Planar Optical Waveguide Patents (Class 385/129)
  • Patent number: 10101535
    Abstract: Waveguide connectors include a ferrule having first alignment features. A waveguide has one or more a topclad portions, each with a waveguide core, second alignment features fastened to the first alignment features, and underclad portion that is thicker than the one or more topclad portions.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: October 16, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Tymon Barwicz, Hidetoshi Numata, Yoichi Taira
  • Patent number: 10101528
    Abstract: A photonic integrated circuit includes an optical coupling device situated between two successive interconnection metal levels. The optical coupling device includes a first optical portion that receives an optical signal having a transverse electric component in a fundamental mode and a transverse magnetic component. A second optical portion converts the transverse magnetic component of the optical signal into a converted transverse electric component in a higher order mode. A third optical portion separates the transverse electric component from the converted transverse electric component and switches the higher order mode to the fundamental mode. A fourth optical portion transmits the transverse electric component to one waveguide and transmits the converted transverse electric component to another waveguide.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: October 16, 2018
    Assignee: STMicroelectronics (Crolles 2) SAS
    Inventors: Sylvain Guerber, Charles Baudot, Florian Domengie
  • Patent number: 10095082
    Abstract: The present invention discloses a TEOS with a high extinction ratio based on slab PhCs which comprises an upper slab PhC and a lower slab PhC connected as a whole; the upper slab PhC is a first square-lattice slab PhC, the unit cell of the first square-lattice slab PhC includes a high-refractive-index rotating-square pillar, three first flat dielectric pillars and a background dielectric, the first flat dielectric pillars include a high-refractive-index dielectric pipe and a low-refractive-index dielectric, or 1 to 3 high-refractive-index flat films, or a low-refractive-index dielectric; the lower slab PhC is a second square-lattice slab PhC with a complete bandgap, the unit cell of the second square-lattice slab PhC includes a high-refractive-index rotating-square pillar, three second flat dielectric pillars and a background dielectric is a low-refractive-index dielectric; and an normalized operating frequency of the TEOS is 0.4057 to 0.406.
    Type: Grant
    Filed: June 18, 2017
    Date of Patent: October 9, 2018
    Inventor: Zhengbiao Ouyang
  • Patent number: 10088450
    Abstract: Areas having different isotopic ratios are artificially introduced into a metal material before sintering, a heat treatment, or grain boundary diffusion, and atom probe analysis results before and after sintering, a heat treatment, or grain boundary diffusion are compared to evaluate a change in isotopic distribution over time.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: October 2, 2018
    Assignee: HITACHI, LTD.
    Inventors: Takeshi Nakayama, Masanari Koguchi
  • Patent number: 10088912
    Abstract: A covering film adapted to a keyboard module is provided. The covering film includes a semi-translucent layer. The semi-translucent layer has a plurality of first pressing regions and covers the keyboard module. The first pressing regions are aligned to a plurality of input regions of the keyboard module respectively, and each of the first pressing regions has a patterned indentation. In addition, an electronic device having the covering film is also provided.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: October 2, 2018
    Assignee: COMPAL ELECTRONICS, INC.
