Planar Optical Waveguide Patents (Class 385/129)
  • Patent number: 11360271
    Abstract: An optical switch includes a substrate with a waveguide-coupling area and a fluid channel with an anti-wetting layer on a first surface. First and second fluids are on the anti-wetting layer in the fluid channel and at least one fluid is selectively movable relative to the waveguide-fluid coupling area. A fluidic driving mechanism has at least one electrode positioned to apply an electric field to at least one of the fluids in the fluid channel and is capable of moving at least one of the fluids in the fluid channel. The anti-wetting layer has an alkyl silane coating, which includes alkyl silane molecules covalently bonded to the first surface of the fluid channel.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: June 14, 2022
    Assignee: COMMSCOPE TECHNOLOGIES LLC
    Inventors: Roland Simon H. Claes, Yolanda Justo Zarraquinos, Sarah Günther-Müller, Shuhao Si
  • Patent number: 11329003
    Abstract: A method of printing structures on a reconstructed wafer includes positioning a plurality of semiconductor dies on a support substrate, anchoring the plurality of semiconductor dies to the support substrate by printing a plurality of anchors that extend across edges of the semiconductor dies onto the support substrate and thus form a reconstructed wafer, and printing one or more device structures on the pluralities of semiconductor dies while anchored on the support substrate. The printing operations include ejecting droplets of a liquid precursor material and curing the liquid precursor material.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: May 10, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Daihua Zhang, Hou T. Ng, Nag B. Patibandla, Sivapackia Ganapathiappan, Yingdong Luo, Kyuil Cho, Han-Wen Chen
  • Patent number: 11327225
    Abstract: A flexible polymer waveguide array structure serves as a stitch or jumper on an optical printed circuit board (OPCB). The flexible polymer waveguide array structure can be attached to the OPCB so that it can provide a chip-to-OPCB optical connection. The waveguide(s) in the flexible polymer waveguide array structure may be prefabricated before the flexible polymer waveguide array structure is attached to the OPCB. Alternatively, the waveguides may be fabricated after the flexible polymer waveguide array structure has been attached to the OPCB. The waveguide(s) may be subsequently formed using a printing process such as photolithography. As a consequence of forming the waveguide(s) after attachment of the flexible polymer waveguide array to the OPCB, the precision in the lateral alignment that is required when placing the flexible polymer waveguide array structure on the OPCB is generally significantly less than is required when the waveguide(s) are prefabricated.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: May 10, 2022
    Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
    Inventors: Thomas L. Koch, Robert A. Norwood, Stanley K. H. Pau, Nasser N. Peyghambarian
  • Patent number: 11327232
    Abstract: A light polarizing element include: a first port waveguide; two second port waveguides; and a multi-mode interference waveguide optically connected to the first port waveguide and the two second port waveguides, the multi-mode interference waveguide having at least one slit formed therein, the at least one slit having a shape that enables the multi-mode interference wave guide to give different effective refractive indexes to respective mutually orthogonal polarized light waves input from the first port waveguide, thereby separating the mutually orthogonal polarized light waves, and that enables the separated mutually orthogonal polarized light waves to be output from the respective two second port waveguides.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: May 10, 2022
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventor: Junichi Hasegawa
  • Patent number: 11322381
    Abstract: A method for printing on a substrate includes printing a support structure by printing a liquid precursor material and curing the liquid precursor material, positioning a substrate within the support structure, printing one or more anchors on the substrate and the support structure by printing and curing the liquid precursor material to secure the substrate to the support structure, and printing one or more device structures on the substrate while anchored by printing and curing the liquid precursor material.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: May 3, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Daihua Zhang, Hou T. Ng, Nag B. Patibandla, Sivapackia Ganapathiappan, Yingdong Luo, Kyuil Cho, Han-Wen Chen
  • Patent number: 11320590
    Abstract: Structures for a polarizer and methods of fabricating a structure for a polarizer. A waveguide crossing includes a first arm and a second arm. A waveguide loop couples the first arm of the waveguide crossing to the second arm of the waveguide crossing. The waveguide crossing and the waveguide loop provide a structure for the polarizer.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: May 3, 2022
    Assignees: GlobalFoundries U.S. Inc., Khalifa University of Science and Technology
    Inventors: Yusheng Bian, Sujith Chandran, Jaime Viegas, Humarira Zafar, Ajey Poovannummoottil Jacob
  • Patent number: 11307352
