Planar Optical Waveguide Patents (Class 385/129)
  • Patent number: 9869809
    Abstract: Sufficiently sharp directivity can be secured with a simple configuration in a configuration that improves the efficiency of utilizing the light exiting from a primary light source using a reflective polarizing plate. A backlight unit (2) supplies light exiting from an exit surface of a light guide plate (12) to a liquid-crystal display panel (3) via a reflective polarizing plate (16) after correcting directivity of the exiting light using a prism sheet (14) having a downwardly convex shape. A ¼-wavelength plate (15) is provided between the prism sheet (14) and the reflective polarizing plate (16), between the prism sheet (14) and the light guide plate, or between the light guide plate and a reflective sheet disposed on a surface of the light guide plate opposite to the prism sheet (14).
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: January 16, 2018
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Keiji Kashima, Yasuki Suzuura, Hiroshi Yamamoto, Takashi Kuroda
  • Patent number: 9869816
    Abstract: Provided is a light combining/dividing element which allows generation of reflected light to be suppressed, as compared with a conventional light combining/dividing element. A core of the light combining/dividing element includes an MMI part which is connected to a first core and to each of a second core and a third core. A width of a rib of a rib waveguide of the MMI part becomes narrower from a width equal to that of a channel waveguide to a width equal to that of the first core.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: January 16, 2018
    Assignee: FUJIKURA LTD.
    Inventors: Norihiro Ishikura, Kazuhiro Goi
  • Patent number: 9862151
    Abstract: A structure including a hollow porous material with an architected fluid interface to the hollow porous material and methods of forming the same. The architected fluid interface may be in the form of a manifold with tapered openings, each providing a gradually narrowing transition to the hollow channels within which fluid may flow through the hollow porous material. The material may be formed by forming an open-celled sacrificial scaffold, immersing one surface of the open-celled sacrificial scaffold in a bonding agent, attaching a face sheet to the surface to form a sacrificial scaffold assembly, coating the assembly with a coating material, and removing the sacrificial scaffold assembly.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: January 9, 2018
    Assignee: HRL Laboratories, LLC
    Inventors: Kevin J. Maloney, Christopher S. Roper
  • Patent number: 9810828
    Abstract: A liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes a light guide plate, an LED, and a wavelength converter between the light guide plate and the LED. The wavelength converter includes semiconductor quantum dots in a supporter, to which a reflection film is applied except surfaces that face the LED and the light guide plate.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: November 7, 2017
    Assignee: Japan Display Inc.
    Inventors: Hirohisa Miki, Shigesumi Araki
  • Patent number: 9811211
    Abstract: A position sensor includes: a sheet-form optical waveguide including a sheet-form under cladding layer, a plurality of linear cores arranged in a lattice form and formed on a surface of the under cladding layer, and a sheet-form over cladding layer covering the cores; a light-emitting element connected to one end surface of the cores; and a light-receiving element connected to the other end surface of the cores. The cores have an elasticity modulus higher than that of the under cladding layer and that of the over cladding layer. The deformation rate of a cross section of the cores as seen in a pressed direction is lower than the deformation rates of cross sections of the over cladding layer and the under cladding layer when a surface of the sheet-form optical waveguide is pressed.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: November 7, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Yusuke Shimizu, Ryoma Yoshioka
  • Patent number: 9810864
    Abstract: An optical fiber component includes an optical fiber array and at least one fiber lid. The optical fiber array has a plurality of individual optical fibers extending between a first end and an opposing second end. The fiber lid has a first surface and an opposing second surface. A portion of the second surface is attached to a portion of the optical fiber array adjacent the second end so as to partially define an adhesion region of the optical fiber component and a compliance region of the fiber pigtail assembly to enable high-yield fiber re-alignment in grooves.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: November 7, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Tymon Barwicz, Nicolas Boyer, Paul F. Fortier, Alexander Janta-Polczynski
  • Patent number: 9806485
    Abstract: Examples of the present invention include integrated erbium-doped waveguide lasers designed for silicon photonic systems. In some examples, these lasers include laser cavities defined by distributed Bragg reflectors (DBRs) formed in silicon nitride-based waveguides. These DBRs may include grating features defined by wafer-scale immersion lithography, with an upper layer of erbium-doped aluminum oxide deposited as the final step in the fabrication process. The resulting inverted ridge-waveguide yields high optical intensity overlap with the active medium for both the 980 nm pump (89%) and 1.5 ?m laser (87%) wavelengths with a pump-laser intensity overlap of over 93%. The output powers can be 5 mW or higher and show lasing at widely-spaced wavelengths within both the C- and L-bands of the erbium gain spectrum (1536, 1561 and 1596 nm).
