With Optical Coupler Patents (Class 385/15)
  • Patent number: 11894877
    Abstract: The invention relates to a processing device (1) comprising: —an input interface (2) receiving photons having first quantum states, —an encoder (3) generating a photon having a first fixed quantum state from a received electrical signal, —a transformer (4) transforming the first quantum state of a photon into a second quantum state, —a decoder (5) transforming the second quantum state of a photon into an electrical signal, —an output interface (6) delivering photons which have second quantum states and are intended for transmission, —and a switch (7) comprising three inputs connected respectively to the outputs of the input interface (2), encoder (3) and transformer (4), and three outputs connected respectively to the inputs of the output interface (6), decoder (5) and transformer (4), said switch selectively coupling at least one of its inputs to one of its outputs, depending on a received command.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: February 6, 2024
    Assignee: VERIQLOUD
    Inventor: Marc Kaplan
  • Patent number: 11830279
    Abstract: The present disclosure provides a screen fingerprint component and a terminal device. The screen fingerprint component includes: a first glass cover plate, a display module, a strobe light, and a fingerprint module, where the first glass cover plate, the display module, and the fingerprint module are stacked, a first side of the display module is attached to a first surface of the first glass cover plate, the strobe light is located on one side of the first glass cover plate and adjacent to both the first surface of the first glass cover plate and the first side of the display module, and the strobe light faces the first glass cover plate.
    Type: Grant
    Filed: November 24, 2021
    Date of Patent: November 28, 2023
    Assignee: VIVO MOBILE COMMUNICATION CO., LTD.
    Inventor: Huaping Wu
  • Patent number: 11728119
    Abstract: A photocathode 4 includes an optically transparent conductive layer provided between a translucent substrate and a photoelectric conversion layer. The optically transparent conductive layer is formed of a constituent material including carbon. A Raman spectrum of the constituent material has a peak of a band, a peak of a band, a peak of a band, and a peak of a band.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: August 15, 2023
    Assignees: NATIONAL UNIVERSITY CORPORATION SHIZUOKA UNIVERSITY, HAMAMATSU PHOTONICS K.K.
    Inventors: Atsushi Nakamura, Yusuke Noda
  • Patent number: 11694000
    Abstract: A simulation method and simulator for a system including a plurality of microring resonators, where the simulation method includes converting the plurality of microring resonators into an equivalent model, generating a virtual system including the equivalent model, inputting an input signal to the virtual system, and outputting an output signal from the virtual system.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: July 4, 2023
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Tae Hee Han, Yong Wook Kim, Jeong Beom Hong, Min Su Kim
  • Patent number: 11662436
    Abstract: A movable device includes a light deflector including a movable part rotatable about a predetermined axis; a mount including a pair of stationary parts to which the light deflector is secured; and a substrate attached to an opposite side of a light-deflector side of the mount. The substrate has a through hole between the pair of the stationary parts.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: May 30, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventor: Junichi Konishi
  • Patent number: 11644618
    Abstract: An integrated photonics device that emits light out towards a measured sample value is disclosed. The device can include a discrete optical unit that attaches to a supporting layer. The discrete optical unit can include mirror(s), optics, detector array(s), and traces. The supporting layer can include one or more cavities having facet walls. Light emitter(s) can emit light that propagate through waveguide(s). The emitted light can exit the waveguide(s) (via termination point(s)), enter the one or more cavities at the facet walls, and be received by receiving facets of the discrete optical unit. The mirror(s) of the discrete optical unit can redirect the received light towards collimating optics, which can direct the light out of the device through the system interface. The discrete optical unit can be formed separately from the supporting layer or bonded to the supporting layer after the mirror, optics, detector arrays, and traces are formed.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: May 9, 2023
    Inventors: Michael J. Bishop, Vijay M. Iyer, Lexie Nicole Schachne, Jason Pelc
  • Patent number: 11602805