    Abstract: An optical waveguide article includes a base layer formed from a first glass composition with a refractive index nbase and a surface layer fused to the base layer and formed from a second glass composition with a refractive index nsurface. A waveguide is disposed within the surface layer. nbase and nsurface satisfy the equation |nsurface?nbase|?0.001. A method for forming an optical waveguide article includes forming a waveguide in a surface layer of a glass laminate structure including a base layer fused to the surface layer. The base layer is formed from a first glass composition with a refractive index nbase. The surface layer is formed from a second glass composition with a refractive index nsurface. nbase and nsurface satisfy the equation |nsurface?nbase|?0.0001.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: April 19, 2022
    Assignee: CORNING INCORPORATED
    Inventors: Venkata Adiseshaiah Bhagavatula, Natesan Venkataraman
  • Patent number: 11296484
    Abstract: A bound states in the continuum (BIC) surface emitting laser includes a light emitter configured to generate BIC light waves. The laser also includes an array of holes with equal radii extending through the light emitter such that light emitted by the light emitter upon receipt of power is emitted as a coherent vortex beam at an angle to a surface normal of the light emitter that is determined at least in part by the radius of the holes in the array.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: April 5, 2022
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Boubacar Kante, Babak Bahari
  • Patent number: 11258016
    Abstract: The present disclosure provides a display backplane, a method for preparing the same, and a display device. The display backplane includes a substrate, an electronic device and an alignment mark arranged on the substrate, and a filling layer, the filling layer being filled in at least a part of a recessed area located on a surface of the substrate away from the electronic device, and a minimum distance between an orthogonal projection of the at least part of the recessed area on the substrate and an orthogonal projection of the alignment mark on the substrate being less than 200 ?m.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: February 22, 2022
    Assignees: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhiyong Xue, Nini Bai, Liman Peng, Liangliang Liu, Qianqian Zhang, Shujie Liu, Hailong Li, Lingling Ma, Hongyu Mi, Xu Liu, Qiang Chen, Guodong Jing
  • Patent number: 11231548
    Abstract: A three-dimensional photonic integrated structure includes a first semiconductor substrate and a second semiconductor substrate. The first substrate incorporates a first waveguide and the second semiconductor substrate incorporates a second waveguide. An intermediate region located between the two substrates is formed by a one dielectric layer. The second substrate further includes an optical coupler configured for receiving a light signal. The first substrate and dielectric layer form a reflective element located below and opposite the grating coupler in order to reflect at least one part of the light signal.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: January 25, 2022
    Assignee: STMicroelectronics (Crolles 2) SAS
    Inventors: Frederic Boeuf, Charles Baudot
  • Patent number: 11231550
    Abstract: The invention relates to a method for manufacturing a waveguide (2a, 2b) comprising: A supplying of a substrate (1) comprising a stack of a first layer (11) based on a first material on a second layer (12) based on a second material, and at least one sequence successively comprising: An etching of the first material, in such a way as to define at least one pattern (20, 22a) having etching flanks (200, 201), A smoothing annealing assisted by hydrogen in such a way as to smooth the etching flanks (200, 201) of the at least one pattern (20, 22a), A re-epitaxy of the first material on the pattern (20, 22a) based on the first material.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: January 25, 2022
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Corrado Sciancalepore, Houssein El Dirani, Jean-Michel Hartmann
  • Patent number: 11226451
    Abstract: A 3D optical switch for transferring an optical signal between a plurality of layers of an optical integrated circuit, which comprises: a first optical coupler for distributing the optical signal input to a first optical waveguide deployed in a first layer among the plurality of layers to a second optical waveguide deployed in a second layer different from the first layer; a phase shifter for changing a phase of a first optical signal in the first optical waveguide passing through the first optical coupler and a phase of a second optical signal in the second optical waveguide distributed by the first optical coupler; and a second optical coupler for combining the first optical signal of which the phase is changed and the second optical signal of which the phase is changed is provided.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: January 18, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jaegyu Park, Gyung Ock Kim, Jiho Joo
  • Patent number: 11215756
    Abstract: Structures including an edge coupler and methods of fabricating a structure including an edge coupler. The edge coupler includes a waveguide core, and a shaped layer is positioned over a portion of the waveguide core. The waveguide core is comprised of a first material, and the shaped layer is comprised of a second material different in composition from the first material. The first material may be, for example, single-crystal silicon, and the second material may be, for example, silicon nitride.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: January 4, 2022
    Assignee: Globalfoundries U.S. Inc.