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: October 31, 2017
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Purnawirman Purnawirman, Michael R. Watts, Ehsan Shah Hosseini, Jonathan B. Bradley, Jie Sun, Matteo Cherchi
  • Patent number: 9799698
    Abstract: A solid-state imaging device includes: a pixel region in which a plurality of pixels composed of a photoelectric conversion section and a pixel transistor is arranged; an on-chip color filter; an on-chip microlens; and a multilayer interconnection layer in which a plurality of layers of interconnections is formed through an interlayer insulating film. The solid-state imaging device further includes a light-shielding film formed through an insulating layer in a pixel boundary of a light receiving surface in which the photoelectric conversion section is arranged.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: October 24, 2017
    Assignee: Sony Corporation
    Inventors: Kazufumi Watanabe, Yasushi Maruyama
  • Patent number: 9791621
    Abstract: A method for fabricating an integrated semiconductor photonics device is disclosed. The method may include providing a first substrate having on its top surface a monocrystalline semiconductor layer suitable for supporting an optical mode and forming a homogenous and conformal first dielectric layer on a planar surface of the monocrystalline semiconductor layer. The method may further include providing a dielectric waveguide core on the first dielectric layer, the dielectric waveguide core optically coupled to a first region of the monocrystalline semiconductor layer through the first dielectric layer. The method may further include depositing a second dielectric layer on the dielectric waveguide core, thereby covering the dielectric waveguide core, and annealing the substrate to drive hydrogen out of the dielectric waveguide core.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: October 17, 2017
    Assignee: IMEC VZW
    Inventors: Philippe Absil, Shankar Kumar Selvaraja
  • Patent number: 9784915
    Abstract: A cross-shaped infrared polarized light bridge based on a photonic crystal waveguide. The present invention aims to provide a polarized light bridge that is small in structural size, high in polarization degree, convenient to integrate, and highly efficient, besides which, crosstalk is not caused at a cross intersection. The cross-shaped infrared polarized light bridge comprises a photonic crystal waveguide provided with a complete bandgap. The photonic crystal waveguide is in a cross shape. Waveguide defect dielectric columns are disposed in the photonic crystal cross-shaped waveguide. The waveguide defect dielectric columns are square defect dielectric columns (6) and round defect dielectric columns (7). The photonic crystal cross-shaped waveguide comprises a vertical TE waveguide, a horizontal TM waveguide, a TM optical signal input port (1), a TM output port (3), a TE optical signal input port (2), and a TE output port (4).
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: October 10, 2017
    Inventor: Zhengbiao Ouyang
  • Patent number: 9765178
    Abstract: Technologies are generally described for fabricating a self-writing waveguide. Two photo-reactive liquid monomers, each infused with a photo-initiator, may be mixed and dissolved in a carrier solvent to form a mixture. Nanoparticles may be added to the mixture to form a gel. A focused light beam may be provided to cure one of the monomers, initiating polymerization to form a core of the self-writing waveguide. An optional exposure to an optical source, a heat source, or an electron beam source may cure the other monomer, initiating polymerization to form a cladding of the self-writing waveguide. The self-writing waveguide may be formed in a substantially tubular structure or a planar film structure.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: September 19, 2017
    Assignee: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventors: Gary L. Duerksen, Seth Adrian Miller
  • Patent number: 9759646
    Abstract: The present invention relates to a system for detecting deposits or chemical inhibitor close to or on the surface of electrodes or pins facing a fluid flow where any combination of the components oil, water, gas and a chemical inhibitor fluid could be present, and where the electrodes or pins are coupled to measuring means for monitoring the electrical characteristics of the flow, the electrical characteristics including the complex impedance or complex permittivity. The system comprises detecting means transmitting a signal indicating presence of deposit or chemical inhibitor if the real part of the complex impedance, in case of hydrocarbon continuous flow, or the imaginary part of the complex impedance, in case of water continuous flow deviates from predetermined limits related to the electrical characteristics of the said flow.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: September 12, 2017
    Assignee: Roxar Flow Measurement AS
    Inventor: Dimitrios Oikonomou
  • Patent number: 9753210
    Abstract: An optical waveguide body includes a first layer of optically transmissive material and a second layer of optically transmissive material in contact with the first layer. At least one of the first and second layers is tapered and the first layer has a first index of refraction and the second layer has a second index of refraction less than the first index of refraction and the first and second indices of refraction are both greater than about 1.0.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: September 5, 2017
    Assignee: Cree, Inc.
