Multilayer Structure (mixture) Patents (Class 385/131)
  • Patent number: 11067750
    Abstract: Embodiments disclosed herein generally relate to optical coupling between a highly-confined waveguide region and a low confined waveguide region in an optical device. The low confined waveguide region includes a trench in a substrate of the optical device in order to provide additional dielectric layer thickness for insulation between the substrate of the optical device and waveguides for light signals having a low optical mode. The low confined waveguide region is coupled to the highly-confined waveguide region via a waveguide overlap and in some embodiments via an intermediary coupling waveguide.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: July 20, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: Alexey V. Vert, Vipulkumar K. Patel, Mark A. Webster
  • Patent number: 11036005
    Abstract: A method of transfer printing. The method comprising: providing a precursor photonic device, comprising a substrate and a bonding region, wherein the precursor photonic device includes one or more alignment marks located in or adjacent to the bonding region; providing a transfer die, said transfer die including one or more alignment marks; aligning the one or more alignment marks of the precursor photonic device with the one or more alignment marks of the transfer die; and bonding at least a part of the transfer die to the bonding region.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: June 15, 2021
    Assignee: Rockley Photonics Limited
    Inventors: Guomin Yu, Aaron John Zilkie
  • Patent number: 10996395
    Abstract: There is provided an opto-electric hybrid board with slight or no warpage. An opto-electric hybrid board according to the present disclosure includes an electric circuit board and an optical waveguide formed in a stacked manner on one surface of the electric circuit board. The optical waveguide includes an under cladding layer, cores for an optical path formed on a front surface of the under cladding layer, and over cladding layer formed on the front surface of the under cladding layer so as to cover the cores. A groove for prevention of warpage which has a bottom positioned below a top surface of the cores is formed at least in a front surface portion of the over cladding layer.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: May 4, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Naoyuki Tanaka, Yasuto Ishimaru, Yuichi Tsujita
  • Patent number: 10935868
    Abstract: A light steeling system and method for diffractive steering of electromagnetic radiation such as visible light is disclosed. Embodiments of the light steering system include leaky-mode SAW modulators as light modulator devices. The SAW modulators preferably include reflective diffractive gratings. The gratings are mounted to/patterned upon an exit face that opposes an exit surface of the SAW modulator, in one example. Steering of light signals emitted from the SAW modulators in these systems can be accomplished by varying wavelength of light signals introduced to the SAW modulators, and/or by varying frequency of RF drive signals applied to the SAW modulators. In addition, light field generators that incorporate SAW modulators of the proposed light steering system within displays of the light field generators are also disclosed.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: March 2, 2021
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Steven J. Byrnes, Gregg E. Favalora, Ian Ward Frank, Anthony Kopa, Jeffrey A. Korn, Michael G. Moebius
  • Patent number: 10908343
    Abstract: This disclosure provides a light source assembly and a display device, and the light source assembly includes: a first substrate and a second substrate arranged opposite to each other; a waveguide layer arranged between the first substrate and the second substrate; and a side-incident collimated light source arranged on a side of the waveguide layer, wherein the refractive index of the waveguide layer is higher than the refractive index of the first substrate, and the refractive index of the second substrate respectively; and light of the side-incident collimated light source is incident onto the side of the waveguide layer at a preset angle, and the incident light is totally reflected at the interference between the first substrate and the waveguide layer.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: February 2, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xianqin Meng, Xue Dong, Wei Wang, Xiaochuan Chen, Yafeng Yang, Jifeng Tan, Xiandong Meng, Jian Gao, Pengxia Liang, Ming Zhu
  • Patent number: 10903284
    Abstract: A display device, including: a substrate; a first light-emitting element disposed on the substrate; an encapsulation layer disposed on the first light-emitting element; an input sensing layer disposed on the encapsulation layer; and a diffraction pattern layer disposed on the input sensing layer. The diffraction pattern layer may include a plurality of diffraction patterns arranged to have a first period in one direction.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: January 26, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: So Young Lee, Sun Mi Kang, Hyun Ho Kim, Cheol Jang, Sun Young Jung, Sang Hwan Cho, Chung Sock Choi, Sang Hyun Han
  • Patent number: 10845669
    Abstract: In one example embodiment, an optical circuit for optical modulation of light may include an input waveguide including a first thickness, an optical modulator including a second thickness, and a tapered transition that optically couples the optical modulator and the input waveguide. The second thickness may be smaller than the first thickness. The tapered transition may adiabatically transform the optical mode of the input waveguide to the optical modulator.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: November 24, 2020
    Assignee: II-VI Delaware Inc.