    Inventors: Yusheng Bian, Roderick A. Augur, Michal Rakowski, Kenneth J. Giewont, Karen Nummy, Kevin K. Dezfulian, Bo Peng
  • Patent number: 11211680
    Abstract: A waveguide disclosed herein may be implemented as a hollow irregular hexagonal metal structure which receives an electromagnetic signal and propagates the signal through the hollow hexagonal metal structure. The waveguide may be fabricated using metal additive manufacturing techniques and include one or more downward facing and unsupported surfaces.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: December 28, 2021
    Assignee: Optisys, LLC
    Inventors: Michael Hollenbeck, Robert Smith
  • Patent number: 11156779
    Abstract: A method for depositing silicon oxynitride film structures is provided that is used to form planar waveguides. These film structures are deposited on substrates and the combination of the substrate and the planar waveguide is used in the formation of optical interposers and subassemblies. The silicon oxynitride film structures are deposited using low thermal budget processes and hydrogen-free oxygen and hydrogen-free nitrogen precursors to produce planar waveguides that exhibit low losses for optical signals transmitted through the waveguide of 1 dB/cm or less. The silicon oxynitride film structures and substrate exhibit low stress levels of less than 20 MPa.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: October 26, 2021
    Assignee: POET Technologies, Inc.
    Inventors: William Ring, Miroslaw Florjanczyk, Suresh Venkatesan
  • Patent number: 11137543
    Abstract: Structures for a polarizer and methods of fabricating a structure for a polarizer. A first waveguide core includes a section and a taper connected to the section. A second waveguide core is laterally positioned adjacent to the taper of the first waveguide core. An absorber is connected to the section of the first waveguide core. The absorber is composed of germanium.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: October 5, 2021
    Assignee: GLOBALFOUNDRIES U.S. INC.
    Inventors: Yusheng Bian, Ajey Poovannummoottil Jacob
  • Patent number: 11131808
    Abstract: In one embodiment, a waveguide includes an upstream portion, a downstream portion, and an intermediate portion between the upstream portion and the downstream portion. A first band is disposed on an insulating layer, the first band oriented along a first direction. A first lateral strip and a second lateral strip are disposed on either side of the first band, the first lateral strip and the second lateral strip being thinner or interrupted along the intermediate portion.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: September 28, 2021
    Assignees: STMICROELECTRONICS (ALPS) SAS, STMICROELECTRONICS (CROLLES 2) SAS
    Inventors: Charles Baudot, Sylvain Guerber, Patrick Le Maitre
  • Patent number: 11114480
    Abstract: A photodetector device comprising n-type and p-type light absorbing regions arranged to form a pn-junction and n+ and p+ contact regions connected to respective contacts. The light absorbing regions and the contact regions are arranged in a sequence n+ p n p+ so that, after a voltage applied between the n+ and p+ contacts is switched from a reverse bias to a forward bias, electrons and holes which are generated in the light absorbing regions in response to photon absorption drift towards the p+ and n+ contact regions respectively, which causes current to start to flow between the contacts after a time delay which is inversely proportional to the incident light intensity.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: September 7, 2021
    Assignee: ACTLIGHT SA
    Inventors: Serguei Okhonin, Maxim Gureev, Denis Sallin
  • Patent number: 11104096
    Abstract: A sandwich structure configured to be secured with a mechanical fastener includes a core assembly, which includes a polymer component configured for supporting a mechanical fastener connector insert. The core assembly further includes an open cellular component formed from a plurality of self-propagating photopolymer waveguides positioned around the polymer component, wherein a first portion of the plurality of self-propagating photopolymer waveguides is secured to and extends from the polymer component. Further included is a first face sheet secured to a first side of the core assembly, wherein the first portion of the plurality of self-propagating photopolymer waveguides has a distal end spaced apart from the polymer component and secured to the second face sheet.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: August 31, 2021
    Assignee: THE BOEING COMPANY
    Inventors: Jacob Michael Hundley, Mark R. O'Masta, Zak Charles Eckel, Alvin Escobar, Kenneth Cante, Tony Koung
