Grating Patents (Class 385/37)
  • Patent number: 10330863
    Abstract: Planar waveguide junctions are described with a waggled transition section connecting input waveguide sections with output waveguides sections, in which the waggled transitions have alternating segments matching the input waveguide and output waveguides to efficiently transition the optical signal. The planar waveguide junctions can be used to form efficient optical splitters, mixers, or taps.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: June 25, 2019
    Assignee: NeoPhotonics Corporation
    Inventors: Anthony J. Ticknor, Brian R. West
  • Patent number: 10320150
    Abstract: An optical semiconductor apparatus includes: semiconductor laser devices having different emission wavelengths and grouped into at least a first group and a second group; and an arrayed waveguide grating connected to the semiconductor laser devices of the first and second groups and configured to combine laser light beams radiating from the semiconductor laser devices into a same point. The arrayed waveguide grating is configured to combine laser light beams from the semiconductor laser devices belonging to the first group into the same point by diffraction in a first diffraction order in the arrayed waveguide grating, and combine laser light beams from the semiconductor laser devices belonging to the second group into the same point by diffraction in a second diffraction order different from the first diffraction order, in the arrayed waveguide grating.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: June 11, 2019
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Toshihito Suzuki, Kazuaki Kiyota, Tatsuro Kurobe
  • Patent number: 10317584
    Abstract: A grating coupler and a preparation method thereof are provided. The grating coupler includes a substrate layer, a lower confining layer, a waveguide core layer, and an upper confining layer that are sequentially arranged. The waveguide core layer includes a submicron waveguide, a first tapered waveguide, and a waveguide array. The waveguide array includes at least two waveguide groups, the waveguide group includes at least one waveguide chain, the waveguide chain includes at least two waveguides that have different widths, and the waveguides in the waveguide chain are connected to each other. An end of the waveguide chain in the waveguide array is connected to a wide end of the first tapered waveguide, and a narrow end of the first tapered waveguide is connected to the submicron waveguide.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: June 11, 2019
    Assignee: HUAWEI TECHNOLOGIES, CO., LTD.
    Inventors: Ming Li, Xin Tu, Hongyan Fu
  • Patent number: 10302585
    Abstract: An optical module includes first and second transparent substrates and a spacer between the first and second transparent substrates, holding the first transparent substrate in proximity to the second transparent substrate, with first and second diffractive optical elements (DOEs) on respective faces of the first and second transparent substrates. At least first and second capacitance electrodes are disposed respectively on the first and second transparent substrates in proximity to the first and second DOEs. Circuitry is coupled to measure changes in a capacitance between at least the first and second capacitance electrodes.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: May 28, 2019
    Assignee: APPLE INC.
    Inventors: Hannah D. Noble, Kevin A. Sawyer, Martin B. Adamcyk, Yazan Z. Alnahhas, Yu Qiao Qu, Moshe Kriman, Adar Magen
  • Patent number: 10274682
    Abstract: A system for providing optical connections that may include an optical grating structure and an optical waveguide coupled to the optical grating structure. The optical grating structure may be configured to receive an optical wave, through an interposer, from an optical source. The optical grating structure may be configured to transform the optical wave into a predetermined electromagnetic propagation mode.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: April 30, 2019
    Assignee: Ciena Corporation
    Inventors: Michael Y. Frankel, John P. Mateosky, Vladimir Pelekhaty
  • Patent number: 10261223
    Abstract: Exemplary method and system for providing a diffractive configuration in an optical arrangement are provided. For example, a material can be provided with at least one patterned surface having a very high aspect ratio. The material can be connected with at least one portion of a waveguide arrangement using a pre-polymer adhesive composition. Further, the pre-polymer adhesive composition can be caused to polymerize so as to form the diffractive configuration which at least approximately replicates a structure or at least one feature of the patterned surface.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: April 16, 2019
    Assignees: Canon USA, Inc., The General Hospital Corporation
    Inventors: Guillermo J Tearney, Dongkyun Kang, Mitsuhiro Ikuta, George M. Whitesides, Ramses V. Martinez
  • Patent number: 10261245