    Inventor: John W. Durkee
  • Patent number: 9746378
    Abstract: Terahertz spectrometer having a wider range of terahertz radiation source, high temporal resolution of scanning (<0.0.099 ?m or ˜0.3 pico second) over a wider range of scanning (up to ˜100 pico seconds). Also disclosed are exemplary applications of the spectrometer in biomedical, biological, pharmaceutical, and security areas.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: August 29, 2017
    Assignee: Applied Research and Photonics, Inc.
    Inventor: Anis Rahman
  • Patent number: 9733773
    Abstract: A touch panel is provided. The touch panel includes a cover plate and a display element under the cover plate. A touch sensing layer is disposed at an active area of the touch panel and between the cover plate and the display element. A decorative layer is disposed at a peripheral area of the touch panel and between the cover plate and the display element, wherein the active area is surrounded by the peripheral area. The touch panel further includes a dielectric layer disposed between the cover plate and the display element, wherein the difference in reflectivity between the active area and the peripheral area is 0 to 0.5.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: August 15, 2017
    Assignee: INNOLUX CORPORATION
    Inventors: Cho-Hao Yang, Bo-Yu Chen, Jian-Hua Luo, Jia-Hsin Li, I-An Yao
  • Patent number: 9734952
    Abstract: A solid electrolytic capacitor that comprises a sintered porous anode, a dielectric layer that overlies the anode body, and a solid electrolyte overlying the dielectric layer is provided. The solid electrolyte comprises a conductive polymer and a nonionic surfactant having a hydrophilic/lipophilic balance (“HLB”) of from about 10 to about 20 and a molecular weight of from about 100 to about 10,000 grams per mole. The nonionic surfactant has a hydrophobic base and a hydrophilic chain that contains alkoxy moieties.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: August 15, 2017
    Assignee: AVX Corporation
    Inventors: Jan Petrzilek, Martin Biler
  • Patent number: 9726783
    Abstract: Methods and systems for thermal printing of thermally printable photonic crystal materials and assemblies. The photonic crystal materials and assemblies are responsive to thermal stimuli, wherein temperatures above a thermal threshold results in an optically detectable change in the appearance of the materials and assemblies. Heat is selectively applied to one or more portions of the materials and assemblies, in order to thermally print a graphic onto the materials and assemblies.
    Type: Grant
    Filed: May 28, 2012
    Date of Patent: August 8, 2017
    Assignee: OPALUX INCORPORATED
    Inventors: Romain Perrier-Cornet, Andre Arsenault
  • Patent number: 9722706
    Abstract: A transmitter assembly incorporating multiple laser diodes that are wavelength multiplexed together using a planar lightwave circuit, and where the multiplexer's transmission spectrum depends on temperature at the same rate as the laser diodes. This allows a design for lower loss in the multiplexer and therefore is more power efficient.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: August 1, 2017
    Assignee: KAIAM CORP.
    Inventors: Alice Liu, Bardia Pezeshki, John Heanue, Henk Bulthuis
  • Patent number: 9715064
    Abstract: Disclosed are multi-chip modules (MCMs) that allow for chip-to-chip transmission of light signals. The MCMs can incorporate at least two components, which are attached (e.g., by interconnects). For example, in one MCM disclosed herein, the two components can be an integrated circuit chip and an interposer to which the integrated circuit chip and one or more additional integrated circuit chips are attached by interconnects. In another MCM disclosed herein, the two components can be two integrated circuit chips that are stacked and attached to each other by interconnects. In either case, the two components can each have a waveguide and a grating coupler coupled to one end of the waveguide. The grating couplers on the different components can be approximately vertically aligned, thereby allowing light signals to be transmitted between the waveguides on those different components. Also, disclosed herein are methods of forming such MCMs.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: July 25, 2017
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Jeffrey P. Gambino, Robert K. Leidy, John J. Ellis-Monaghan, Brett T. Cucci, Jeffrey C. Maling, Jessie C. Rosenberg
  • Patent number: 9715072
    Abstract: The invention relates to an optical coupler (10) in a vertical configuration, comprising a first waveguide (12) and a second waveguide (14). The optical coupler (10) comprises a third waveguide (16) distinct from the first and second waveguides (12, 14) and extending parallel to the first and second waveguides (12, 14), the third waveguide (16) being arranged between the first waveguide (12) and the second waveguide (14) in a transverse direction (X) perpendicular to the longitudinal direction (Z) and having parameters influencing the evanescent wave coupling between the first waveguide (12) and the second waveguide (14), those parameters being chosen such that the coupling (C) is greater than 15%.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: July 25, 2017