  • Patent number: 11099429
    Abstract: A surface light source device includes a substrate, a plurality of light emitting devices and a light diffusion plate. Each light emitting device includes a light emitting element and a light flux controlling member. A cross section, perpendicular to the central axis of the light flux controlling member, of the emission surface is line-symmetric with respect to the X-axis and the Y-axis, and the cross section has the shortest length along the X-axis and the longest length along the Y-axis. For the light flux controlling member of one of the light emitting devices that is disposed closest to a corner of the light diffusion plate in plan view, a part having a largest curvature in the emission surface on the cross section of the emission surface is located closer to the X-axis than an intersection point of a light beam with the emission surface is.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: August 24, 2021
    Assignee: Enplas Corporation
    Inventor: Toshihiko Mochida
  • Patent number: 11099323
    Abstract: The present invention provides a surface plasmon-optical-electrical hybrid conduction nano heterostructure and a preparation method therefor. The structure includes an exciting light source, a semiconductor nano-structure array, a two-dimensional plasmonic micro-nano structure, a sub-wavelength plasmon polariton guided wave, an emergent optical wave, a one-dimensional plasmonic micro-nano structure, a wire, a metal electrode, a conductive substrate, a probe molecule, an atomic-force microscopic conductive probe and a voltage source. The method achieves a semiconductor seed crystal with controllable distribution and density by controlling free metal ions, air, water or oxygen on a metal substrate to achieve highly uniform control of the seed crystal, and then strictly controls a length-to-diameter ratio and distribution of a semiconductor structure by continuous growth. Therefore, a new nano optics platform is provided for studying various novel effects produced by interaction between light and substances.
    Type: Grant
    Filed: May 28, 2018
    Date of Patent: August 24, 2021
    Assignee: SOUTHEAST UNIVERSITY
    Inventors: Xiaoyang Zhang, Tong Zhang, Shanjiang Wang, Xiaomei Xue, Huanli Zhou
  • Patent number: 11091623
    Abstract: A cyclic olefin resin composition film having high toughness with less difference in toughness between length and width directions. The cyclic olefin resin composition film contains a cyclic olefin resin, a styrene elastomer and inorganic oxide fine particles having an average particle diameter of 40 nm or smaller, and has a linear expansion coefficient of 40 ppm/° C. to 60 ppm/° C. This film attains high toughness with less difference in toughness between length and width directions.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: August 17, 2021
    Assignee: DEXERIALS CORPORATION
    Inventors: Ken Hosoya, Akihiro Horii, Kei Obata, Taku Ishimori, Kazuki Hirata, Hiroshi Sugata
  • Patent number: 11086085
    Abstract: An optical connector includes: an optical waveguide substrate including a plurality of core regions and a cladding layer covering the plurality of core regions; a first ferrule including a first housing portion that houses the optical waveguide substrate; a second ferrule facing the first ferrule and including a second housing portion that houses a multi-core optical fiber including a plurality of first cores and a first cladding covering the plurality of first cores; and a first positioning mechanism configured to determine a position of the second ferrule with respect to the first ferrule and fix the first ferrule and the second ferrule to each other such that the first ferrule and the second ferrule are separable from each other. The second ferrule is disposed such that each of the plurality of core regions is optically connected to a corresponding one of the plurality of first cores via a gap.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: August 10, 2021
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Tetsu Morishima
  • Patent number: 11066322
    Abstract: The embodiments disclosed herein are directed to forming selectively heat-treated glass-ceramic parts for use in an electronic device. In various embodiments, glass-ceramic parts, such as a cover sheet, may have multiple different regions having different objectives for material properties such as optical properties, strength, fracture toughness, hardness, and the like. Different regions may be selectively heat treated to achieve desired results.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: July 20, 2021
    Assignee: APPLE INC.