    Abstract: A microstructured optical fiber comprises a doped core region embedded in a cladding layer, and a plurality of longitudinal tubes, wherein a radial cross-section of the optical fiber comprises a central hexagonal portion comprising a plurality of holes arranged according to a hexagonal grid surrounding a core section. Each hole corresponds to a respective tube, within a hexagonal boundary of the grid, and the plurality of holes comprises holes of first and second types arranged in a biaxial mirror-symmetric configuration. The holes of the first type are arranged in two side holey structures comprising distinct sub-grids of the hexagonal grid, defined by respective outer boundaries corresponding to portions of the hexagonal boundary of the grid and respective inner boundaries. Outer tangential lines to the respective inner boundaries cross each other at the opposed side of the core with respect to the side of the respective side holey structure.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: April 16, 2019
    Assignee: VRIJE UNIVERSITEIT BRUSSEL
    Inventors: Sanne Sulejmani, Thomas Geernaert, Francis Berghmans, Hugo Thienpont
  • Patent number: 10255557
    Abstract: Systems and methods are provided for coupling two flux qubits. A quantum circuit assembly includes a first flux qubit, having at least two potential energy minima, and a second flux qubit, having at least two potential energy minima. A system formed by the first and second qubits has at least four potential energy minima prior to coupling, each of the four potential energy minima containing at least one eigenstate of a system comprising the first flux qubit and the second flux qubit. A coupler creates a first tunneling path between a first potential energy minimum of the system and a second potential energy minimum of the system, and a second tunneling path between a third potential energy minimum of the system and a fourth potential energy minimum of the system. The coupler creates the first and second tunneling paths between potential energy minima representing states of equal bit parity.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: April 9, 2019
    Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: Ryan J. Epstein, David George Ferguson
  • Patent number: 10254536
    Abstract: A display subsystem for a virtual image generation system. The display subsystem comprises a planar waveguide apparatus, and an optical fiber having a distal tip affixed relative to the planar waveguide apparatus, and an aperture proximal to the distal tip. The display subsystem further comprises at least one light source coupled the optical fiber and configured for emitting light from the aperture of the optical fiber, and a mechanical drive assembly to which the optical fiber is mounted to the drive assembly. The mechanical drive assembly is configured for displacing the aperture of the optical fiber in accordance with a scan pattern. The display subsystem further comprises an optical waveguide input apparatus configured for directing the light from the aperture of the optical fiber down the planar waveguide apparatus, such that the planar waveguide apparatus displays one or more image frames to the end user.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: April 9, 2019
    Assignee: MAGIC LEAP, INC.
    Inventors: Ivan L. Yeoh, Lionel Ernest Edwin, Aaron Mark Schuelke
  • Patent number: 10228762
    Abstract: The disclosure describes systems and methods of analyzing interactions with a user interface for an application, where the user interface is implemented at least partly within a virtual reality environment. Certain embodiments provide for receiving interactions that include gestures, spatial contexts, and applications contexts, and receiving results from the application, such as application behavior or error conditions. The user interface interactions and the application results are analyzed. Events, metrics, and relationships are determined based on the analysis. In some cases, additional data (such as historical interactions and results, system environment data, or system configuration data) are received and analyzed, and the determined relationships are further based on the additional data.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: March 12, 2019
    Assignee: Adobe Systems Incorporated
    Inventors: Kevin Smith, William Brandon George
  • Patent number: 10228565
    Abstract: A waveguide display presents media to users. The waveguide assembly includes a light source, a source waveguide, an output waveguide, an actuator assembly, and a controller. The light source emits image light based on scanning instructions from the controller. The source waveguide receives the emitted image light, expands the image light in at least one dimension, and outputs an expanded image light to the output waveguide at an input area. The output waveguide outputs the expanded image light from a portion of an output area. The actuator assembly adjusts a first curvature of the source waveguide with a first set of actuators and adjusts a second curvature of the output waveguide with a second set of actuators, where the first curvature is orthogonal to the first curvature.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: March 12, 2019
    Assignee: Facebook Technologies, LLC
    Inventor: Pasi Saarikko
  • Patent number: 10209449
    Abstract: A structure for coupling an optical signal between an integrated circuit photonic structure and an external optical fiber is disclosed as in a method of formation. The coupling structure is sloped relative to a horizontal surface of the photonic structure such that light entering or leaving the photonic structure is substantially normal to its upper surface.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: February 19, 2019
    Assignee: Micron Technology, Inc.