    Assignee: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
    Inventors: Pierre Labeye, Salim Boutami, Mickaël Brun, Sergio Nicoletti
  • Patent number: 9709720
    Abstract: The topology of the elements of a metamaterial can be engineered from its desired electromagnetic constitutive tensor using an inverse group theory method. Therefore, given a desired electromagnetic response and a generic metamaterial elemental design, group theory is applied to predict the various ways that the element can be arranged in three dimensions to produce the desired functionality. An optimizer can then be applied to an electromagnetic modeling tool to fine tune the values of the electromagnetic properties of the resulting metamaterial topology.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: July 18, 2017
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Ihab F. El-Kady, Charles M. Reinke
  • Patent number: 9711662
    Abstract: Integrated circuits and methods of producing such integrated circuits are provided. In an exemplary embodiment, a method of producing an integrated circuit includes forming an upper interlayer dielectric overlying an optical modulator and a photodetector, where the photodetector has a shoulder and a plug. An etch stop is formed overlying the upper interlayer dielectric. The etch stop is a first, second, and third distance from an uppermost surface of the optical modulator, the shoulder, and the plug, respectively, where the first, second, and third distances are all different from each other. A first, second, and third contact are formed through the upper interlayer dielectric, where the first, second and third contacts are in electrical communication with the optical modulator, the shoulder, and the plug, respectively.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: July 18, 2017
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Shunqiang Gong, Benfu Lin, Juan Boon Tan, Ramakanth Alapati
  • Patent number: 9709741
    Abstract: An apparatus comprises a substrate comprising a silicon dioxide (SiO2) material disposed on top of the substrate, a silicon waveguide comprising a first adiabatic tapering and enclosed in the silicon dioxide material, and a low-index waveguide disposed on top of the substrate and adjacent to the first adiabatic tapering. A mode converter fabrication method comprises obtaining a mode converter comprising a substrate, a silicon waveguide disposed on the substrate and comprising a sidewall and a first adiabatic tapering, and a hard mask disposed on the silicon waveguide and comprising a silicon dioxide (SiO2) layer, wherein the hard mask does not cover the sidewall, and oxidizing the silicon waveguide and the hard mask, wherein oxidizing the silicon waveguide and the hard mask encloses the silicon waveguide within the silicon dioxide layer.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: July 18, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Li Yang, Huapu Pan, Qianfan Xu, Dawei Zheng, Xiao Shen
  • Patent number: 9709699
    Abstract: An optical component, for example a lens, integrally formed of a nano/nano class nanocomposite optical ceramic (NNCOC) material. The constituent nanograin materials of the NNCOC material are selected to tailor the thermal and optical properties of the lens so as to provide a lens with a substantially constant focal length over an operating temperature range and/or an optical system in which the image position does not change appreciably over the operating temperature range.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: July 18, 2017
    Assignee: RAYTHEON COMPANY
    Inventors: Wayne L. Sunne, Jacob A. Hanson, Eric C. Fest, Ronald L. Roncone
  • Patent number: 9704473
    Abstract: An embodiment is a variable acoustic grating. Each of the local grating structures in an array of local grating structures has a variable impedance such that the impedance is modified, steering an ultrasonic signal impinging on the array in a reflection or transmission mode through a medium.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: July 11, 2017
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: Serena Han Ying Wong, Jeng Ping Lu, Raj B. Apte
  • Patent number: 9696492
    Abstract: A radio-frequency photonic devices employs photon-phonon coupling for information transfer. The device includes a membrane in which a two-dimensionally periodic phononic crystal (PnC) structure is patterned. The device also includes at least a first optical waveguide embedded in the membrane. At least a first line-defect region interrupts the PnC structure. The first optical waveguide is embedded within the line-defect region.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: July 4, 2017