    Abstract: A decoating method for the edge decoating of glass sheets, the glass sheets having at least on one of their two glass surfaces a protective coating in the form of a peel-off protective film or in the form of a polymer protective layer that cannot be peeled off, and preferably having a functional coating situated under the protective coating, the protective film being partially mechanically removed, in particular ground away, for the edge decoating, in the form of at least one film strip, laser traces being introduced into the protective film before the mechanical removal of the film strip, and the laser traces being introduced in such a way that the film strip is removed in the form of individual film strip partial pieces separated from one another by the laser traces; or the polymer protective layer being removed using laser radiation.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: March 14, 2023
    Assignee: HEGLA boraident GmbH & Co. KG
    Inventors: Bernhard Hötger, Thomas Rainer
  • Patent number: 11575245
    Abstract: A thin-film device for a wavelength-tunable semiconductor laser. The device includes a cavity between a high-reflectivity facet and an anti-reflection facet designed to emit a laser light of a wavelength in a tunable range determined by two Vernier-ring resonators with a joint-free-spectral-range between a first wavelength and a second wavelength. The device further includes a film including multiple pairs of a first layer and a second layer sequentially stacking to an outer side of the high-reflectivity facet. Each layer in each pair has one unit of respective optical thickness except one first or second layer in one pair having a larger optical thickness. The film is configured to produce inner reflectivity of the laser light from the high-reflectivity facet at least >90% for wavelengths in the tunable range starting from the first wavelength but at least <50% for wavelengths in a 25 nm range around the second wavelength.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: February 7, 2023
    Assignee: Marvell Asia Pte Ltd.
    Inventors: Xiaoguang He, Radhakrishnan L. Nagarajan, Brian Taylor
  • Patent number: 11573259
    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: March 16, 2022
    Date of Patent: February 7, 2023
    Assignee: Rigetti & Co, LLC
    Inventors: William J. Zeng, Eyob A. Sete, Chad Tyler Rigetti
  • Patent number: 11474296
    Abstract: A fiber mode sorter includes an optical fiber including a waveguide structure configured to maintain an orbital angular momentum (OAM) of a beam propagating through the optical fiber, and an OAM mode sorter placed on a core of the optical fiber.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: October 18, 2022
    Assignee: Soreq Nuclear Research Center
    Inventors: Shiomi Lightman, Gilad Hurvitz, Razi Gvishi, Ady Arie
  • Patent number: 11444695
    Abstract: Optical communication system communicates between an array of originating tiles and an array of terminating tiles. Each array is associated with a lenslet array, such as a two-layer array which has two layers of lenslets. Each originating tile has an array of transmitters and each terminating tile has an array of receivers. Each tile is associated with a common lenslet or lenslet pair. A beamlet from a representative transmitter passes through the lenslet pair adjacent to its tile to become a collimated beam whose angle is related to the location of the transmitter. The collimated beam passes through the receiver lenslet pair adjacent to the tile containing the receiver associated with the representative transmitter, and is focused onto that receiver by that lenslet pair. The system may operate in the reverse direction, wherein the transmitters are transmitter-receivers, the receivers are receiver-transmitters, and a beam from a receiver-transmitter is directed to its corresponding transmitter-receiver.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: September 13, 2022
    Assignee: Fathom Radiant, PBC
    Inventors: Dane R. Austin, William Andregg, Erik C. Nelson, Robert T. Weverka
  • Patent number: 11391666
    Abstract: A snapshot ellipsometer or polarimeter which does not require temporally modulated element(s) to measure a sample, but instead uses one or more spatially varying compensators, (eg. microretarder arrays and compound prisms), to vary the polarization state within a measurement beam of electromagnetic radiation. Analysis of an intensity profile of the beam after interaction with the spatially varying compensator(s) and the sample, and after having source beam wavelength content determined using a digital light processor, and/or being directed by a digital light processor elements toward elements in the detector, allows sample parameters to be characterized.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: July 19, 2022
    Assignee: J.A. WOOLLAM CO., INC.