    Inventor: Harel Frish
  • Patent number: 10209440
    Abstract: An imaging sensor includes at least one fiber Bragg grating for filtering an image from a subject for wavelength bands, and an imaging device for converting an image transmitted through the fiber Bragg grating into a digital signal.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: February 19, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Mun Seob Lee, Nack Woo Kim, Gi Hyeon Min, Byung-Tak Lee, Young Sun Kim, Sim-Kwon Yoon, Dae Won Choi
  • Patent number: 10203504
    Abstract: A waveguide display is used for presenting media to a user. The waveguide assembly includes a light source, a source waveguide, an output waveguide, and a controller. The light source emits image light based on scanning instructions from the controller. The source waveguide receives the image light from the light source, expands the image light in at least one dimension, and outputs an expanded image light to the output waveguide at an input area. The output waveguide outputs the expanded image light from a portion of an output area based on a direction of the expanded light from the source waveguide.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: February 12, 2019
    Assignee: Facebook Technologies, LLC
    Inventor: Pasi Saarikko
  • Patent number: 10180385
    Abstract: Disclosed is a system and method for characterizing optical filters in a flow cytometer and optionally checking the operation of detectors in the flow cytometer. In some embodiments, the system may utilize an LED board having an opening through which the fluorescence and side scatter beams, rays, or images pass and light emitting diodes around the opening that emit light having different spectral profiles. The different spectral profiles allow the system to identify the optical filters that are placed in the flow cytometer, to verify detector operation, to assist in instrumentation troubleshooting, and to provide a quantitative reference for detector comparison.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: January 15, 2019
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: Daniel Nelson Fox, Susan Hunter
  • Patent number: 10175423
    Abstract: An optical waveguide that performs both in-coupling and out-coupling using two diffractive optical elements is provided. Each optical element is a diffraction grating and can be applied to the same or different surface of the optical waveguide. The diffraction gratings overlap to form two overlapping regions. The first overlapping region in-couples light into the waveguide and the second overlapping region out-couples light from the optical waveguide. Because the optical waveguide only uses two gratings, and therefore only has two grating vectors, the optical waveguide is easier to manufacture than optical waveguides with a greater number of grating vectors.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: January 8, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Jani Kari Tapio Tervo
  • Patent number: 10175489
    Abstract: An optical system that deploys micro electro mechanical system (MEMS) scanners to contemporaneously generate CG images and to scan a terrain of a real-world environment. An illumination engine emits a first spectral bandwidth and a second spectral bandwidth into an optical assembly along a common optical path. The optical assembly then separates the spectral bandwidth by directing the first spectral bandwidth onto an image-generation optical path and the second spectral bandwidth onto a terrain-mapping optical path. The optical system deploys the MEMS scanners to generate CG images by directing the first spectral bandwidth within the image-generation optical path and also to irradiate a terrain by directing the second spectral bandwidth within the terrain-mapping optical path. Accordingly, the disclosed system provides substantial reductions in both weight and cost for systems such as, for example, augmented reality and virtual reality systems.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: January 8, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Steven John Robbins, David Douglas Bohn
  • Patent number: 10168481
    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 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: April 11, 2018
    Date of Patent: January 1, 2019
    Assignee: Luxtera, Inc.
    Inventors: Lieven Verslegers, Attila Mekis
  • Patent number: 10151939
    Abstract: Embodiments of the invention describe systems, apparatuses and methods for providing athermicity and a tunable spectral response for optical filters. Finite impulse response (FIR) filters are commonly implemented in photonic integrated circuits (PICs) to make devices such as wavelength division multiplexing (WDM) devices, asymmetric Mach-Zehnder interferometers (AMZIs) and array waveguide gratings (AWGs). Athermicity of an FIR filter describes maintaining a consistent frequency transmission spectrum as the ambient temperature changes. A tunable spectral response for an FIR filter describes changing the spectrum of an FIR filter based on its application, as well as potentially correcting for fabrication deviations from the design. In addition, embodiments of the invention reduce energy dissipation requirements and control complexity compared to prior art solutions.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: December 11, 2018
    Assignee: Aurrion, Inc.