    Inventors: Christopher D. Jones, Matthew S. Rogers, Que Anh S. Nguyen
  • Patent number: 11054440
    Abstract: A method for generating a high-intensity light source at a probe tip, the method includes exciting a TM0 mode of a surface plasmon polariton (SPP) in a sharp-tip metal nanowire (AgNW) waveguide with a linearly-polarized mode (LP01) in a tapered optical fiber (OF); and compressing the TM0 mode through a chemically-sharpened taper to a tip apex of the sharp-tip silver nanowire (AgNW).
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: July 6, 2021
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Ming Liu, Ruoxue Yan
  • Patent number: 11048085
    Abstract: A light concentrating backlight includes a light guide to guide light and a diffraction grating configured to diffractively couple out a portion of the guided light as diffractively coupled-out light and to concentrate the diffractively coupled-out light into an eyebox. A near-eye display system includes the light guide and the diffraction grating, and further includes a light valve array configured to modulate the diffractively coupled-out light to form an image in the eyebox. The formed image is configured to be viewable within the eyebox by a user.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: June 29, 2021
    Assignee: LEIA INC.
    Inventor: David A. Fattal
  • Patent number: 11048139
    Abstract: Optical modulators with semiconductor based optical waveguides interacting with an RF waveguide in a traveling wave structure. The semiconductor optical waveguide generally comprise a p-n junction along the waveguide. To reduce the phase walk-off between the optical signal and the RF signal, the traveling wave structure can comprise one or more compensation sections where the phase walk-off is reversed. The compensation sections can comprise a change in dopant concentrations, extra length for the optical waveguide and/or extra length for the RF waveguide. Corresponding methods are described.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: June 29, 2021
    Assignee: NeoPhotonics Corporation
    Inventor: Jianying Zhou
  • Patent number: 11048046
    Abstract: The invention relates to an optical coupler (10) in a vertical configuration, capable of working for a wavelength and comprising a first waveguide (12) and a second waveguide (14). The second waveguide (14) has a patterning (33) in the form of a series of patterns (36), the patterns (36) extending along a transverse direction (X) perpendicular to the longitudinal direction (Z), being parallel to each other and orthogonal to the general direction of the first waveguide (12), each pattern (36) being arranged both in the core (30) and the cladding (32) of the second waveguide (14) and having parameters influencing the evanescent wave coupling between the first waveguide (12) and the second waveguide (14), said parameters being chosen such that the coupling (C) is greater than 15%.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: June 29, 2021
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Salim Boutami, Mickaël Brun, Pierre Labeye, Sergio Nicoletti, Grégory Maisons
  • Patent number: 11002927
    Abstract: In an embodiment, a package structure including an electro-optical circuit board, a fanout package disposed over the electro-optical circuit board is provided. The electro-optical circuit board includes an optical waveguide. The fanout package includes a first optical input/output portion, a second optical input/output portion and a plurality of electrical input/output terminals electrically connected to the electro-optical circuit board. The first optical input/output portion is optically coupled to the second optical input/output portion through the optical waveguide of the electro-optical circuit board.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: May 11, 2021
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chia-Lun Chang, Ching-Hua Hsieh, Cheng-Ting Chen, Hsiu-Jen Lin, Hsuan-Ting Kuo, Chia-Shen Cheng, Chih-Chiang Tsao
  • Patent number: 11002414
    Abstract: [Object] External leakage of laser light can be prevented in a reflective type light source device. [Solution] Laser light excites a first surface (21) of a phosphor light-emitting section. (20), and a window portion (30) formed of a transparent member disposed spaced away from the first surface (21) is provided. A light leakage prevention portion (600), which inhibits the laser light reflected at the first surface (21) of the phosphor light-emitting section (20) from leaking to the outside through the window portion (30) is provided to part of the window portion (30).
