference parts are provided to the surface at the side at which the first recess and the second recess are open.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: October 29, 2019
    Assignee: Enplas Corporation
    Inventor: Ayano Kon