    Inventors: Jonathan Edgar Roth, Daniel Knight Sparacin, Gregory Alan Fish
  • Patent number: 10132994
    Abstract: Methods and systems for writing a Bragg grating along a grating region of an optical fiber through a polymer coating of the optical fiber are provided. A light beam of ultrafast optical pulses is impinged on the grating region, the ultrafast optical pulses being characterized by writing wavelength at the grating region to which the polymer coating is substantially transparent The light beam is diffracted through a phase mask so as to form an interference pattern defining the Bragg grating at the grating region of the optical fiber. The light beam is also focussed such that the intensity of the optical pulses is below a damage threshold within the polymer coating, and above an FBG inscription threshold within the grating region of the fiber. Optical fiber having Bragg gratings and improved mechanical are also provided.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: November 20, 2018
    Assignee: Universite Laval
    Inventors: Martin Bernier, Réal Vallée, François Trépanier, Julien Carrier
  • Patent number: 10078190
    Abstract: An optical device includes an array of optical grating couplers and a plurality of single-core fiber couplers located over a planar substrate. The optical grating couplers of the array are located to optically couple in a one-to-one manner to optical cores of a multi-core fiber or optical cable having an end located adjacent to the surface. Each single-core fiber coupler includes a planar optical waveguide connecting a corresponding one of the optical couplers of the array to an edge of the substrate.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: September 18, 2018
    Assignee: Alcatel Lucent
    Inventors: Christopher Doerr, Peter Winzer
  • Patent number: 10050675
    Abstract: Aspects of the subject disclosure may include, for example, a transmission device that includes a first coupler that guides a first electromagnetic wave to a first junction to form a second electromagnetic wave that is guided to propagate along the outer surface of the transmission medium via one or more guided-wave modes. These mode(s) have an envelope that varies as a function of angular deviation and/or longitudinal displacement. Other embodiments are disclosed.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: August 14, 2018
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Bruce Stuckman, Paul Shala Henry, Robert Bennett, Irwin Gerszberg, Farhad Barzegar, Donald J. Barnickel, Thomas M. Willis, III
  • Patent number: 10048119
    Abstract: The optical system (1) is intended to measure the bidirectional reflectance and/or transmittance distribution function BRDF, BTDF and BSDF of a surface (10) of at least a portion of an object (7), the system comprising successively: an aplanatic lens (2) having an opening angle, the absolute value of which is comprised between 45° and a value strictly lower than 90°, a converging field lens (3) downstream of the plane P, an image pickup lens (4), the field angle of which is higher than or equal to the convergence angle of the scattered light beams emerging from the field lens, and a video sensor (5), the aplanatic lens (2), the converging field lens (3), the image pickup lens (4) and the video sensor (5) being arranged so as to allow a conjugation C1 between the surface (10) and the entrance pupil of the image pickup lens (4) and a conjugation C2 between an intensity pattern and the video sensor (5).
    Type: Grant
    Filed: January 21, 2013
    Date of Patent: August 14, 2018
    Inventor: Jean-Pierre Lauret
  • Patent number: 10025001
    Abstract: A downhole logging tool comprises an optical sensor to sense a field related to a formation parameter at a first location along the downhole logging tool. A processor receives information from the optical sensor and provides an evaluation of the formation parameter.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: July 17, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventors: E. San Martin, Etienne Marcel Samson, Burkay Donderici
  • Patent number: 10007063
    Abstract: In an example embodiment, a WDM array includes an optical filter, N common ports, N reflection ports, and N pass ports. The N common ports may be positioned to a first side of the optical filter. N may be greater than or equal to two. The N reflection ports may be positioned to the first side of the optical filter. The N pass ports may be positioned to a second side of the optical filter opposite the first side.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: June 26, 2018
    Assignee: FINISAR CORPORATION
    Inventors: Xiaolin Chen, Xucheng Wang, Fan Chen, Steven James Frisken
  • Patent number: 9995892
    Abstract: An optical assembly may include a platform disposed within a housing that has a limited space. The platform may be tilted by a first angle to fit a fiber array into the limited space of the housing. The optical assembly may also include a silicon photonics device mounted on the tilted platform. The silicon photonics device may include a grating coupler. The optical assembly may also include the fiber array directly coupled to the grating coupler on the silicon photonics device at a coupling position that deviates from a vertical coupling position by a second angle.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: June 12, 2018
    Assignee: Finisar Corporation
    Inventor: Xiaojie Xu
  • Patent number: 9989525
    Abstract: The present disclosure provides a diffraction based biosensor containing at least two diffraction gratings. The first grating is referred to as an in-coupling diffraction grating and the coherent light source (laser) is directed to illuminate the in-coupling grating, and the biosensor is configured such that a selected order of the light beam diffracted from the in-coupling diffraction grating illuminates a second biosensor grating coated with analyte-specific receptors which are selected to preferentially bind with analytes being tested for that may or may not be located in a sample being tested.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 5, 2018
    Assignee: AXELA INC.
