Grating Patents (Class 385/37)
  • Patent number: 9664869
    Abstract: In various embodiments, an optical fiber module including an optical fiber having a first end, a second end, and a twisted portion between the first and second ends to enable the optical fiber to provide two orthogonal transverse bending degrees of freedom. The twisted portion induces an optical distortion. The module further includes a distortion compensation arrangement that is configured to at least partially compensate for the optical distortion and a housing that is configured to house at least a portion of the optical fiber including the twisted portion.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: May 30, 2017
    Assignee: RAYTHEON COMPANY
    Inventors: Ray E. McVey, David A. Rockwell
  • Patent number: 9645335
    Abstract: A non-intrusive monitoring optical connection apparatus includes first and second fiber optic communication lines (2, 8) arranged for light to pass therebetween. The first and second fiber optic communication lines (2, 8) have first and second ferrules (4, 6) at ends thereof, respectively. An optical element (13, 25) is disposed between the fiber optic communication lines (2, 8). Most of the light passes between the fiber optic communication lines (2, 8) and a small part of the light is harvested by the optical element (13, 25) and detected by a photo detector (15, 28).
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: May 9, 2017
    Assignee: Rax Connect Ltd.
    Inventor: Benny Gaber
  • Patent number: 9645320
    Abstract: A coupler and a waveguide chip including the coupler are provided. The coupler connects a first optical waveguide to a second optical waveguide and includes an entity region and a first waveguide grating. A first end of the entity region is coupled to the first optical waveguide. A second end of the entity region is coupled to a second end of the first waveguide grating. A first end of the first waveguide grating is coupled to the second optical waveguide. Size of the first end of the entity region matches size of an end plane of the first optical waveguide, size of an end plane of the second end of the entity region matches size of an end plane of the second end of the first waveguide grating, and size of the first end of the first waveguide grating matches size of an end plane of the second waveguide.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: May 9, 2017
    Assignees: HISENSE BROADBAND MULTIMEDIA TECHNOLOGIES CO., LTD., HISENSE USA CORP., HISENSE INTERNATIONAL CO., LTD.
    Inventor: Hua Zhang
  • Patent number: 9638864
    Abstract: An optical device including a diffraction grating structure. The device provides optical coupling that allows the diffraction efficiency and the coupling efficiency of signal light whose direction to travel is changed (or diffracted) by a grating to be independently determined. The optical device includes: a first layer forming one end of an optical waveguide; and a second layer disposed on the first layer and having a lower refractive index than the first layer. According to one embodiment, the second layer includes a diffraction grating structure that diffracts light that has entered the second layer from the first layer and outputs the light from the second layer to the first layer. In another embodiment, a third layer disposed on the second layer and includes the diffraction grating structure.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: May 2, 2017
    Assignee: GLOBALFOUNDRIES INC.
    Inventor: Yoichi Taira
  • Patent number: 9626024
    Abstract: Describe herein are electronic devices that includes a display stack having a composite cover component atop a display component. In some instances, the composite cover component includes a top layer and a bottom layer formed from an inorganic material and at least one inner layer formed from an organic material. In other instances, the composite cover component includes a top layer and a bottom layer formed from an organic material and at least one inner layer formed from an inorganic material.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: April 18, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: Hung-Bing Tan, David Eric Peters, Shan Cheng, Shankar Ganapathysubramanian
  • Patent number: 9583913
    Abstract: In the prior art, tunable lasers utilizing silicon-based tunable ring filters and III-V semiconductor-based gain regions required the heterogeneous integration of independently formed silicon and III-V semiconductor based optical elements, resulting in large optical devices requiring a complex manufacturing process (e.g., airtight packaging to couple the devices formed on different substrates, precise alignment for the elements, etc.). Embodiments of the invention eliminate the need for bulk optical elements and hermetic packaging, via the use of hybridized III-V/silicon gain regions and silicon optical components, such as silicon wavelength filters and stabilized wavelength references, thereby reducing the size and manufacturing complexity of tunable lasing devices.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: February 28, 2017
    Assignee: Aurrion, Inc.