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Jonathan Albert Cox, Robert L. Jarecki, Jr., Peter Thomas Rakich, Zheng Wang, Heedeuk Shin, Aleem Siddiqui, Andrew Lea Starbuck
  • Patent number: 9698564
    Abstract: A multi-chip module (MCM) includes: an interposer, a photonic chip, an optical gain chip, and a waveguide-fiber connector. The photonic chip, which may be electrically coupled to the interposer, may be implemented using a silicon-on-insulator (SOI) technology, and may include an optical waveguide that conveys an optical signal. Moreover, the optical gain chip, which may be electrically coupled to the interposer, may include a III-V compound semiconductor, and may include a second optical waveguide that conveys the optical signal and that is vertically aligned with the optical waveguide relative to a top surface of the interposer. Furthermore, the waveguide-fiber connector may be mechanically coupled to the interposer, and remateably mechanically coupled to an optical fiber coupler that includes the optical fiber. The waveguide-fiber connector may convey the optical signal between the optical waveguide in the photonic chip and the optical fiber.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: July 4, 2017
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Ivan Shubin, Xuezhe Zheng, Jin-Hyoung Lee, Ashok V. Krishnamoorthy
  • Patent number: 9686857
    Abstract: An opto-electric hybrid module is provided. In the opto-electric hybrid module, a core and an electric circuit including electric circuit body portions and mounting pads are provided on a surface of an under-cladding layer of an optical waveguide. An optical element is mounted on the mounting pads with its electrodes in abutment against the mounting pads. The core is covered with the over-cladding layer, and a center portion of the optical element is positioned above a portion of the over-cladding layer covering a top surface of the core. A portion of the electric circuit excluding the mounting pads and a surface portion of the under-cladding layer present between the electric circuit body portions of the electric circuit and present between the electric circuit body portion and the mounting pad are covered with a core material layer formed of the same material as the core.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: June 20, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Naoyuki Tanaka, Yasuto Ishimaru
  • Patent number: 9671575
    Abstract: An optical waveguide device includes a wiring board; an optical waveguide having a first cladding layer, a core layer and a second cladding layer formed in this order on the wiring board; an optical path conversion mirror formed in the core layer; and an optical element mounted on the second cladding layer, the optical element comprising a light emitting portion or a light receiving portion protruding from a lower side thereof. The second cladding layer has an opening formed above the optical path conversion mirror. The optical element is mounted on the second cladding layer so that at least one end thereof is positioned above the opening of the second cladding layer. The light emitting portion or light receiving portion of the optical element is arranged the opening of the second cladding layer.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: June 6, 2017
    Assignee: SHINKO ELECTRIC INDUSTRIES CO., LTD.
    Inventor: Kazunao Yamamoto
  • Patent number: 9657484
    Abstract: Various embodiments are described that relate to a rapid deployment communications tile. As opposed to running various data and/or power wires, a construction crew can use set of tiles that have built in data and/or power transmission capabilities. These tiles can be keyed such that they interlock together to form a relatively uniform surface, such that the surface can also be used as a floor. Further, the tiles can have hardware components that enable the data and/or power transmission capabilities. These hardware components can be environmentally protected such that their performance is not subject to environmental factors.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: May 23, 2017
    Assignee: The United States of America, as represented by the Secretary of the Army
    Inventors: Matthew Lazzaro, William Toth
  • Patent number: 9651748
    Abstract: An optical module includes: an optical/electrical composite board including: a wiring board; an optical waveguide disposed on the wiring board; and a first optical path changing portion disposed at one end portion of the optical waveguide, a lens component including a lens configured to collect the light emitted from the optical path changing portion; and a fixation member fixed to the optical/electrical composite board. A through hole is formed through the lens component. The lens component is disposed on the optical/electrical composite board such that the fixation member is disposed in the through hole. A resin portion is provided in the through hole such that the fixation member is embedded in the resin portion.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: May 16, 2017
    Assignee: SHINKO ELECTRIC INDUSTRIES CO., LTD.