    Inventors: Bar-Long Denq, Chun-Ping Li, Chih-Wen Chiang, Chien-Chu Chen
  • Patent number: 10082628
    Abstract: A disclosed optical device includes a first waveguide disposed between a branching portion and a multiplexing portion on a semiconductor substrate, and a second waveguide disposed between the branching portion and the multiplexing portion, the second waveguide being longer than the first waveguide. In the optical device, an optical confinement effect of the first waveguide is greater than an optical confinement effect of the second waveguide, the first waveguide has a curvature with a first curvature radius (Rs), the second waveguide has a curvature with a second curvature radius (Rl), and the first curvature radius is smaller than the second curvature radius.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: September 25, 2018
    Assignee: FUJITSU OPTICAL COMPONENTS LIMITED
    Inventor: Masaki Sugiyama
  • Patent number: 10075189
    Abstract: A system includes an encoding circuit, a line quality monitor circuit, and a controller circuit. The encoding circuit generates a first data signal indicating encoded data using a first forward error correction code. The line quality monitor circuit generates an indication of a line quality of a second data signal using an eye monitor circuit that monitors the second data signal. The controller circuit causes the encoding circuit to generate encoded data in the first data signal using a second forward error correction code in response to a change in the indication of the line quality of the second data signal.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: September 11, 2018
    Assignee: Altera Corporation
    Inventors: Peng Li, Martin Langhammer, Jon Long
  • Patent number: 10073208
    Abstract: In one aspect, a light emitting device comprises a light source, a film-based lightguide with a light emitting region. The film may have a light mixing region positioned between a light input region and the light emitting region. In one aspect a ratio of a length of the light mixing region to a length of the light emitting region is greater than 0.1 in a first plane comprising the thickness direction. In one aspect the light emitting device comprises a guide element having a surface curved in a first plane positioned adjacent the inner surface of the film, wherein the film is folded along the curved surface at a first fold such that the first fold positions a portion of the light mixing region above or below the active area of the display and the light mixing region comprises the first fold.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: September 11, 2018
    Assignee: FLEx Lighting II, LLC
    Inventors: Anthony Nichol, Zane Coleman
  • Patent number: 10052875
    Abstract: Techniques are provided for making a funnel-shaped nozzle in a substrate. The process can include forming a first opening having a first width in a top layer of a substrate, forming a patterned layer of photoresist on the top surface of the substrate, the patterned layer of photoresist including a second opening, the second opening having a second width larger than the first width, reflowing the patterned layer of photoresist to form curved side surfaces terminating on the top surface of the substrate, etching a second layer of the substrate through the first opening in the top layer of the substrate to form a straight-walled recess, the straight-walled recess having the first width and a side surface substantially perpendicular to the top surface of the semiconductor substrate.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: August 21, 2018
    Assignee: FUJIFILM Dimatix, Inc.
    Inventors: Gregory DeBrabander, Mark Nepomnishy
  • Patent number: 10054734
    Abstract: A display may have an array of pixels that display images for a user. The backlight unit may have a light-guide layer. An array of light-emitting diodes may emit light into an edge of the light-guide layer. The light guide layer may overlap a backlight reflector. A quarter wave plate may be interposed between the light guide layer and the backlight reflector. A turning film may be interposed between a lower polarizer in the array of pixels and the light guide layer. The lower polarizer may be a reflective polarizer. Light exiting the upper surface of the turning film may have a dominant polarization. A half wave plate may be used to rotate the dominant polarization into alignment with a pass axis of the reflective polarizer.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: August 21, 2018
    Assignee: Apple Inc.
    Inventors: Yi Huang, Xinyu Zhu, Jun Qi
  • Patent number: 10038107
    Abstract: Semiconducting quantum dots are applied to a fluid. The quantum dots are configured to absorb visible or near infrared light and re-radiate infrared energy that excites a fundamental vibration frequency of the fluid.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: July 31, 2018
    Assignee: The Boeing Company
    Inventor: Minas H. Tanielian
  • Patent number: 10031291