    Inventors: Alexander W. Fang, Gregory Alan Fish, John Hutchinson
  • Patent number: 9575253
    Abstract: Methods and systems for grating couplers incorporating perturbed waveguides are disclosed and may include in a semiconductor photonics die, communicating optical signals into and/or out of the die utilizing a grating coupler on the die, where the grating coupler comprises perturbed waveguides. The perturbed waveguides may include rows of continuous waveguides with non-discrete scatterers extending throughout a length of said perturbed waveguides a variable width along their length. The grating coupler may comprise a single polarization grating coupler comprising perturbed waveguides and a non-perturbed grating. The grating coupler may comprise a polarization splitting grating coupler (PSGC) that includes two sets of perturbed waveguides at a non-zero angle, or a plurality of non-linear rows of discrete shapes. The PSGC may comprise discrete scatterers at an intersection of the sets of perturbed waveguides. The grating coupler may comprise individual scatterers between the perturbed waveguides.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: February 21, 2017
    Assignee: Luxtera, Inc.
    Inventors: Lieven Verslegers, Attila Mekis
  • Patent number: 9529128
    Abstract: A system includes a non-uniform grating having a first region with a first refractive index and second regions with a second refractive index. A pattern of the second regions varies with an angular coordinate such that phase shifts of an incident beam created by the grating cause destructive interference that creates an intensity minimum within an output beam from the grating.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: December 27, 2016
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Charles M. Santori, David A. Fattal
  • Patent number: 9525490
    Abstract: Embodiments of the invention describe apparatuses, optical systems, and methods for utilizing a dynamically reconfigurable optical transmitter. A laser array outputs a plurality of laser signals (which may further be modulated based on electrical signals), each of the plurality of laser signals having a wavelength, wherein the wavelength of each of the plurality of laser signals is tunable based on other electrical signals. An optical router receives the plurality of (modulated) laser signals at input ports and outputs the plurality of received (modulated) laser signals to one or more output ports based on the tuned wavelength of each of the plurality of received laser signals. This reconfigurable transmitter enables dynamic bandwidth allocation for multiple destinations via the tuning of the laser wavelengths.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: December 20, 2016
    Assignee: Aurrion, Inc.
    Inventors: Brian Koch, Daniel Sparacin, Alexander Fang
  • Patent number: 9520946
    Abstract: One example relates to an optical engine comprising a given layer of given material overlaying an optical waveguide of another material. The given layer of given material can comprise an aligning seat to receive an optical transmitter to provide the optical signal. The aligning seat can also align the optical transmitter such that the optical transmitter provides the optical signal in a direction that is substantially non-oblique relative to a longitudinal axis of the optical waveguide. The optical engine can also include an optical signal redirector to tilt the optical signal by a tilt angle. The optical waveguide can comprise a grating coupler to diffract the optical signal provided at the tilt angle into the optical waveguide.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: December 13, 2016
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Zhen Peng, David A. Fattal, Marco Fiorentino
  • Patent number: 9488787
    Abstract: An optical cross-connect including two deflector arrays optically separated by an angle-to-offset (ATO) element, wherein each deflector array includes a plurality of deflectors aligned in an array direction, each deflector array having a switching direction substantially perpendicular to the corresponding array direction, the array direction of the two deflector arrays being substantially perpendicular. Beam shaping optics convert light transmitted towards the first deflector array to have an elliptical cross-section at the first deflector array, thus providing a relatively simple and compact optical cross-connect.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: November 8, 2016
    Assignee: Lumentum Operations LLC
    Inventor: Paul Colbourne
  • Patent number: 9476950
    Abstract: The invention relates to a measuring instrument for time-variable magnetix fluxes, or flux gradients, to electrical resistance elements, and to a measuring system comprising a measuring instrument or electrical resistance element according to the invention. The core component of the measuring instrument is a flux transformer composed of a base material which has a phase transition to the superconducting state. According to the invention, even when the base material is in the superconducting state, this flux transformer comprises at least one load region having electrical resistance that is other than zero for dissipating the electric energy in the conductor loop thereof. For this purpose, according to the invention the conductor loop and the magnetic field source are disposed in one plane and are typically photolithographically structured. The resistance elements according to the invention, having resistance values of ?10?4?, are used as core components in the measuring instrument.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: October 25, 2016