    Inventor: Kenji Yanagisawa
  • Patent number: 9651747
    Abstract: An optical fiber component includes an optical fiber array and at least one fiber lid. The optical fiber array has a plurality of individual optical fibers extending between a first end and an opposing second end. The fiber lid has a first surface and an opposing second surface. A portion of the second surface is attached to a portion of the optical fiber array adjacent the second end so as to partially define an adhesion region of the optical fiber component and a compliance region of the fiber pigtail assembly to enable high-yield fiber re-alignment in grooves.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: May 16, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Tymon Barwicz, Nicolas Boyer, Paul F. Fortier, Alexander Janta-Polczynski
  • Patent number: 9647025
    Abstract: A solid-state imaging device includes: a pixel region in which a plurality of pixels composed of a photoelectric conversion section and a pixel transistor is arranged; an on-chip color filter; an on-chip microlens; and a multilayer interconnection layer in which a plurality of layers of interconnections is formed through an interlayer insulating film. The solid-state imaging device further includes a light-shielding film formed through an insulating layer in a pixel boundary of a light receiving surface in which the photoelectric conversion section is arranged.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: May 9, 2017
    Assignee: Sony Corporation
    Inventors: Kazufumi Watanabe, Yasushi Maruyama
  • Patent number: 9645045
    Abstract: Probe beams are scanned with respect to waveguide substrates to generate optical harmonics. Detection of the optical harmonic radiation is used to image waveguide cores, claddings, or other structures such as electrodes. The detected optical radiation can also be used to provide estimates of linear electrooptic coefficients, or ratios of linear electrooptic coefficients. In some cases, the poling of polymer waveguide structures is monitored during fabrication based on a second harmonic of the probe beam. In some examples, third harmonic generation is used for imaging of conductive layers.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: May 9, 2017
    Assignee: The Arizona Board of Regents on Behalf of the University of Arizona
    Inventors: Robert A. Norwood, Khanh Q. Kieu, Roland Himmelhuber
  • Patent number: 9632263
    Abstract: In an opto-electric hybrid board according to the present invention, an electrical interconnect line and an optical element are provided on a first surface of a substrate, and an optical waveguide optically coupled to the optical element is provided on a second surface of the substrate. A reinforcement layer for reinforcing the substrate is integrally mounted on the first surface of the substrate on which the electrical interconnect line and the optical element are provided, with an adhesive layer therebetween. A connector pad part for externally electrically connecting the electrical interconnect line is provided on the second surface of the substrate on which the optical waveguide is provided. With this configuration, the reinforcement layer is mounted on the substrate with high strength without adverse effects exerted on the optical element and the optical waveguide.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: April 25, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Naoki Shibata, Yuichi Tsujita
  • Patent number: 9618531
    Abstract: Technologies are generally described for operating and manufacturing optomechanical accelerometers. In some examples, an optomechanical accelerometer device is described that uses a cavity resonant displacement sensor based on a zipper photonic crystal nano-cavity to measure the displacement of an integrated test mass generated by acceleration applied to the chip. The cavity-resonant sensor may be fully integrated on-chip and exhibit an enhanced displacement resolution due to its strong optomechanical coupling. The accelerometer structure may be fabricated in a silicon nitride thin film and constitute a rectangular test mass flexibly suspended on high aspect ratio inorganic nitride nano-tethers under high tensile stress. By increasing the mechanical Q-factors through adjustment of tether width and tether length, the noise-equivalent acceleration (NEA) may be reduced, while maintaining a large operation bandwidth. The mechanical Q-factor may be improved with thinner (e.g., <1 micron) and longer tethers (e.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: April 11, 2017
    Assignees: CALIFORNIA INSTITUTE OF TECHNOLOGY, UNIVERSITY OF ROCHESTER
    Inventors: Oskar Painter, Martin Winger, Qiang Lin, Alexander Krause, Tim D. Blasius
  • Patent number: 9610754
    Abstract: A method and apparatus of fabrication of a multilayer flexible metamaterial can be fabricated using flip chip transfer (FCT) technique. This technique is different from other similar techniques such as metal lift off process, which fabricates the nanostructures directly onto the flexible substrate or nanometer printing technique. It is a solution-free FCT technique using double-side optical adhesive as the intermediate transfer layer and a tri-layer metamaterial nanostructures on a rigid substrate can be transferred onto adhesive first. Another embodiment of the present invention is the fabrication method and apparatus that allows the transfer of the metamaterial from a rigid substrate such as glass, quartz and metals onto a flexible substrate such as plastic or polymer film. Thus, a flexible metamaterial can be fabricated independent of the original substrate used.
    Type: Grant
    Filed: December 23, 2012
    Date of Patent: April 4, 2017
    Assignee: Hong Kong Baptist University
    Inventors: Kok Wai Cheah, Guixin Li
  • Patent number: 9609780
    Abstract: The invention relates to an optoelectronic sensor, in particular to a light grid (10), having at least two circuit boards (19, 19-x) which are to be arranged one after the other in a longitudinal direction (16, z direction) and on which a plurality of light transmitters (18) and/or light receivers (20) are arranged in series, wherein the circuit boards (19-1, 19-2) are fixed in a desired position with respect to one another by a functional element (34) and wherein the circuit boards (19-1, 19-2) are held in a housing (12).