    Abstract: For multi-mode interference (MMI) couplers that have a plurality of input and output ports, e.g. 4×4, a large number of modes may be supported in the multimode region, e.g. >10, as the width of the MMI core grows larger. In order for MMI couplers to form good images, the supported modes preferably have low modal phase error, which can't be achieved using a conventional single layer design. Accordingly, a multi-mode interference (MMI) coupler comprising an MMI core comprising a plurality of waveguide core strips alternating with a plurality of cladding strips solves the aforementioned problems.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: July 24, 2018
    Assignee: Elenion Technologies, LLC
    Inventor: Alexandre Horth
  • Patent number: 10031293
    Abstract: Provided is an optical coupler including a substrate, a buffer layer on the substrate, a ridge waveguide having a first side surface and a second side surface opposed to the first side surface, and a first waveguide disposed adjacent to the second side surface. The first waveguide includes a first body part and a first connecting part extending from one end of the first body part to be inserted in the ridge waveguide. The first connecting part has a width decreasing in the direction away from the second side surface, and the ridge waveguide includes an extension part extending under an upper surface of the buffer layer.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: July 24, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jaegyu Park, Myungjoon Kwack, Jiho Joo, Gyungock Kim
  • Patent number: 10033080
    Abstract: A disclosed electrical cell enables experimental measurements of dielectric properties of an electrochromic material in the radio-frequency range of the electromagnetic spectrum. In an example embodiment, the electrical cell includes a layer of the electrochromic material under test that is sandwiched between a conducting base plane and a microstrip line. The conducting base plane and the microstrip line are electrically connected to a co-planar waveguide configured for application of superimposed DC-bias and RF-probe signals using a conventional probe station and a vector network analyzer. The S-parameters of the electrical cell measured in this manner can then be used, e.g., to obtain the complex dielectric constant of the electrochromic material under test as a function of frequency.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: July 24, 2018
    Assignee: Alcatel Lucent
    Inventors: Senad Bulja, Rose F. Kopf
  • Patent number: 10025159
    Abstract: An output monitoring method for an optical modulator includes: branching light into first and second lights; modulating a phase of the first light within a first waveguide; modulating a phase of the second light within a second waveguide; multiplexing the first and second lights to generate interference light, and outputting the interference light from first and second output ports; detecting a difference or ratio between a portion of the interference light from the first output port and a portion of the interference light from the second output port; and setting an operating point of light based on the detected difference or ratio; and controlling phase modulation of follow-on light that propagates through the first and second waveguides so as to keep the operating point constant.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: July 17, 2018
    Assignee: NEC CORPORATION
    Inventor: Junichi Fujikata
  • Patent number: 10024785
    Abstract: Novel biophotonic phantoms are provided herein that can accurately mimic the optical properties of living tissue. The disclosed biophotonic phantoms comprise hemoglobin (Hb) in a native conformation that is distributed in a solid polymer matrix. Methods of producing the disclosed biophotonic phantoms are also provided. The biophotonic phantoms can be used, for example, to calibrate or test an optical imaging system, such as a near infrared spectroscopy imaging system.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: July 17, 2018
    Assignees: The United States of America, as represented by the Secretary, Department of Health and Human Services, University of Maryland, College Park
    Inventors: Hyounguk Jang, Jianting Wang, Yu Chen, Thomas Joshua Pfefer
  • Patent number: 10012539
    Abstract: Provided are a Bragg grating and a spectroscopy device including the same. The Bragg grating is disposed at each of opposite ends of a resonator for reflecting light of a certain wavelength band and includes a core member extending from a waveguide of the resonator in a lengthwise direction of the waveguide; a plurality of first refractive members protruding from the core member and spaced apart from each other along the lengthwise direction; and a second refractive member filling spaces between the first refractive members and having a refractive index different from a refractive index of the first refractive members.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: July 3, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD., IMEC VZW
    Inventors: Dongho Kim, Jeonghwan Song
  • Patent number: 10007061