    Assignee: Forschungszentrum Juelich GmbH
    Inventors: Mikhail Faley, Ulrich Poppe, Robert L. Fagaly
  • Patent number: 9459403
    Abstract: The invention relates to an apparatus for generating azimuthally or radially polarized radiation by means of an optical waveguide (1), wherein the optical waveguide (1) has a structure which is suitable for conducting azimuthally or radially polarized modes (5, 7). The invention proposes that the azimuthally or radially polarized modes (5, 7) in the optical waveguide (1) have different effective refractive indices and, within the optical waveguide (1), a narrow-band grating (2) is arranged, in particular a fiber Bragg grating (2) which is designed such that the spectral distance between two azimuthally or radially polarized resonant modes (5, 7) is equal to or greater than the associated spectral bandwidth.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: October 4, 2016
    Assignees: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Friedrich-Schiller-Universitaet Jena
    Inventors: Andreas Tuennermann, Christoph Jocher, César Jauregui Misas, Jens Limpert
  • Patent number: 9453969
    Abstract: A grating-coupler assembly with a small mode-field diameter for photonic-integrated-circuit systems is disclosed. The assembly includes a silicon waveguide supported by a silicon-on-insulator substrate, and a grating coupler supported by the substrate and optically coupled to the silicon waveguide. The assembly has an optical fiber with a mode-field diameter in the range from 5 ?m to 6 ?m. One end of the optical fiber is disposed adjacent the grating coupler to define a coupling efficiency of 0.7 or greater.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: September 27, 2016
    Assignee: CORNING OPTICAL COMMUNICATIONS LLC
    Inventors: Andrey Kobyakov, Sergey Anatol'evich Kuchinsky, Xue Liu, Aramais Zakharian
  • Patent number: 9435944
    Abstract: A method, apparatus and system for forming a fiber optic cable is disclosed. A first pattern of a phase mark is formed at a first location in the fiber optic cable. A relational parameter between the fiber optic cable and the phase mask is changed and a second pattern of the phase mask is formed at a second location in the fiber optic cable. The second pattern is related to the first pattern via the change in the relational parameter between the fiber optic cable and the phase mask. A controller can be used to control the relational parameter.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: September 6, 2016
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Daniel S. Homa, Brooks A. Childers
  • Patent number: 9438008
    Abstract: A technique related to a semiconductor chip is provided. An optical gain chip is attached to a semiconductor substrate. An integrated photonic circuit is on the semiconductor substrate, and the optical gain chip is optically coupled to the integrated photonic circuit thereby forming a laser cavity. The integrated photonic circuit includes an active intra-cavity thermo-optic optical phase tuner element, an intra-cavity optical band-pass filter, and an output coupler band-reflect optical grating filter with passive phase compensation. The active intra-cavity thermo-optic optical phase tuner element, the intra-cavity optical band-pass filter, and the output coupler band-reflect optical grating filter with passive phase compensation are optically coupled together.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: September 6, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Jason S. Orcutt
  • Patent number: 9417410
    Abstract: A system for grating couplers incorporating perturbed waveguides is disclosed and may include, in a semiconductor photonics die, communicating optical signals into and/or out of said semiconductor die utilizing a grating coupler on the semiconductor photonics die, where the grating coupler includes perturbed waveguides as scattering elements, and the perturbed waveguides comprise rows of continuous waveguides defined by non-discrete scatterers. The perturbed waveguides may include a variable width along a length of the perturbed waveguides. The grating coupler may include a single polarization grating coupler comprising perturbed waveguides and a non-perturbed grating, or a polarization splitting grating coupler including two sets of rows of perturbed waveguides at a non-zero angle from each other.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: August 16, 2016
    Assignee: Luxtera, Inc.
    Inventors: Lieven Verslegers, Attila Mekis
  • Patent number: 9411106
    Abstract: A grating structure has a plurality of gratings. In one example, one or more of the gratings are configured: to be non-uniformly spaced with respect to one or more other ones of the gratings; and to optically couple a first light conduit and a second light conduit enabling light having a first polarization and light having a second polarization to pass through the grating structure and propagate in the same direction in the first light conduit or the second light conduit. The non-uniform spacing of the gratings may represent an intersection or a union of a period associated with the light having the first polarization and a period associated with the light having the second polarization.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: August 9, 2016
    Assignee: International Business Machines Corporation
    Inventors: Fuad E. Doany, Frank R. Libsch, Daniel P. Morris, Jeonghwan Song