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: March 28, 2017
    Assignee: SICK AG
    Inventors: Johannes Eble, Sebastian Matt, Gerhard Alt, Jürgen Bürger
  • Patent number: 9594213
    Abstract: A method of forming an optical device includes using a photomask to form a first mask on a device precursor. The method also includes using the photomask to form a second mask on the device precursor. The second mask is formed after the first mask. In some instances, the optical device includes a waveguide positioned on a base. The waveguide is configured to guide a light signal through a ridge. A heater is positioned on the ridge such that the ridge is between the heater and the base.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: March 14, 2017
    Assignee: Mellanox Technologies Silicon Photonics Inc.
    Inventors: Wei Qian, Dazeng Feng, Cheng-Chih Kung, Jay Jie Lai
  • Patent number: 9588294
    Abstract: Forming an optical device includes growing an electro-absorption medium in a variety of different regions on a base of a device precursor. The regions include a component region and the regions are selected so as to achieve a particular chemical composition for the electro-absorption medium included in the component region. An optical component is formed on the device precursor such that the optical component includes at least a portion of the electro-absorption medium from the component region. Light signals are guided through the electro-absorption medium from the component region during operation of the component.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: March 7, 2017
    Assignee: Mellanox Technologies Silicon Photonics Inc.
    Inventors: Joan Fong, Wei Qian, Dazeng Feng, Mehdi Asghari
  • Patent number: 9588395
    Abstract: A planar optical waveguide circuit includes an optical modulator, such as that based on a Mach-Zehnder interferometer, that is followed by an in-line optical tap in the form of a 2×2 multi-mode interference coupler that is characterized a reduced tracking error as compared to Y-junction couplers.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: March 7, 2017
    Assignee: Lumentum Operations LLC
    Inventors: Charles M. Jewart, Karl Kissa
  • Patent number: 9575251
    Abstract: A standard-CMOS-process-compatible optical mode converter transitions an optical mode size using a series of adjacent regions having different optical mode sizes. In particular, in a partial-slab-mode region, which is adjacent to an initial rib-optical-waveguide-mode region, a width of a slab portion of the rib-type optical waveguide decreases and a width of a rib portion of the rib-type optical waveguide decreases to a first minimum tip size. Then, in a slab-mode region, which is adjacent to the partial-slab-mode region, the width of the slab portion decreases to a second minimum tip size. In addition, a dielectric layer is disposed over the slab portion, the rib portion and the BOX layer in the partial-slab-mode region, the slab portion and the BOX layer in the slab-mode region, and the BOX layer in a released-mode region that is adjacent to the slab-mode region and that does not include the semiconductor layer.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: February 21, 2017
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Jin-Hyoung Lee, Ivan Shubin, Xuezhe Zheng, Ashok V. Krishnamoorthy
  • Patent number: 9570500
    Abstract: A solid-state imaging device includes: a pixel region in which a plurality of pixels composed of a photoelectric conversion section and a pixel transistor is arranged; an on-chip color filter; an on-chip microlens; and a multilayer interconnection layer in which a plurality of layers of interconnections is formed through an interlayer insulating film. The solid-state imaging device further includes a light-shielding film formed through an insulating layer in a pixel boundary of a light receiving surface in which the photoelectric conversion section is arranged.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: February 14, 2017
    Assignee: Sony Corporation
    Inventors: Kazufumi Watanabe, Yasushi Maruyama
  • Patent number: 9563015
    Abstract: An optical waveguide structure and a manufacturing method thereof are disclosed. The optical waveguide structure has a first waveguide layer, a binding layer, and a second waveguide layer. The first waveguide layer has a taper portion, a connecting portion, and a strip portion. The manufacturing method of the optical waveguide structure has steps of etching to form the first waveguide layer, and then etching to form the second waveguide layer under the first waveguide layer.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: February 7, 2017
    Assignee: National Sun Yat-sen University
    Inventors: Yi-Jen Chiu, Yi-Jhe Chen, Chung-Yi Lin, Wei Lin
  • Patent number: 9557485
    Abstract: An optical manipulator includes a first section for propagating an optical signal with multiple polarization modes including a transverse electric (TE) mode and a transverse magnetic (TM) mode and a second section for propagating separately the TE mode and the TM mode of the optical signal. The optical manipulator also includes a multi-mode interference (MMI) section having a groove with a first refractive index less than a second refractive index of the MMI section. The groove extends along an entire length of the MMI section to partition the MMI section into two connected channels including a first channel and a second channel. The first section is connected to the first channel and the second section is connected to both the first and the second channels.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: January 31, 2017
    Assignees: Mitsubishi Electric Research Laboratories, Inc., Mitsubishi ELecrtic Corporation
    Inventors: Keisuke Kojima, Manuela Felicetti, Toshiaki Koike-Akino, Bingnan Wang, Satoshi Nishikawa, Eiji Yagyu
  • Patent number: 9553239
    Abstract: A light emitting device includes a first conductive-type semiconductor layer laminated on a substrate; a light emitting layer laminated on the first conductive-type semiconductor layer; a second conductive-type semiconductor layer laminated on the light emitting layer; a first ITO layer laminated at a side of the first conductive-type semiconductor layer opposite to the substrate; a second ITO layer laminated at a side of the second conductive-type semiconductor layer opposite to the substrate; a first metal layer laminated on the first ITO layer; and a second metal layer laminated on the second ITO layer. The first and second metal layers have the same structure and each includes a lower metal layer which contacts a corresponding ITO layer of the first ITO layer and the second ITO layer; and an upper metal layer laminated on the lower metal layer, the upper metal layer being thicker than the lower metal layer.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: January 24, 2017
    Assignee: ROHM CO., LTD.