    Inventors: Griffin A. P. Hovorka, Jeremy A. Van Derslice, Martin M. Liphardt
  • Patent number: 11381307
    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: December 14, 2020
    Date of Patent: July 5, 2022
    Assignee: OPTIPULSE INC.
    Inventor: John Richard Joseph
  • Patent number: 11353661
    Abstract: A device includes a module comprising an arrayed waveguide grating (AWG), and a filter having a filter input port, a filter output port, and a filter COMM output port. The filter is operable such that a first range of wavelengths entering the filter at the filter input port is directed to the filter output port and a second range of wavelengths entering the filter at the filter input port is directed to the COMM output port. The AWG includes an AWG input port optically coupled to the filter output port to receive the first range of wavelengths, and a plurality of AWG output ports.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: June 7, 2022
    Assignee: Nexus Photonics LLC
    Inventor: Tin Komljenovic
  • Patent number: 11356756
    Abstract: A secure tiered, robust, and deterministic converged communications architecture with the capacity to support a plurality of power distribution automation devices/components with fiber-enabled fail-over protection is described.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: June 7, 2022
    Assignee: Commonwealth Edison Company
    Inventors: Andrew Dickson, Michael Kuberski, Steven Offner
  • Patent number: 11307242
    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: October 8, 2020
    Date of Patent: April 19, 2022
    Assignee: Rigetti & Co, LLC
    Inventors: William J. Zeng, Eyob A. Sete, Chad Tyler Rigetti
  • Patent number: 11256030
    Abstract: Structures for an optical power splitter and methods of forming a structure for an optical power splitter. A first waveguide core provides an input port, and second and third waveguide cores provide respective output ports. A non-linear waveguide taper is coupled to the first waveguide core at a first interface and is coupled to the second and third waveguide cores at a second interface. The non-linear waveguide taper includes a first curved section having a first width dimension that increases with increasing longitudinal distance from the first interface. The non-linear waveguide taper includes a second curved section having a second width dimension that increases with increasing longitudinal distance from the second interface. The first and second curved sections join at a longitudinal location at which the first and second width dimensions are each equal to a maximum width of the non-linear waveguide taper.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: February 22, 2022
    Assignees: GlobalFoundries U.S. Inc., Khalifa University of Science and Technology
    Inventors: Sujith Chandran, Yusheng Bian, Jaime Viegas, Ajey Poovannummoottil Jacob
  • Patent number: 11249261
    Abstract: The present invention includes a substrate, an optical waveguide on the substrate, a light source configured to provide light into the optical waveguide, and a prism between the light source and the optical waveguide. The light source includes a lens.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: February 15, 2022
    Assignee: OPROCESSOR INC
    Inventors: Sahnggi Park, Kyungeun Kim
  • Patent number: 11249317
    Abstract: A device for collimating a light radiation field of a light source (L) having a beam characteristic which is different in a first plane (FAC) from that of a second plane (SAC). The device comprises at least one first collimating lens (10) and a second collimating lens (20). The device has an additional optical element (30) in order to collimate the light radiation field in different planes to the first and to the second plane.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: February 15, 2022
    Assignee: FISBA AG
    Inventors: Hansruedi Moser, Hans Forrer, Martin Forrer, Michael Huber
  • Patent number: 11237333
    Abstract: A ring resonator device includes a passive optical cavity having a circuitous configuration into which is built a photodetector device. The photodetector device includes a first implant region formed within the passive optical cavity that includes a first type of implanted doping material. The photodetector device includes a second implant region formed within the passive optical cavity that includes a second type of implanted doping material, where the second type of implanted doping material is different than the first type of implanted doping material. The photodetector device includes an intrinsic absorption region present within the passive optical cavity between the first implant region and the second implant region. A first electrical contact is electrically connected to the first implant region and to a detecting circuit. A second electrical contact is electrically connected to the second implant region and to the detecting circuit.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: February 1, 2022
    Assignee: Ayar Labs, Inc.
    Inventors: Pavan Bhargava, John Fini, Derek Van Orden, Chen Sun, Mark Wade
  • 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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