  • Patent number: 9389351
    Abstract: The planar polarization transformer for a normally incident optical wave or beam having a given vacuum wavelength ? comprises an optical planar grating between a cover medium of refractive index nc and an optical substrate of refractive index ns, this planar grating defining a binary index modulation or corrugation of substantially rectangular profile with periodic ridges. This polarization transformer is characterized in that the ridge refractive index nr is larger than the substrate refractive index ns, the grating period ? is larger than 0.4·?/nc, the substrate refractive index ns is smaller than 2.7·nc, and the index modulation or corrugation is designed such that, according to the grating mode dispersion equation, the effective index of the mode TE0 is larger than the substrate index ns and the effective index of the mode TM0 is larger than the cover refractive index and smaller than the substrate index.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: July 12, 2016
    Assignee: Université Jean-Monnet
    Inventors: Thomas Kaempfe, Olivier Parriaux
  • Patent number: 9377665
    Abstract: An optical modulator includes: a substrate that has electrooptical effect and has a Mach-Zehnder modulator that has a 2×2 coupler acting as a splitter, two intermediate waveguides coupled to outputting waveguides of the splitter and another 2×2 coupler acting as a combiner coupled to the two intermediate waveguides; and a suppresser that suppresses a power of an output light from an uncoupled waveguide and an input light into the uncoupled waveguide of at least one of the 2×2 couplers in an extending direction of the Mach-Zehnder modulator.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: June 28, 2016
    Assignee: FUJITSU OPTICAL COMPONENTS LIMITED
    Inventor: Masaki Sugiyama
  • Patent number: 9360617
    Abstract: The invention relates to a mode filter for reducing higher-order modes, with an optical fiber (1), which has a core (2) and a cladding (3) surrounding the latter, wherein the cladding (3) and core (2) have refractive indices that differ from one another. In order to develop an alternative to the prior art, the mode filter according to the invention is designed in such a manner that the fiber (1) has, in a transition region (4) between core (2) and cladding (3), at least one local refractive index modification region (5) which is arranged in the radially outer region of the core (2) and extends into the region of the cladding (3).
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: June 7, 2016
    Assignees: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V., Fried-Schiller-Universitaet Jena
    Inventors: Christian Voigtlaender, Jens Ulrich Thomas, Robert Williams, Stefan Nolte, Andreas Tuennermann
  • Patent number: 9356419
    Abstract: A technique related to a semiconductor chip is provided. An optical gain chip is attached to a semiconductor substrate. An integrated photonic circuit is on the semiconductor substrate, and the optical gain chip is optically coupled to the integrated photonic circuit thereby forming a laser cavity. The integrated photonic circuit includes an active intra-cavity thermo-optic optical phase tuner element, an intra-cavity optical band-pass filter, and an output coupler band-reflect optical grating filter with passive phase compensation. The active intra-cavity thermo-optic optical phase tuner element, the intra-cavity optical band-pass filter, and the output coupler band-reflect optical grating filter with passive phase compensation are optically coupled together.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: May 31, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Jason S. Orcutt
  • Patent number: 9356269
    Abstract: A battery pack includes a plurality of battery cells arranged along one direction, a top cover covering the plurality of battery cells and the top cover includes an opening in at least one portion thereof, and a temperature measuring member including a main body portion mounted in the opening and a wire portion accommodating a wire connected to a sensor. The sensor is built into the main body portion and measures a temperature of at least one of the battery cells.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: May 31, 2016
    Assignees: SAMSUNG SDI CO., LTD., ROBERT BOSCH GmbH
    Inventor: Myung-Chul Kim
  • Patent number: 9341770
    Abstract: An optical fiber connector embedded with a Bragg grating includes: a ferrule formed with a reception unit for inserting and fixing a temperature compensation connection port from one end, a space unit extended from the reception unit toward inside, and an optical fiber insertion hole penetrating a side surface of the other end along a center of an axial direction from an inclined surface gradually narrowed toward inside of the space unit; the temperature compensation connection port formed with a connection unit contacting with the reception unit of the ferrule, an optical fiber support unit having an outer diameter smaller than an inner diameter of the space unit of the ferrule from the connection unit and protruding to be spaced apart from an inlet of the ferrule by a predetermined distance to form a space for accommodating the Bragg grating and support an optical fiber, and the optical fiber insertion hole penetrating both ends along the center of the axial direction to insert the optical fiber; an optical
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: May 17, 2016
    Assignee: MEL TELECOM INC.