    Inventors: Daniel Mahgerefteh, Ying Luo, Shiyun Lin, Jin-Hyoung Lee
  • Patent number: 10777615
    Abstract: There is provided a light emitting device which enables a color display with good color balance. A triplet compound is used for a light emitting layer of an EL element that emits red color, and a singlet compound is used for a light emitting layer of an EL element that emits green color and a light emitting layer of an EL element that emits blue color. Thus, an operation voltage of the EL element emitting red color may be made the same as the EL element emitting green color and the EL element emitting blue color. Accordingly, the color display with good color balance can be realized.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: September 15, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Patent number: 10775560
    Abstract: Small form-factor, sensitive and efficient waveguide devices capable of nondispersive infrared gas or liquid sensing and photocatalysis are designed based on photonic integrated circuits. The devices comprise three-dimensional optical waveguiding structures and preferably integrated light sources and photodetectors. Since the length of the waveguide scales with the number of waveguiding layers, a plurality of layers is used to design high-sensitivity sensors and high-efficiency photocatalysis devices. In one embodiment, titanium dioxide absorbs ultraviolet light to generate an electron-hole pair which, in the presence of water and oxygen, generates radicals that react with and mineralize undesirable organic compounds, such as the lipid membranes that envelope and protect viruses such as Coronavirus Disease 2019 (COVID-19), allowing to pry apart the membranes and destroy the cells.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: September 15, 2020
    Assignee: SCIDATEK INC.
    Inventors: Junichiro Fujita, Louay Eldada
  • Patent number: 10754083
    Abstract: An optical sheet for a backlight unit for guiding toward a front face side rays of light emitted by an LED light source. The optical sheet includes one or more resin layers. Ultrafine grooves oriented in specific directions are provided on a front face side or a back face side of at least one resin layer of the one or more resin layers. An average number of the ultrafine grooves per unit length in a direction perpendicular to an average orientation of the ultrafine grooves is preferably no less than 10/mm and no greater than 10,000/mm. A face of the at least one resin layer provided with the ultrafine grooves preferably has an arithmetic average roughness (Ra) in a direction perpendicular to an orientation of the ultrafine grooves being no less than 0.01 ?m and no greater than 5 ?m. Ultrafine grooves preferably constitute a diffraction grating.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: August 25, 2020
    Assignee: Keiwa Inc.
    Inventors: Kenichi Harada, Yoshitada Namikawa, Tadayoshi Fukuda, Yuki Matsuno
  • Patent number: 10746924
    Abstract: An optical communication device includes a support substrate, an optical waveguide, and a detector. The optical waveguide includes a first cladding layer that is formed on the support substrate, and is composed of silicon oxide or a material containing silicon oxide; a second cladding layer formed on the first cladding layer; and a core that is formed within the second cladding layer or between the first cladding layer and the second cladding layer, and is composed of silicon or a silicon-containing material. The detector contacts a part of the core, and is adapted to detect an intensity of light propagating through the core.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: August 18, 2020
    Assignee: FUJITSU OPTICAL COMPONENTS LIMITED
    Inventor: Masaki Sugiyama
  • Patent number: 10724701
    Abstract: The present disclosure relates to the field of automobile lamp technologies, and in particular, to a light source module based on a graded index lens, a lamp assembly including the light source module, and an automobile including the lamp assembly. The light source module includes a light source and a graded index lens disposed in front of the light source. Light emitted from the light source is incident to an incident surface of the graded index lens, and is emitted from an out-light surface of the graded index lens after being refracted and converged by using the graded index lens. The graded index lens converges the light emitted from the light source, so that the light has relatively large optical radioactive energy and a relatively small divergence angle on the out-light surface of the graded index lens.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: July 28, 2020
    Assignee: HASCO VISION TECHNOLOGY CO., LTD.