    Abstract: A method of fabricating an optical coupling device, comprising forming a waveguide mask layer on a substrate platform, wherein the waveguide mask layer comprises an array of openings comprising a first end and a second end opposite to the first end, immersing the substrate platform into a salt melt comprising ions to form an array of waveguides in the substrate platform through an ion diffusion process, and controlling a rate of immersion such that a diffusion depth of the ions varies as a function of a distance in a direction from the first end to the second end, wherein the array of waveguides extends in the direction from the first end to the second end.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: June 26, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Jia Jiang
  • Patent number: 10008820
    Abstract: Optically pumpable waveguide amplifier with amplifier having tapered input and output. The present invention provides for a optically pumpable waveguide amplification device that includes: a cladding material; a passive optical waveguide embedded in the cladding material that has no optical amplification functionality; and an active optical waveguide having an input portion, a middle portion and an output portion, including: a gain material with a higher refractive index than the passive optical waveguide, wherein the middle portion of the active optical waveguide is embedded in the cladding material, and faces the passive wave guide, such that a lower surface of the middle portion is an upper surface of the passive optical waveguide. There is also provided a device for optically pumpable waveguide amplification and a method for signal radiation amplification.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: June 26, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Gabriele Raino, Ibrahim Murat Soganci
  • Patent number: 9997671
    Abstract: A composite substrate has a carrier and a utility layer. The utility layer is attached to the carrier by means of a dielectric bonding layer and the carrier contains a radiation conversion material. Other embodiments relate to a semiconductor chip having such a composite substrate, a method for producing a composite substrate and a method for producing a semiconductor chip with a composite substrate.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: June 12, 2018
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Johannes Baur, Berthold Hahn, Volker Haerle, Karl Engl, Joachim Hertkorn, Tetsuya Taki
  • Patent number: 9989848
    Abstract: The present invention provides an optical waveguide photosensitive resin composition containing a resin component and a photoacid generator, wherein the photoacid generator has a characteristic property (x) such that an absorption limit (O—O transition energy) calculated based on the shape of an ultraviolet spectrum obtained by spectrometrically analyzing a 0.1 wt % propylene carbonate solution of the photoacid generator by means of an ultraviolet/visible spectrophotometer is 3.5 to 4.1 eV. Where an optical waveguide core layer is formed by using the inventive optical waveguide photosensitive resin composition, for example, the optical waveguide core layer has a lower loss, and is excellent in patternability and reflow resistance.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: June 5, 2018
    Assignee: NITTO DENKO CORPORATION
    Inventors: Tomoyuki Hirayama, Naoya Sugimoto
  • Patent number: 9967049
    Abstract: A transceiver separates wavelength-division-multiplexing (WDM) components into two groups, one of which is more sensitive to temperature than the other group. The temperature-sensitive group of optical components is implemented on a first substrate in the transceiver that has a lower thermo-optic coefficient than a second substrate in the transceiver, which contains the group of optical components that is less temperature sensitive. In particular, the first substrate, which may be glass, may include WDM components that convey optical signals having multiple carrier wavelengths. Moreover, the second substrate, such as a silicon substrate (e.g., a silicon-on-insulator platform), may include multiple parallel optical paths with optical components, in which a given optical path conveys an optical signal having a given carrier wavelength.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: May 8, 2018
    Assignee: Oracle International Corporation
    Inventors: Xuezhe Zheng, Ashok V. Krishnamoorthy
  • Patent number: 9958598
    Abstract: A light source module includes a light guide plate (LGP), at least one light emitting element, a reflector, and a plurality of spacer units. The LGP has a first surface, a second surface opposite to the first surface, a light incident surface connecting the first surface and the second surface, and a plurality of optical microstructures. The light emitting element is located adjacent to the light incident surface. The reflector is adhered to the second surface through an adhesive gel. The spacer units are located between the LGP and the reflector, and sizes of the spacer units are larger than or equal to 1 micrometer. The adhesive gel includes a first adhesive gel and a second adhesive gel. The first adhesive gel is located between the spacer units and the LGP, and the second adhesive gel is located between the spacer units and the reflector.
    Type: Grant
    Filed: March 13, 2016
    Date of Patent: May 1, 2018
    Assignee: Young Lighting Technology Inc.