    Inventors: Byoung Whi Kim, Mahn Yong Park, Gil Dong Lee, Geon Jeong
  • Patent number: 9341786
    Abstract: An optomechanical assembly for a photonic chip is disclosed. The optomechanical assembly may include a planar lightwave circuit optically coupled to a plurality of vertical coupling gratings on the photonic chip, to couple light between an optical connector abutting the planar lightwave circuit and the photonic chip.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: May 17, 2016
    Assignee: Lumentum Operations LLC
    Inventors: Claude Gamache, Adonios Bitzanis, Michael Ayliffe
  • Patent number: 9336814
    Abstract: A heat-assisted magnetic recording (HAMR) transducer is coupled with a laser for providing energy and has an air-bearing surface (ABS) configured to reside in proximity to a media during use. The HAMR transducer includes a write pole, at least one coil, and an inverse tapered waveguide optically coupled with the laser. The write pole is configured to write to a region of the media. The coil(s) energize the write pole. The inverse tapered waveguide includes an entrance distal from the ABS, a bottom proximate to the ABS, a first side and a second side opposite to the first side. The first side and the second side diverging such that at least a portion of the inverse tapered waveguide between the bottom and the top is wider than the entrance.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: May 10, 2016
    Assignee: Western Digital (Fremont), LLC
    Inventors: Zhong Shi, Michael V. Morelli, Yunfei Li, Matthew R. Gibbons
  • Patent number: 9324920
    Abstract: An optoelectronic semiconductor component includes an optoelectronic semiconductor chip and an optical element. A connecting layer includes a transparent oxide arranged between the semiconductor chip and the optical element. The connecting layer directly adjoins the semiconductor chip and the optical element and fixes the optical element on the semiconductor chip. A method for fabricating an optoelectronic semiconductor component is furthermore specified.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: April 26, 2016
    Assignee: OSRAM OPTO SEMICONDUCTORS GMBH
    Inventors: Matthias Sabathil, Andreas Ploessl, Norwin von Malm, Alexander Linkov, Lutz Hoeppel, Christopher Koelper
  • Patent number: 9323004
    Abstract: An optical device and a method of manufacturing an optical device. The optical device includes: a conversion means for converting propagation light propagating through an optical waveguide into parallel light and for outputting the parallel light; and a first lens means for focusing the parallel light outputted from the conversion means on a core of an optical fiber. The method includes: converting propagation light propagating through an optical waveguide into parallel light; outputting the parallel light; and focusing, using a first lens, the parallel light on a core of an optical fiber.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: April 26, 2016
    Assignee: International Business Machines Corporation
    Inventor: Yoichi Taira
  • Patent number: 9322233
    Abstract: A downhole activation system within a tubular. The system includes an axially movable member; a first magnetic field source having a first field with a first axial orientation movable with the member. A second magnetic field source having a second field with an axial orientation different from the first orientation and separated from the first magnetic field source. The second field being magnetically repulsed by the first field; and, a biasing device urging the second magnetic field source towards the first magnetic field source; wherein movement of the first magnet via the member towards the second magnet moves the second magnet in a direction against the biasing device. A method of activating an activatable member in a downhole tubular.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: April 26, 2016
    Assignee: BAKER HUGHES INCORPORATED
    Inventor: Kenneth Wilson
  • Patent number: 9310593
    Abstract: A method and system of collecting radiation with an array of lenses or a diffractive optical element are disclosed, the method includes: modifying angles of convergence and/or divergence, and a direction of propagation, with a diffractive element, and coupling the radiation into optical fibers, without separating the radiation into separate bands. The system includes an array of lenses or a diffractive optical element; a broadband holographic optical element, and at least one optical fiber, wherein the array of lenses or the diffractive optical element is configured to collect light and direct the light to the broadband holographic optical element, and wherein the broadband holographic optical element is configured to partially collimate and/or redirect light into the at least one optical fiber, and wherein the at least one optical fiber is configured to transmit the radiation away from the array of lenses or the diffractive optical element.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: April 12, 2016
    Assignee: Luminit LLC
    Inventor: Russell M. Kurtz
  • Patent number: 9310565
    Abstract: Described herein are technologies related to passive or active cloaking devices. More particularly, the passive or active cloaking devices utilize input/output grating couplers and waveguides to create an impression of invisibility on an object that is covered by the passive or active cloaking devices.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: April 12, 2016
    Assignee: Intel Corporation
    Inventors: Ian A. Young, Johanna M. Swan, Robert L. Sankman, Marko Radosavljevic
  • Patent number: 9279935
    Abstract: A single-mode transmission optical fiber includes a central core region radially outwardly from a centerline to a radius r1 and having a positive relative refractive index ?1; a first inner cladding region extending radially outwardly from the central core to a radius r2 and having a negative relative refractive index ?2; a second inner cladding region extending radially outwardly from the first inner cladding region to a radius r3 and having a non-negative relative refractive index ?3; an intermediate cladding region extending radially outwardly from the second inner cladding region to a radius r4 having a negative relative refractive index ?4 larger in absolute value than the relative refractive index ?2; and an outer cladding region extending radially outwardly from the intermediate cladding region and having a non-negative relative refractive index ?5; wherein the relative refractive index ?2 of the first inner cladding region is ?0.1·10?3 to ?1.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: March 8, 2016
    Assignee: PRYSMIAN S.P.A.