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: May 11, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Koji Takahashi, Karl Peter Welna
  • Patent number: 11002996
    Abstract: A metallic quantum well may be formed by interposing a layer of metallic well material two layers of barrier material. Two or more metallic quantum wells may be combined to form a coupled metallic quantum well. The absorption spectrum and the emission spectrum of the coupled metallic quantum well may be tuned by at least adjusting the dimensions of the individual metallic quantum wells and/or the materials forming the metallic quantum wells. The metallic quantum well and/or the coupled metallic quantum well may exhibit sufficient nonlinearity even at a miniaturized scale. As such, the metallic quantum well and/or coupled metallic quantum well may be used for a variety of on-chip applications including, for example, as part of an on-chip pulse limiter, an on-chip super-continuum generator, and/or the like.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: May 11, 2021
    Assignee: The Regents of the University of California
    Inventors: Zhaowei Liu, Yuzhe Xiao, Haoliang Qian
  • Patent number: 11003044
    Abstract: An electro-optic device is provided with a Mach-Zehnder optical waveguide including at least one linear section and at least one curved section and a differential RF signal electrode provided along the Mach-Zehnder optical waveguide. Optical input/output ports of the Mach-Zehnder optical waveguide are provided at one end side in a first direction in which the linear section extends. The differential RF signal electrode is provided in both the linear and curved sections.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: May 11, 2021
    Assignees: TDK CORPORATION, FUJITSU OPTICAL COMPONENTS LIMITED
    Inventors: Hiroki Hara, Shinji Iwatsuka, Takashi Kikukawa, Toshinori Matsuura, Yasuhiro Ohmori, Masaharu Doi, Shintaro Takeuchi, Yoshinobu Kubota
  • Patent number: 10996382
    Abstract: An optical device with a variable index of refraction is formed by exposing a film to an energy gradient. The optical device has angular selectivity. The optical device can be used as an output coupler for a waveguide used in a virtual-reality and/or augmented-reality apparatus.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: May 4, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Giuseppe Calafiore, Austin Lane, Matthew E. Colburn
  • Patent number: 10989874
    Abstract: When routing light on photonic integrated circuit (PIC) chips optical back-reflection and scattering can be highly detrimental to the desired application. Unused ports of optical devices, such as MMI, DC, Y-junction, PD, etc. are a cause for back-reflection and scattering, whereby the scattered light could get picked up by adjacent components, e.g. photodetectors. Management of stray light on the PIC is needed to prevent the undesired coupling between various components and to reduce noise. A dump taper may be used to guide and scatter stray light away from sensitive components or fully absorb the light while maintaining very low reflection from the taper. A doped dump taper may be used to passively absorb light reaching the unused port, thereby eliminating unwanted reflection and scattering. Alternatively, an undoped taper may be used to scatter light away from sensitive components while maintaining very low back-reflection.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: April 27, 2021
    Assignee: Elenion Technologies, LLC
    Inventors: Yang Liu, Ruizhi Shi, Tal Galfsky
  • Patent number: 10985521
    Abstract: A problem with a conventional waveguide type laser device is that in the case in which an isotropic laser medium is used for a core, linearly polarized light is not provided. A ridge waveguide laser device of the present disclosure includes: a substrate; a core joined to the substrate and having a laser medium, the core having a refractive index higher than that of the substrate; and a cladding joined to the core, constituting a ridge waveguide together with the core, and made from a birefringent material having ordinary and extraordinary refractive indices lower than the refractive index of the core, the ordinary and extraordinary refractive indices being different.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: April 20, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yojiro Watanabe, Takayuki Yanagisawa
  • Patent number: 10985448
    Abstract: The described features include a scalable waveguide architecture for a waveguide device. The waveguide device may be split into one or more waveguide blocks instead of manufacturing increasingly larger single-piece waveguide devices. Described techniques provide for a radio-frequency (RF) seal between such waveguide blocks that may facilitate greater manufacturing tolerances while maintaining an effective RF seal at the junction of the waveguide blocks. The described techniques include channels within one or more waveguide blocks opening to the dielectric gap between the waveguide blocks. The channels may, for each of multiple waveguides joined at the interface between waveguide blocks, be included in one or both waveguide blocks and may be in a single waveguide dimension relative to the multiple waveguides, or extend for more than one waveguide dimensions.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: April 20, 2021
    Assignee: Viasat, Inc.
    Inventors: Frederic Bongard, Xavier Aubry, Martin Gimersky
  • Patent number: 10976497
    Abstract: The invention described herein pertains to the structure and formation of dual core waveguide structures and to the formation of optical devices including spot size converters from these dual core waveguide structure for the receiving and routing of optical signals on substrates, interposers, and sub-mount assemblies.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: April 13, 2021
    Assignee: POET Technologies, Inc.