    Inventors: Alexandre Izmailov, Paul Timothy Smith
  • Patent number: 9971098
    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: March 23, 2017
    Date of Patent: May 15, 2018
    Assignees: Hisense Broadband Multimedia Technologies Co., Ltd., Hisense USA Corp., Hisense International Co., Ltd.
    Inventor: Hua Zhang
  • Patent number: 9966728
    Abstract: Improved Raman Fiber Laser (RFL) generators may include a mid-infrared fiber, e.g., a fiber comprising a tellurite glass, a chalcogenide glass, a fluoride glass, or similar material. A phase-shifted fiber Bragg grating may be inscribed in the fiber. A pump laser generator may be coupled with the fiber in order to supply a pump laser to the fiber. When stimulated by the pump laser, the RFL generator may emit an output laser having a mid-infrared wavelength. A tuner may be used to tune the output laser.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: May 8, 2018
    Assignee: STC.UNM
    Inventor: Ravinder K. Jain
  • Patent number: 9964707
    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: November 7, 2016
    Date of Patent: May 8, 2018
    Assignee: Lumentum Operations LLC
    Inventor: Paul Colbourne
  • Patent number: 9952455
    Abstract: Embodiments of the invention describe systems, apparatuses and methods for providing athermicity and a tunable spectral response for optical filters. Finite impulse response (FIR) filters are commonly implemented in photonic integrated circuits (PICs) to make devices such as wavelength division multiplexing (WDM) devices, asymmetric Mach-Zehnder interferometers (AMZIs) and array waveguide gratings (AWGs). Athermicity of an FIR filter describes maintaining a consistent frequency transmission spectrum as the ambient temperature changes. A tunable spectral response for an FIR filter describes changing the spectrum of an FIR filter based on its application, as well as potentially correcting for fabrication deviations from the design. In addition, embodiments of the invention reduce energy dissipation requirements and control complexity compared to prior art solutions.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: April 24, 2018
    Assignee: Aurrion, Inc.
    Inventors: Jonathan Edgar Roth, Daniel Knight Sparacin, Gregory Alan Fish
  • Patent number: 9946024
    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 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: February 15, 2017
    Date of Patent: April 17, 2018
    Assignee: Luxtera, Inc.
    Inventors: Lieven Verslegers, Attila Mekis
  • Patent number: 9890912
    Abstract: A light-emitting apparatus includes a light-emitting device and an excitation light source. The light-emitting device includes a photoluminescent layer, a light-transmissive layer. At least one of the photoluminescent layer and the light-transmissive layer has a submicron structure having at least projections or recesses. Light emitted from the photoluminescent layer includes first light having a wavelength ?a in air. The distance Dint between adjacent projections or recesses and the refractive index nwav-a of the photoluminescent layer for the first light satisfy ?a/nwav-a<Dint<?a. A thickness of the photoluminescent layer, the refractive index nwav-a, and the distance Dint are set to limit a directional angle of the first light emitted from the light emitting surface. The excitation light source emits excitation light. The light-emitting device is integrally provided with the excitation light source.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: February 13, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akira Hashiya, Taku Hirasawa, Yasuhisa Inada, Yoshitaka Nakamura, Mitsuru Nitta, Takeyuki Yamaki
  • Patent number: 9857605
    Abstract: An internal device having a lightguide which cooperates with an internal light source. A first light coupling element couples an external light source to the lightguide and a second light coupling element extracts the total internal reflection (TIR) from the lightguide. Between the first and second lightguides, an angular grating device and phase grating device are imposed. The angular grating device applies angular diversity to the rays of the TIR light, while the phase grating device applies phase diversity to the rays of the TIR light. Each of the grating devices has a plurality of electrically switchable grating pixels having a unique first and second diffracting state which varies based on the applied voltage.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: January 2, 2018
    Assignee: DIGILENS INC.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern, John James Storey
  • Patent number: 9846288
    Abstract: A fiber optic device includes a support having one or more optical fibers coupled to the support and a base that includes one or more optoelectronic devices. The support is coupled to the base such that one or more of the optoelectronic devices are optically coupled to one or more of the optical fibers. A portion of the one or more optical fibers that is in contact with the support may be bent and one or more of the optoelectronic devices may be optically coupled to the bent portion of one or more of the optical fibers.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: December 19, 2017
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Raman K. Selli, Brian M. Cole, Donald G. Doss
  • Patent number: 9791622
    Abstract: In order to prevent non-uniformity in emission wavelength among different sites along an optical axis direction, provided is a resonator portion including: a waveguide which includes a first area and a second area being adjacent to the first area; and diffraction gratings formed along an optical axis direction. The effective refraction index in the first area is larger than the one in the second area, and the thickness in the first area is larger than the one in the second area. A pitch at the adjacent diffraction gratings at a boundary between the first area and the second area is narrower both than pitches of the diffraction gratings that are formed in the first area and than pitches of the diffraction gratings that are formed in the second area.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: October 17, 2017
    Assignee: OCLARO JAPAN, INC.