    Inventors: Silvio Frigerio, Ricardo Antunes De Camargo, Lidia Terruzzi
  • Patent number: 9274348
    Abstract: A dispersive device has a beam expanding optical system which includes first and second prisms each having a pair of faces inclined relative to each other, and expands light containing a plurality of wavelength components by passing the light through each of the faces of the first and second prisms; and a dispersive element which emits the light expanded by the beam expanding optical system, at different diffraction angles by the respective wavelength components. A direction of variation of an output angle of the light emitted from the beam expanding optical system due to temperature change is configured to be a direction to suppress variation of the diffraction angles of the respective wavelength components emitted from the dispersive element due to the temperature change.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: March 1, 2016
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Manabu Shiozaki, Hidehisa Tazawa
  • Patent number: 9270076
    Abstract: An optical amplifier includes an optical gain fiber into which signal light and pump light are input and at least one relative phase shifter is inserted. Preferably, the relative phase shifter is inserted so that the relative phase in the lengthwise direction of the optical gain fiber falls within a predetermined range containing 0.5?. Preferably, the optical gain fiber is a highly non-linear optical fiber having a non-linearity constant of at least 10/W/km. Preferably, the dispersion of the optical gain fiber is within the range from ?1 ps/nm/km to 1 ps/nm/km in an amplification band. Preferably, the absolute value of the dispersion slope of the optical gain fiber at a zero dispersion wavelength is no greater than 0.05 ps/nm2/km.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: February 23, 2016
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Shigehiro Takasaka, Yu Mimura
  • Patent number: 9234933
    Abstract: A solar cell testing system includes a multifunctional testing light source, a measuring unit, and an arithmetic unit. The multifunctional testing light source is configured to be switched to output a simulated solar light to a solar cell or asynchronously output a plurality of narrowband lights to the solar cell. The measuring unit is coupled to the solar cell and measures the solar cell's response to the simulated solar light and response to the asynchronously outputted narrowband lights. The arithmetic unit is coupled to the multifunctional testing light source and the measuring unit; it determines the solar cell's conversion efficiency and spectral response based on the solar cell's response to the simulated solar light and response to the asynchronously outputted narrowband lights.
    Type: Grant
    Filed: December 15, 2012
    Date of Patent: January 12, 2016
    Assignee: CHROMA ATE INC.
    Inventors: Lan-Sheng Yang, I-Shih Tseng, Ching-Lin Lee, Ming-Chieh Lin, Yi-Lung Weng
  • Patent number: 9209603
    Abstract: A laser comprises a front mirror (FM), a gain section coupled to the FM, a phase section coupled to the gain section such that the gain section is positioned between the phase section and the FM, and a back mirror (BM) comprising an interferometer and coupled to the phase section such that the phase section is positioned between the BM and the gain section. A method comprises splitting a first light into a second light and a third light, reflecting the second light to form a second reflected light, reflecting the third light to form a third reflected light, and causing the second reflected light and the third reflected light to interfere and combine to form a combined light to narrow a reflectivity peak spectrum width.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: December 8, 2015
    Assignee: Futurewei Technologies, Inc.
    Inventors: Hongmin Chen, Hongbing Lei, Xiao Shen
  • Patent number: 9188717
    Abstract: A light-trapping sheet of the present invention includes: a light-transmitting sheet 2 having first and second principal surfaces; and a plurality of light-coupling structures 3 arranged in an inner portion of the light-transmitting sheet at a first distance or more and a second distance or more from the first and second principal surfaces, respectively, wherein: each of the plurality of light-coupling structures 3 includes a first light-transmitting layer, a second light-transmitting layer, and a third light-transmitting layer arranged therebetween; a refractive index of the first and second light-transmitting layers is smaller than a refractive index of the light-transmitting sheet 2; a refractive index of the third light-transmitting layer is larger than the refractive index of the first and second light-transmitting layers; and the third light-transmitting layer has a diffraction grating parallel to the first and second principal surfaces of the light-transmitting sheet.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: November 17, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Seiji Nishiwaki
  • Patent number: 9178713
    Abstract: In a line termination unit integrated circuit in a point-to-multipoint network, a receiver receives an upstream transmission from a network termination unit within the point-to-multipoint network, a transmitter transmits a downstream transmission to a network termination unit within the point-to-multipoint network, and an internal processor operatively coupled to the receiver processes sub-fields within the overhead field of the upstream transmission. The internal processor is also operatively coupled to the transmitter to assemble the overhead field of the downstream transmission. The upstream transmission is an upstream transmission convergence frame format having an overhead field and a payload field, and the downstream transmission is a downstream transmission convergence frame format having an overhead field and a payload field.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: November 3, 2015
    Assignee: Marvell International Ltd.