    Inventors: Hsin-Hung Lee, Yi-Yu Tsai, Chiao-Chih Yang
  • Patent number: 9946016
    Abstract: An apparatus includes a waveguide extending along a light-propagation direction between a light source and a media-facing surface. The waveguide comprises an assistant layer configured to receive light from a light source, truncated with an intermediate bottom cladding layer. A core layer comprises a coupling end configured to receive light from the assistant layer. The coupling end comprises a taper that widens toward the media-facing surface. A near field transducer is disposed proximate the media-facing surface and is configured to receive the light from the core layer.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: April 17, 2018
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Chubing Peng, Pierre Asselin, Lien Lee, Karen V. Rud
  • Patent number: 9944818
    Abstract: Embodiments in accordance with the present invention encompass compositions encompassing components A and B which respectively contain a procatalyst and an activator along with one or more monomers which undergo vinyl addition polymerization when both components are mixed together to form a substantially transparent film. The monomers employed therein have a range of refractive index from 1.4 to 1.8 and thus these compositions can be tailored to form transparent films of varied refractive indices. Accordingly, compositions of this invention are useful in various opto-electronic applications, including as coatings, encapsulants, fillers, leveling agents, among others.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: April 17, 2018
    Assignee: PROMERUS, LLC
    Inventors: Larry F Rhodes, Hugh A Burgoon
  • Patent number: 9941973
    Abstract: A phase modulator with reduced Residual Amplitude Modulation includes a main path; a correction path; a first coupler configured to split, at a first ratio, an input to the main path and the correction path; and a second coupler configured to combine outputs from the main path and the correction path and to split the combined outputs, at a second ratio, with a first output comprising an output of the phase modulator with the reduced Residual Amplitude Modulation. The correction path can include a correction signal with a proper amplitude and phase that, when combined with an output signal from the main path by the second coupler, cancels the Residual Amplitude Modulation from the output signal.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: April 10, 2018
    Assignee: Ciena Corporation
    Inventors: Alexandre D. Simard, Yves Painchaud, Michel Poulin
  • Patent number: 9939579
    Abstract: Monolithic optical structures include a plurality of layer with each layer having an isolated optical pathway confined within a portion of the layer. The monolithic optical structure can be used as an optical fiber preform. Alternatively or additionally, the monolithic optical structure can include integrated optical circuits within one or more layers of the structure. Monolithic optical structures can be formed by performing multiple passes of a substrate through a flowing particle stream. The deposited particles form an optical material following consolidation. Flexible optical fibers include a plurality of independent light channels extending along the length of the optical fiber. The fibers can be pulled from an appropriate preform.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: April 10, 2018
    Assignee: NeoPhotonics Corporation
    Inventors: Michael A. Bryan, Xiangxin Bi
  • Patent number: 9933567
    Abstract: Provided is a photonic crystal structure and the photonic crystal structure includes a polymer structure layer including a first polymer domain and a second polymer domain; and a photonic crystal material designed to be reversibly bonded to at least a portion of the first polymer domain to adjust a degree of swelling of the first polymer domain, thereby reflecting a light of a certain wavelength.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: April 3, 2018
    Assignee: UNIVERSITY-INDUSTRY FOUNDATION (UIF), YONSEI UNIVERSITY
    Inventors: Cheolmin Park, Han Sol Kang
  • Patent number: 9929534
    Abstract: Optically pumpable waveguide amplifier with amplifier having tapered input and output. The present invention provides for a optically pumpable waveguide amplification device that includes: a cladding material; a passive optical waveguide embedded in the cladding material that has no optical amplification functionality; and an active optical waveguide having an input portion, a middle portion and an output portion, including: a gain material with a higher refractive index than the passive optical waveguide, wherein the middle portion of the active optical waveguide is embedded in the cladding material, and faces the passive wave guide, such that a lower surface of the middle portion is an upper surface of the passive optical waveguide. There is also provided a device for optically pumpable waveguide amplification and a method for signal radiation amplification.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: March 27, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Gabriele Raino, Ibrahim Murat Soganci