    Inventors: Syunya Yamauchi, Atsushi Nakamura, Yoshihiro Tsunemi
  • Patent number: 9787052
    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 15, 2016
    Date of Patent: October 10, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Jason S. Orcutt
  • Patent number: 9780764
    Abstract: A phase quantum bit is disclosed. In one embodiment, the phase quantum bit may comprise a Josephson junction and a distributed element coupled to the Josephson junction. The distributed element provides a capacitive component and an inductive component of the phase quantum bit.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: October 3, 2017
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Aaron A. Pesetski, James E. Baumgardner, Rupert M. Lewis
  • Patent number: 9772176
    Abstract: An optical sensor includes an optical fiber inscribed with a repeated refraction pattern such that light scattered from a location on the optical fiber is scattered at multiple frequencies in a range of frequencies. The inscribed patterns overlap at every measurement point along at least a portion of the length of the sensor. An optical sensing system including control circuitry coupled to the optical fiber detects measurement scatter data from the optical fiber over the range of frequencies, determines a change in the detected measurement scatter data over the range of frequencies, and extracts a parameter describing a state of the optical fiber from the determined change in the detected measurement scatter data.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: September 26, 2017
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: Mark E. Froggatt, Justin W. Klein
  • Patent number: 9766398
    Abstract: An optical apparatus includes an optical waveguide located on a substrate and including a guiding portion and a taper portion, and a grating pattern located on the substrate. The grating pattern includes a plurality of low refractive index portions and a plurality of high refractive index portions, which are alternately arranged in a first direction parallel to a top surface of the substrate. Each of the plurality of high refractive index portions includes a curved inner sidewall and a curved outer sidewall having curvatures defined by circular paths. The inner sidewall and the outer sidewall of at least one of the plurality of high refractive index portions have a first focus position. The inner sidewall or the outer sidewall of at least one of the plurality of high refractive index portions or a sidewall of the taper portion has a second focus position different from the first focus position.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: September 19, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Duanhua Kong, Seong-gu Kim, Hyun-il Byun
  • Patent number: 9759585
    Abstract: In a TDM- and WDM-based FBG sensor array system, a source emits a light covering a selected wavelength range. The light is amplified and then used to generate a series of pulses that are fed into an array of sensor gratings. The propagation of a pulse through the sensor array results in a time-domain-multiplexed output, comprising a series of output pulses in which each output pulse comprises a reflection of the input pulse at a respective grating in the sensor array. Raman amplification is used to amplify both the pulse input into and the time-domain multiplexed output from the sensor array, which is then coupled into an output processing stage for receiving the sensor output and for reconstructing the wavelength output of each grating in the sensor array. The wavelength change for each grating is then used to calculate a physical parameter(s) to be measured, such as temperature and/or strain.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: September 12, 2017
    Assignee: OFS FITEL, LLC
    Inventors: William R Holland, Yaowen Li, Jeffrey W Nicholson, Yingzhi Sun, Benyuan Zhu
  • Patent number: 9759913
    Abstract: A transparent waveguide for use in eye tracking includes an input-coupler and an output-coupler. The input-coupler comprises a plurality of curved grating lines having a radially varying pitch. When positioned in front of an eye illuminated with infrared light, infrared light beams reflected from the eye and incident on the input-coupler enter the waveguide at the input-coupler, propagate through the waveguide by way of total internal reflections, and exit the waveguide proximate the output-coupler.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: September 12, 2017
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Pasi Saarikko, Xinye Lou, Scott McEldowney, Steven Robbins
  • Patent number: 9753297