    Inventors: Takao Fujimori, Nobuaki Matsui
  • Patent number: 9547137
    Abstract: An optical coupler integrated on a substrate, that will optically couple a laser and a waveguide and including an external element, including two arms separated by a notch, this notch being delimited laterally by two first walls at a spacing that reduces towards the bottom of the notch; a central element, located in the notch delimited laterally by two second walls and with a first region in which the two second walls are in direct contact with two first walls as far as the bottom of the notch; and an intermediate element, extending between the external element and the central element. The optical index of the central element is greater than the optical index of the intermediate element, itself greater than the optical index of the arms of the external element. Such an optical coupler provides efficient coupling between a laser emitting in the mid-infrared and a waveguide integrated on a substrate.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: January 17, 2017
    Assignee: Commissariat a l'energie atomique et aux energies alternatives
    Inventors: Julien Favreau, Salim Boutami, Mickael Brun
  • Patent number: 9547229
    Abstract: The disclosed embodiments provide systems and methods for mitigating lensing and scattering as an optical fiber is being inscribed with a grating. The disclosed systems and methods mitigate the lensing phenomenon by surrounding an optical fiber with an index-matching material that is held in a vessel with a sealed phase mask. The sealed phase mask allows it to be in contact with a liquid index-matching material without having the liquid index-matching material seep into the grooves of the sealed phase mask. Thus, for some embodiments, the sealed phase mask may be immersed in a liquid index-matching material without adversely affecting the function of the phase mask.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: January 17, 2017
    Assignee: OFS FITEL, LLC
    Inventors: Kenneth S Feder, Paul S Westbrook
  • Patent number: 9529150
    Abstract: Conventional approaches to integrating waveguides within standard electronic processes typically involve using a dielectric layer, such as polysilicon, single-crystalline silicon, or silicon nitride, within the in-foundry process or depositing and patterning a dielectric layer in the backend as a post-foundry process. In the present approach, the back-end of the silicon handle is etched away after in-foundry processing to expose voids or trenches defined using standard in-foundry processing (e.g., complementary metal-oxide-semiconductor (CMOS) processing). Depositing dielectric material into a void or trench yields an optical waveguide integrated within the front-end of the wafer. For example, a shallow trench isolation (STI) layer formed in-foundry may serve as a high-resolution patterning waveguide template in a damascene process within the front end of a die or wafer.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: December 27, 2016
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Jason Scott Orcutt, Karan Kartik Mehta, Rajeev Jagga Ram, Amir Hossein Atabaki
  • Patent number: 9523152
    Abstract: A metallic-dielectric photonic crystal is formed with a periodic structure defining a plurality of resonant cavities to selectively absorb incident radiation. A metal layer is deposited on the inner surfaces of the resonant cavities and a dielectric material fills inside the resonant cavities. This photonic crystal can be used to selectively absorb broadband solar radiation and then reemit absorbed radiation in a wavelength band that matches the absorption band of a photovoltaic cell. The photonic crystal can be fabricated by patterning a sacrificial layer with a plurality of holes, into which is deposited a supporting material. Removing the rest of the sacrificial layer creates a supporting structure, on which a layer of metal is deposited to define resonant cavities. A dielectric material then fills the cavities to form the photonic crystal.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: December 20, 2016
    Assignee: Massachusetts Institute of Technology
    Inventors: Jeffrey Brian Chou, Sang-Gook Kim