  • Patent number: 9926199
    Abstract: An ordered open-cellular carbon microstructure and a methods for forming the ordered open-cellular carbon microstructure capable of greatly improving the carbon yield (remaining mass % after carbonization) of an open-cellular polymer material. In one embodiment, the method starts with providing an ordered open-cellular polymer template material. The polymer template material is immersed in a reservoir containing a liquid monomer solution, wherein the liquid monomer solution swells the polymer material. Then the polymer template material is removed from the reservoir containing liquid monomer solution. Excess liquid monomer solution is removed from the polymer template material. The liquid monomer solution absorbed into the polymer template material is polymerized forming a copolymer material by irradiating the template material with ultraviolet (UV) light in a nitrogen environment.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: March 27, 2018
    Assignee: HRL Laboratories, LLC
    Inventor: Alan J. Jacobsen
  • Patent number: 9921358
    Abstract: In one aspect, a display comprises a light source, a film-based lightguide with a light emitting region positioned adjacent to and directing light to an active area of a spatial light modulator in a thickness direction. The film may have a light mixing region positioned between a light input region and the light emitting region. In one aspect the display comprises a guide element having a surface curved in a first plane positioned along a first edge of the spatial light modulator, wherein the film is folded along the curved surface at a first fold such that the first fold positions a portion of the light mixing region above or below the active area, the light mixing region comprises the first fold, and an inner surface of the film in the light mixing region is in contact with and curved along the curved surface of the guide element.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: March 20, 2018
    Assignee: Flex Lighting II, LLC
    Inventors: Anthony Nichol, Zane Coleman
  • Patent number: 9914807
    Abstract: A bulk polymer composite comprising a thiol-ene polymer matrix, or the corresponding polymers derived from a phosphinyl, selenol, or arsinyl monomer, and metal oxide nanoparticles dispersed within said matrix, said nanoparticles being bonded to polymer molecules contained in the matrix. Terpolymers that further comprise repeat units derived from a molecular metal oxide cluster, and composites in which such terpolymers function as a matrix for metal oxide nanoparticles are also disclosed.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: March 13, 2018
    Assignee: Florida State University Research Foundation, Inc.
    Inventor: Albert Stiegman
  • Patent number: 9904002
    Abstract: Windows, or other types of transparent materials, may be constructed to passively allow light from alternate sources to pass therethrough, while also being able to actively produce artificial light for providing illumination from one side of the window by means of an incorporated optical waveguide that accepts light from an edge of the window and disperses it from only one side of the window.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: February 27, 2018
    Assignee: Empire Technology Development LLC
    Inventors: Gary Lynn Duerksen, Seth Adrian Miller
  • Patent number: 9897763
    Abstract: The disclosure generally relates to sets of optical waveguides such as optical fiber ribbons, and fiber optic connectors useful for connecting multiple optical fibers such as in optical fiber ribbon cables. In particular, the disclosure provides an efficient, compact, and reliable optical fiber connector that incorporates an optically transmissive substrate combining the features of optical fiber alignment, along with redirecting and shaping of the optical beam.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: February 20, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: James R. Bylander, Ding Wang
  • Patent number: 9890827
    Abstract: Architected materials with superior energy absorption properties when loaded in compression. In several embodiments such materials are formed from micro-truss structures composed of interpenetrating tubes in a volume between a first surface and a second surface. The stress-strain response of these structures, for compressive loads applied to the two surfaces, is tailored by arranging for some but not all of the tubes to extend to both surfaces, adjusting the number of layers of repeated unit cells in the structure, arranging for the nodes to be offset from alignment along lines normal to the surfaces, or including multiple interlocking micro-truss structures.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: February 13, 2018
    Assignee: HRL Laboratories, LLC
    Inventors: Tobias A. Schaedler, Alan J. Jacobsen, Zak C. Eckel, Sophia S. Yang, Adam E. Sorensen, Jacob M. Hundley, William Carter, Jie Jiang
  • Patent number: 9885939