    Abstract: A first optical arrangement is configured to couple into an apparatus a first component of a light beam having a wavelength within a first spectral range; a second optical arrangement configured to couple a second component of the light beam having a wavelength within a different second spectral range; a third optical arrangement configured to expand the first component in a first dimension to create an expanded first component; a fourth optical arrangement configured to expand, in a second dimension, the expanded first component to create a further expanded first component, and to output the further expanded first component; a fifth optical arrangement configured to expand the second component in the second dimension to create an expanded second component; and a sixth optical arrangement configured to expand, in the first dimension, the expanded second component to create a further expanded second component, and to output the further expanded second component.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: September 5, 2017
    Assignee: Nokia Corporation
    Inventor: Pasi Saarikko
  • Patent number: 9753227
    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: March 29, 2016
    Date of Patent: September 5, 2017
    Assignee: International Business Machines Corporation
    Inventor: Yoichi Taira
  • Patent number: 9755738
    Abstract: An optical device includes an optical port array having first and second optical inputs for receiving optical beams and a first plurality of optical outputs associated with switching functionality and a second plurality of optical outputs associated with channel monitoring functionality. A dispersion element receives the optical beam from an input and spatially separates the beam into a plurality of wavelength components. The focusing element focuses the wavelength components. The optical path conversion system receives the plurality of wavelength components and selectively directs each one to a prescribed one of the optical ports. The photodetectors are each associated with one of the optical outputs in the second plurality of optical outputs and receive a wavelength component therefrom. The controller causes the optical path conversion system to simultaneously direct each of the wavelength components to a different one of the optical outputs of the second plurality of optical outputs.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: September 5, 2017
    Assignee: Nistica, Inc.
    Inventor: Jefferson L. Wagener
  • Patent number: 9739957
    Abstract: An optical device for implementing passive alignment of parts and a method therefor, more particularly an optical device and a method therefor that utilize an alignment reference part arranged on the substrate to passively align an optical element part with a lens-optical fiber connection part. For the passive alignment of parts, connection pillars of an alignment reference part are coupled to substrate holes, one or more light-emitting elements and one or more light-receiving elements are aligned in a row in a particular interval with respect to alignment holes arranged opposite each other in the alignment reference part, a lens-optical fiber connection part is aligned with respect to the alignment holes, and an optical fiber is aligned with the optical alignment point at a surface of a prism forming a portion of the lens-optical fiber connection part.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: August 22, 2017
    Assignee: UNIVE CO., LTD.
    Inventors: Yung Sung Son, Sang-Shin Lee, Hak-Soon Lee, Jun-Young Park
  • Patent number: 9709882
    Abstract: There is provided a light source apparatus and projector having the light source apparatus, said light source apparatus comprising: a laser module where first semiconductor laser(s) and second semiconductor laser(s) which emits a light of the wavelength different from that of said first semiconductor laser(s) are placed such that the emitting direction of each semiconductor laser is approximately the same and a short axis direction of a far field pattern of each semiconductor laser is approximately the same, and an optical multiplexing component which a light which exits from said laser module enters without being converged, wherein said first semiconductor laser(s) and said second semiconductor laser(s) are placed in linear symmetry in said short axis direction at the exit surface of said laser module.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: July 18, 2017
    Assignee: NICHIA CORPORATION
    Inventors: Seiji Nagahara, Takashi Sasamuro
  • Patent number: 9684190
    Abstract: Embodiments of the invention describe systems, apparatuses and methods for providing athermicity and a tunable spectral response for optical filters. Finite impulse response (FIR) filters are commonly implemented in photonic integrated circuits (PICs) to make devices such as wavelength division multiplexing (WDM) devices, asymmetric Mach-Zehnder interferometers (AMZIs) and array waveguide gratings (AWGs). Athermicity of an FIR filter describes maintaining a consistent frequency transmission spectrum as the ambient temperature changes. A tunable spectral response for an FIR filter describes changing the spectrum of an FIR filter based on its application, as well as potentially correcting for fabrication deviations from the design. In addition, embodiments of the invention reduce energy dissipation requirements and control complexity compared to prior art solutions.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: June 20, 2017
    Assignee: Aurrion, Inc.
    Inventors: Jonathan Edgar Roth, Daniel Knight Sparacin, Gregory Alan Fish
  • 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