Planar Optical Waveguide Patents (Class 385/129)
  • 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: 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: 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: 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: 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: 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: 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: 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: 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: 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
  • 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: 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: 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: 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: 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: 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: 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