    Abstract: The present invention discloses a TEOS based on slab PhCs with a high DOP and large EXR, which comprises an upper slab PhC and a lower slab PhC; the upper slab PhC is a first square-lattice slab PhC with a TM bandgap and a complete bandgap, wherein the unit cell of the first square-lattice slab PhC includes a high-refractive-index rotating-square pillar, a single first flat dielectric pillar and a background dielectric, the first flat dielectric pillar includes a high-refractive-index dielectric pipe and a low-refractive-index dielectric, or a high-refractive-index flat film, or a low-refractive-index dielectric; the lower slab PhC is a second square lattice slab PhC with a TM bandgap and complete bandgap, wherein the unit cell of the second square-lattice slab PhC includes a high-refractive-index rotating-square pillar, a single second flat dielectric pillar and a background dielectric, and an normalized operating frequency of the TEOS is 0.453 to 0.458.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: February 6, 2018
    Inventor: Zhengbiao Ouyang
  • Patent number: 9880444
    Abstract: The present invention discloses a TMOS with a high extinction ratio based on slab PhCs which comprises an upper slab PhC and a lower slab PhC connected as a whole; the upper slab PhC is called as a first square-lattice slab PhC, wherein the unit cell of the first square-lattice slab PhC includes a high-refractive-index rotating-square pillar, three first flat dielectric pillars and a background dielectric, and the first flat dielectric pillars includes a high-refractive-index dielectric pipe and a low-refractive-index dielectric, or of 1 to 3 high-refractive-index flat films, or of a low-refractive-index dielectric; the lower slab PhC is a second square-lattice slab PhC with a complete bandgap, the unit cell of the second square-lattice slab PhC includes a high-refractive-index rotating-square pillar, three second flat dielectric pillars and a background dielectric is a low-refractive-index dielectric and an normalized operating frequency of the TMOS is 0.4057 to 0.406.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: January 30, 2018
    Inventor: Zhengbiao Ouyang
  • Patent number: 9880404
    Abstract: An optical waveguide device includes a substrate; a lower cladding disposed on the substrate; a rib waveguide including a slab disposed on the lower cladding and a single rib disposed on the slab contiguous to the slab; and an upper cladding disposed on the rib waveguide. The rib waveguide includes a first doped region having a first electric conductivity exhibiting a P-type electric conductivity across the rib and the slab and a second doped region being contiguous to the first doped region and having a second electric conductivity exhibiting an N-type electric conductivity across the rib and the slab.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: January 30, 2018
    Assignees: FUJIKURA LTD., AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Kensuke Ogawa, Kazuhiro Goi, Guo-Qiang Lo, Tsung-Yang Jason Liow, Xiaoguang Tu
  • Patent number: 9880405
    Abstract: An optical modulator is described. This optical modulator may be implemented using silicon-on-insulator (SOI) technology. In particular, a semiconductor layer in an SOI platform may include a photonic crystal having a group velocity of light that is less than that of the semiconductor layer. Moreover, an optical modulator (such as a Mach-Zehnder interferometer) may be implemented in the photonic crystal with a vertical junction in the semiconductor layer. During operation of the optical modulator, an input optical signal may be split into two different optical signals that feed two optical waveguides, and then subsequently combined into an output optical signal. Furthermore, during operation, time-varying bias voltages may be applied across the vertical junction in the optical modulator using contacts defined along a lateral direction of the optical modulator.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: January 30, 2018
    Assignee: Oracle International Corporation
    Inventors: Ying Luo, Shiyun Lin, Xuezhe Zheng, Ashok V. Krishnamoorthy
  • Patent number: 9874701
    Abstract: A system for selectively adiabatically coupling electromagnetic waves from one waveguide to another waveguide is described. It comprises a first waveguide portion and a second waveguide portion having substantially different surface normal cross-sections. Portions thereof are positioned with respect to each other in a coupling region so that under first predetermined environmental conditions coupling of electromagnetic waves between the first waveguide portion and the second waveguide portion can occur and under second predetermined environmental conditions substantially no coupling of electromagnetic waves between the first waveguide portion and the second waveguide portion can occur.
    Type: Grant
    Filed: December 21, 2014
    Date of Patent: January 23, 2018
    Assignees: UNIVERSITEIT GENT, IMEC VZW
    Inventors: Roeland Baets, Stijn Vandewiele, Danaë Delbeke, Dries Vanthourhout
  • 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: 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: 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: 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