    Inventor: Jie Zhang
  • Patent number: 10718890
    Abstract: A lightguide includes features for extracting light that would otherwise be confined and propagate within the lightguide primarily by total internal reflection. A first portion of light propagating within the lightguide and extracted exits the lightguide through a first area of the lightguide having an optical reflectance of at least 30% and an optical transmittance of at least 5% for normally incident light at a wavelength of the extracted light. A second portion of light propagating within the lightguide and extracted exits the lightguide through a different second area of the lightguide having an optical transmittance of at least 80% for normally incident light at the wavelength of the extracted light.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: July 21, 2020
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Brian W. Ostlie, Tao Liu, Del R. Lawson, Brent A. Hedding, James A. Phipps, Jeffrey J. Pederson
  • Patent number: 10718990
    Abstract: A photonic circuit integrated on a silicon-on-insulator waveguide, the silicon-on-insulator waveguide including a guiding layer, a cladding layer, and a substrate layer. The guiding layer having a first surface and a second surface, the second surface abutting one surface of the cladding layer, the cladding layer having another surface in abutment with a surface of the substrate layer, a photon pump in optical communication with the guiding layer, a nonlinear optical material in contact with the guiding layer first surface, a photon beam of the photon pump traversing the silicon-on-insulator waveguide, and the silicon-on-insulator waveguide having an output beam that includes a signal beam and an idler beam.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: July 21, 2020
    Assignee: General Electric Company
    Inventors: Glen Peter Koste, Adam Halverson
  • Patent number: 10712271
    Abstract: In various embodiments a plasmonic cell force sensor platform is provided where the platform comprises a plurality of micropillars, where micropillars comprising the plurality of micropillars each have a nanoparticle (e.g., a plasmonic nanoparticle, a fluorescent nanoparticle, etc.) disposed at the tip.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: July 14, 2020
    Assignee: The Regents of the University Califnrnia
    Inventors: Fan Xiao, Pei-Yu E. Chiou
  • Patent number: 10705354
    Abstract: A method of fabricating a modulator of propagation losses and of index of propagation of an optical signal, including: following bonding of a substrate onto an encapsulated semiconductor layer including a first electrode of the modulator and prior to forming a second electrode of the modulator, the method includes: removing a base substrate onto which the encapsulated semiconductor layer is deposited to expose a face of a buried layer of dielectric material, situated under the buried semiconductor layer, without modifying thickness of the buried layer by more than 5 nm; and forming the second electrode is implemented directly on this exposed face of the buried layer such that, once the second electrode has been formed, it is the buried layer which directly forms a dielectric layer interposed between proximal ends of the electrodes of the modulator.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: July 7, 2020
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Sylvie Menezo, Olivier Girard
  • Patent number: 10686297
    Abstract: A germanium waveguide is formed from a P-type silicon substrate that is coated with a heavily-doped N-type germanium layer and a first N-type doped silicon layer. Trenches are etched into the silicon substrate to form a stack of a substrate strip, a germanium strip, and a first silicon strip. This structure is then coated with a silicon nitride layer.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: June 16, 2020
    Assignee: STMicroelectronics (Crolles 2) SAS
    Inventors: Mathias Prost, Moustafa El Kurdi, Philippe Boucaud, Frederic Boeuf
  • Patent number: 10684416
    Abstract: A polarization splitter rotator (PCR) can include a substrate, a primary through waveguide formed in the substrate having a custom tapered top region over a bottom region, a secondary cross waveguide formed in the substrate having a custom body shape, and a gap between the primary through waveguide and secondary cross waveguide. The custom tapered top region forces the TM mode to convert to a TE mode and cross into the secondary cross waveguide.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: June 16, 2020
    Assignee: II-VI Delaware Inc.