    Inventors: Suresh Venkatesan, Miroslaw Florjanczyk, Trevor Hall, Peng Liu, Jing Yang
  • Patent number: 10976489
    Abstract: An optical device includes a waveguide configured to guide light, a taper integrated with the waveguide on a substrate configured for optical coupling, and an attenuator to degrade unwanted optical signal from the taper. The attenuator extends along one side of the taper, and includes one of a conductive structure, a doped structure and a refractive structure.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: April 13, 2021
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Chewn-Pu Jou, Huan-Neng Chen, Lan-Chou Cho, Feng Wei Kuo
  • Patent number: 10976496
    Abstract: The invention described herein pertains to the structure and formation of dual core waveguide structures and to the formation of optical devices including spot size converters from these dual core waveguide structure for the receiving and routing of optical signals on substrates, interposers, and sub-mount assemblies.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: April 13, 2021
    Assignee: POET Technologies, Inc.
    Inventors: Suresh Venkatesan, Miroslaw Florjanczyk, Trevor Hall, Peng Liu, Jing Yang
  • Patent number: 10976490
    Abstract: There is provided an optoelectronic device including: first and second optical waveguides arranged on a bulk silicon substrate to be spaced apart from each other in a first direction parallel to an upper surface of the bulk silicon substrate; and an active region interposed between the first and second optical waveguides on the bulk silicon substrate such that one side of the active region contacts the first optical waveguide and the other side contacts the second optical waveguide portion, wherein the first and second optical waveguides and the active region include germanium-silicon (GeSi) alloy.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: April 13, 2021
    Assignee: KOOKMIN UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventor: Donghwan Ahn
  • Patent number: 10964840
    Abstract: Photodiode structures and methods of manufacture are disclosed. The method includes forming a waveguide structure in a dielectric layer. The method further includes forming a Ge material in proximity to the waveguide structure in a back end of the line (BEOL) metal layer. The method further includes crystallizing the Ge material into a crystalline Ge structure by a low temperature annealing process with a metal layer in contact with the Ge material.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: March 30, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: John J. Ellis-Monaghan, Jeffrey P. Gambino, Mark D. Jaffe, Kirk D. Peterson
  • Patent number: 10962715
    Abstract: An optical subassembly includes a planar dielectric waveguide structure that is deposited at temperatures below 400 C. The waveguide provides low film stress and low optical signal loss. Optical and electrical devices mounted onto the subassembly are aligned to planar optical waveguides using alignment marks and stops. Optical signals are delivered to the submount assembly via optical fibers. The dielectric stack structure used to fabricate the waveguide provides cavity walls that produce a cavity, within which optical, optoelectronic, and electronic devices can be mounted. The dielectric stack is deposited on an interconnect layer on a substrate, and the intermetal dielectric can contain thermally conductive dielectric layers to provide pathways for heat dissipation from heat generating optoelectronic devices such as lasers.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: March 30, 2021
    Assignee: POET Technologies, Inc.
    Inventors: William Ring, Suresh Venkatesan
  • Patent number: 10955614
    Abstract: Optical coupler structures have an insulator layer on a substrate, a waveguide structure in the insulator layer, and a cladding layer on the waveguide structure and the insulator layer. Optical grating couplers are on the cladding layer and the waveguide structure is connected between the optical grating couplers. The waveguide structure is discontinuous between the optical grating couplers. The insulator layer includes an array at a transmission blocking region between discontinuous sections of the waveguide structure. This array can be a void opening array of openings or can be a blocking element array of disconnected elements in the insulator layer.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: March 23, 2021
    Assignee: GLOBALFOUNDRIES U.S. Inc.
    Inventors: Bo Peng, Ajey Poovannummoottil Jacob, Yusheng Bian
  • Patent number: 10955613
    Abstract: An arrayed waveguide grating. The arrayed waveguide grating includes two star couplers and an array of waveguides connecting the star couplers. The T-shaped geometry of the array of waveguides makes possible an AWG with an arbitrarily large free spectral range in a compact form factor. An array mode converter produces a field pattern, at an aperture of a free propagation region of a star coupler, having overlapping modes from adjacent waveguides.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: March 23, 2021
    Assignee: Rockley Photonics Limited
    Inventor: Andrea Trita
  • Patent number: 10955627
    Abstract: The present disclosure relates to a planar optical waveguide and an optical module. A planar optical waveguide according to the present disclosure includes a core and dads provided at an upper portion and a lower portion of the core, respectively, and an end of an upper clad facing a light source is polished to form a first refractive surface inclined at a first angle to refract a light emitted to the upper portion of the core and guide the light to the core. The refractive surfaces are formed at the upper clad and the lower clad of the planar optical waveguide in consideration of beam characteristics of the light source to reduce optical coupling loss without a separate optical waveguide lens.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: March 23, 2021
    Assignee: FIBERPRO, INC.