    Inventors: Cesar A. Johnston, John M. Chiang
  • Patent number: 9178967
    Abstract: A HART analog input module with a differential input comprises a plurality of input stage processors respectively connected to a plurality of HART field devices to detect a DC signal and a HART communication signal from an input signal and output the DC signal and a HART communication signal, in a case a signal superimposed with the DC signal and the HART communication signal is inputted from a relevant HART field device, a multiplexer sequentially outputting a DC signal and a HART communication signal respectively outputted from each input stage processor in response to a provided control signal, an A/D conversion processor converting a DC signal of each channel sequentially outputted from the multiplexer to a digital signal, a HART modem demodulating a HART communication signal of each channel sequentially outputted from the multiplexer, and a controller providing a control signal to the multiplexer and processing the digital signal outputted from the A/D conversion processor and the HART modem.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: November 3, 2015
    Assignee: LSIS Co., Ltd.
    Inventor: Yonggak Sin
  • Patent number: 9170469
    Abstract: An apparatus for altering a chirp of an input light comprising one or more grating structures and one or more electro-optical blocks. In which a voltage is applied to the one or more electro-optical blocks to alter a chirp of light exiting the apparatus.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: October 27, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takefumi Ota
  • Patent number: 9164238
    Abstract: Provided are an optical coupler and an arrayed-waveguide grating structure including the same. The coupler includes a lower clad layer, a core comprising a slab waveguide region disposed on one side of the lower clad layer and a ridge waveguide region disposed on the other side of the lower clad layer, and an upper clad disposed on the core, wherein the ridge waveguide region comprises a self-focusing region configured to focus an optical signal provided form the slab waveguide region and thus to prevent scattering of the optical signal.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: October 20, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jaegyu Park, Hyundai Park, Jiho Joo, Myung joon Kwack, Gyungock Kim
  • Patent number: 9166678
    Abstract: Embodiments of the invention describe (M)MPICs, which include RF processing components and heterogeneous silicon photonic components that include a first region of silicon material and a second region of non-silicon material with high electro-optic efficiency (e.g., III-V material). Said heterogeneous silicon components are fabricated from the silicon and non-silicon material, and therefore may be interconnected via silicon/non-silicon waveguides formed from the above described regions of silicon/non-silicon material. The effect of interconnecting these components via said optical waveguides is that an RF signal may be processed using photonic components consistent with the size of an MMIC, without the need for any optical fibers; therefore, embodiments of the invention describe a chip scale microwave IC that has the broad optical bandwidth of photonics without any optical interfaces to fiber.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: October 20, 2015
    Assignee: Aurrion, Inc.
    Inventors: Gregory Alan Fish, Volkan Kaman, Anand Ramaswamy
  • Patent number: 9164278
    Abstract: A micro-optical switching device, an image display apparatus including the micro-optical switching device, and a method of manufacturing the micro-optical switching device are provided. The micro-optical switching device includes a substrate; a first electrode disposed on the substrate and including a first opening array, wherein the first opening array includes a plurality of openings; and a second electrode disposed spaced apart from the first electrode and including a second opening array including a plurality of openings, wherein the plurality of openings of the second opening array do not overlap with the plurality of openings of the first opening array.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: October 20, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-sik Shim, Jong-seok Kim, Yong-seop Yoon, Hyung Choi, Woon-bae Kim
  • Patent number: 9164290
    Abstract: Grating configurations are described for creating time sequenced field of view (FOV) tiles for a waveguide display. Pairings of non-output diffraction gratings and output diffraction gratings are activated to create a number of FOV tiles in a time sequence, for example in a frame update period for the image. Examples of a non-output grating are an input grating and a fold grating. For a set of at least three gratings used to make the pairings, each non-output grating is paired with each output grating. The number of pairings, and so the number of FOV tiles, is equal to a product of the total number of non-output gratings and the total number of output gratings. At least one diffraction grating in the pairing is an active pairing. Also described is a multiplexed diffraction grating including multiplexed K-vectors which increases the overall angular bandwidth for both incidence and diffraction.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: October 20, 2015
    Assignee: MICROSOFT CORPORATION
    Inventors: Steve J. Robbins, Ian A. Nguyen
  • Patent number: 9158279
    Abstract: A spatial light modulator may include a refraction layer including first and second regions with refractive indices different from each other; and/or a metal thin film on a lower face of the refraction layer configured to generate surface plasmons due to light incident on the metal thin film via the refraction layer. When first light is incident on the refraction layer, a phase difference between light reflected by the first and second regions may occur. A spatial light modulator may include a metal thin film and a refraction layer on the metal thin film. The refraction layer may include a first region with a first refractive index and a second region with a second refractive index different from the first refractive index. When first light is incident on the refraction layer, there may be a phase difference between light reflected from the first and second regions.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: October 13, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Gae-hwang Lee, Jae-eun Jung, Kyu-young Hwang
  • Patent number: 9146442
    Abstract: A Mach-Zehnder interferometer type optical modulator includes a first end facet and a reflecting portion opposing the first end facet; a single optical coupler including input and output ports, the optical coupler being disposed between the first end facet and the reflecting portion; first and second optical waveguides that are connected to the input ports of the optical coupler; third and fourth optical waveguides that are connected to the output ports of the optical coupler; and a phase shifting section disposed between the optical coupler and the reflecting portion. The phase shifting section includes a first optical waveguide structure constituting part of the third optical waveguide; a first upper electrode on the first optical waveguide structure; a second optical waveguide structure constituting part of the fourth optical waveguide; and a second upper electrode on the second optical waveguide structure.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: September 29, 2015
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Jun-ichi Hashimoto
  • Patent number: 9143235
    Abstract: The invention provides optical interconnects of data-processing cores of multicore chips by means of digital planar holographic microchips on a host chip. The device comprises “N” laser light sources that generate lights of “N” different wavelength and “N” data-processing cores that produce data. Each data-processing core contains optical signal receivers and modulators/transceivers that receive lights from the laser light sources and have a function of modulating the light obtained from the laser light sources with the data produced by the cores thus producing modulated light signals which are further processed by the holographic microchip and then decoded by the receivers. The device is efficient in that it replaces electrical interconnects between the cores with optical interconnects and can be matched to current semiconductor production technology.
    Type: Grant
    Filed: October 14, 2012
    Date of Patent: September 22, 2015
    Assignee: NANO-OPTIC DEVICES LLC
    Inventors: Vladimir Yankov, Konstantin Kravtsov, Leonid Velikov
  • Patent number: 9134479
    Abstract: An optical demultiplexing device includes a first portion operative to receive an input optical signal having a first polarization, a second polarization and multiple channels, and split the input optical signal into a first optical signal having the first polarization and a second optical signal having the first polarization, and an optical demultiplexing portion communicatively connected to the polarization splitter portion, the optical demultiplexing portion operative to receive a combination of the first optical signal and the second optical signal, and output each channel of the first optical signal and the second optical signal to a photodetector device corresponding to each channel.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: September 15, 2015
    Assignee: International Business Machines Corporation
    Inventors: Solomon Assefa, Douglas M. Gill, William M. Green
  • Patent number: 9134488
    Abstract: An optical coupling connector includes a main body and at least one optical fiber fixed to the main body. The main body includes a top surface, a first bottom surface, an outer side surface perpendicularly connecting with the top surface. The top surface defines an opening. The opening includes a second bottom surface. The first bottom surface includes at least one second coupling lens, the second bottom surface includes at least one first coupling lens, central axis of each first coupling lens and central axis of each second coupling lens are coaxial with each other. Each optical fiber includes an incident surface, an angle between the incident surface and a horizontal surface is about 45 degrees, and the incident surface is arranged toward the first coupling lens.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: September 15, 2015
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Hsin-Shun Huang
  • Patent number: 9122244
    Abstract: A holography device may include a light reaction layer configured to react with light to form and remove a diffraction grating, and a metal thin film on the light reaction layer. When first light is incident on the metal thin film while the grating is formed in the light reaction layer, surface plasmon formed on the metal thin film may be diffracted so as to output a holography image. A method of processing a holography image may include recording the image on a holography device by irradiating first light to a light reaction layer to form a diffraction grating, outputting the image by irradiating second light to a metal thin film on the light reaction layer to diffract surface plasmon formed on the metal thin film, and deleting the image from the holography device by irradiating third light to the light reaction layer to remove the grating.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: September 1, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Gae-hwang Lee, Jae-eun Jung, Kyu-young Hwang