    Inventors: Sang Jun Cha, Sung Duck Kim, Eun II Jeong
  • Patent number: 10944234
    Abstract: An apparatus includes an optical fiber configured to transport an optical signal. A cross-section of the optical fiber has a longer slow-axis dimension and a shorter fast-axis dimension. The optical fiber includes a core configured to receive and amplify the optical signal, end features optically coupled to the core at opposite ends of the core, and a cladding surrounding the core and end features. The core has a height in the slow-axis dimension and a width in the fast-axis dimension. Each end feature has a height in the slow-axis dimension and a width in the fast-axis dimension. The core has a lower bend loss than the end features. The optical fiber is configured to confine optical power of a fundamental mode in the core and allow optical power of higher-order mode(s) to leak from the core into the end features. Each end feature's height is less than the core's width.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: March 9, 2021
    Assignee: Raytheon Company
    Inventors: Vladimir V. Shkunov, David A. Rockwell
  • Patent number: 10944235
    Abstract: A light source comprises a GeSn active zone inserted between two contact zones. The active zone is formed directly on a silicon oxide layer by a first lateral epitaxial growth of a Ge germination layer followed by a second lateral epitaxial growth of a GeSn base layer. A cavity is formed between the contact zones by encapsulation and etching, so as to guide these lateral growths. A vertical growth of GeSn is then achieved from the base layer to form a structural layer. The active zone is formed in the stack of base and structural layers.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: March 9, 2021
    Assignee: Commissariat A L'Energie Atomique et aux Energies Alternatives
    Inventors: Vincent Reboud, Georgio El Zammar, Rami Khazaka, Sylvie Menezo
  • Patent number: 10921274
    Abstract: The apparatus includes a sensor having a multi-portion dielectric composite. A microstrip transmission line is formed on the dielectric composite and includes an input section, radiator portion, and an output section. The dielectric material adjacent the radiator portion is selected to substantially match that of the certain portions of a live organism being sensed, allowing other constituents of the organism to be sensed. This allow the radiator portion to effectively respond as if it were embedded inside the organism, removing substantial uncertainly from the measurement process. By then applying a plurality of signals to the sensor, the reflected and transmitted components of the signal can be measured and used to determine the amount of certain constituents are present in the organism.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: February 16, 2021
    Inventors: John W. Hodges, Marc E. Rippen
  • Patent number: 10910794
    Abstract: A light-emitting device includes a substrate including a photonic cavity and configured to function as a gate, an active layer including a two-dimensional material, a first conductive contact, and a second conductive contact. The wavelength range of light generated by the light-emitting device may be narrowed based on the photonic cavity being included in the substrate, and the intensity and wavelength range of the generated light may be controlled based on the substrate functioning as a gate.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: February 2, 2021
    Assignees: Samsung Electronics Co., Ltd., President and Fellows of Harvard College
    Inventors: Jinseong Heo, Minhyun Lee, Seongjun Park, Philip Kim, Hongkun Park, Donhee Ham
  • Patent number: 10901152
    Abstract: An SOI substrate is attracted to and detached from an electrostatic chuck included in a semiconductor manufacturing device without failures. A semiconductor device includes a semiconductor substrate made of silicon, a first insulating film formed on a main surface of the semiconductor substrate and configured to generate compression stress to silicon, a waveguide, made of silicon, formed on the first insulating film, and a first interlayer insulating film formed on the first insulating film so as to cover the waveguide. Further, a second insulating film configured to generate tensile stress to silicon is formed on the first interlayer insulating film and in a region distant from the optical waveguide by a thickness of the first insulating film or larger. The second insulating film offsets the compression of the first insulating film.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: January 26, 2021
    Assignee: Renesas Electronics Corporation
    Inventor: Tatsuya Usami