    Inventors: Shiyun Lin, Jin-Hyoung Lee
  • Patent number: 10678005
    Abstract: Two semiconductor chips are optically aligned to form a hybrid semiconductor device. Both chips have optical waveguides and alignment surface positioned at precisely-defined complementary vertical offsets from optical axes of the corresponding waveguides, so that the waveguides are vertically aligned when one of the chips is placed atop the other with their alignment surface abutting each other. The position of the at least one of the alignment surface in a layer stack of its chip is precisely defined by epitaxy. The chips are bonded at offset bonding pads with the alignment surfaces abutting in the absence of bonding material therebetween.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: June 9, 2020
    Assignee: Elenion Technologies, LLC
    Inventors: David Henry Kinghorn, Ari Jason Novack, Holger N. Klein, Nathan A. Nuttall, Kishor V. Desai, Daniel J. Blumenthal, Michael J. Hochberg, Ruizhi Shi
  • Patent number: 10649148
    Abstract: A device is provided for optical mode spot size conversion to optically couple a semiconductor waveguide with an optical fiber. The device includes a waveguide comprising a waveguide taper region, which comprises a shoulder portion and a ridge portion above the shoulder portion. The ridge portion has a width that tapers to meet a width of the shoulder portion. The waveguide taper region comprises a first material. The device also has a mode converter coupled to the waveguide. The mode converter includes a plurality of stages, and each of the plurality of stages tapers in a direction similar to a direction of taper of the waveguide taper region. The mode converter is made of a second material different from the first material.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: May 12, 2020
    Assignee: Skorpios Technologies, Inc.
    Inventors: Majid Sodagar, Stephen B. Krasulick, John Zyskind, Paveen Apiratikul, Luca Cafiero
  • Patent number: 10598872
    Abstract: A micro-mirror array for optical coupling in a waveguide array including, a transparent body having a slanted portion, a sidewall portion, and a bottom portion, the sidewall portion and the bottom portion each respectively facing the slanted portion, and wherein a complementary shape of a conventional form off-axis mirror is arranged on the slanted portion, and a reflective coating on at least a portion of the complementary shape.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: March 24, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Jean Benoit Héroux, Masao Tokunari
  • Patent number: 10578893
    Abstract: An optical waveguide element that has improved frequency response in a high frequency region is provided. An optical waveguide element includes: a substrate that has an electro-optic effect; an optical waveguide that is formed on the substrate; a control electrode that is for modulating light waves propagating through the optical waveguide; and a reinforcing substrate that holds the substrate via an adhesion layer, and the reinforcing substrate has a low-dielectric constant portion with a lower dielectric constant than that of the reinforcing substrate at least in a part of a region in a plan view of the reinforcing substrate such that the low-dielectric constant portion partitions the reinforcing substrate in a thickness direction.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: March 3, 2020
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Yoichi Hosokawa, Masayuki Motoya
  • Patent number: 10573513
    Abstract: A semiconductor device including stacked structures. The stacked structures include at least two chalcogenide materials or alternating dielectric materials and conductive materials. A liner including alucone is formed on sidewalls of the stacked structures. Methods of forming the semiconductor device are also disclosed.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: February 25, 2020
    Assignee: Micron Technology, Inc.
    Inventors: Zhe Song, Tuman E. Allen, Cole S. Franklin, F. Daniel Gealy
  • Patent number: 10551536
    Abstract: Substrates with transparency to infrared body radiation and opacity in the visible light spectrum are provided and systems and methods for creation thereof are provided. The IR radiation transparent substrate is IR radiation transparent and visible light opaque with enough breathability and softness to make it suitable for use in garments for body thermal regulation. Further, the IR radiation transparent substrate is created utilizing nanofiber technology to form specific sized micro pores between the nanofibers.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: February 4, 2020
    Assignee: THE NORTH FACE APPAREL CORP.
    Inventor: Abolfazi Aghanouri
  • Patent number: 10514504
    Abstract: Conventional approaches to integrating waveguides within standard electronic processes typically involve using a dielectric layer, such as polysilicon, single-crystalline silicon, or silicon nitride, within the in-foundry process or depositing and patterning a dielectric layer in the backend as a post-foundry process. In the present approach, the back-end of the silicon handle is etched away after in-foundry processing to expose voids or trenches defined using standard in-foundry processing (e.g., complementary metal-oxide-semiconductor (CMOS) processing). Depositing dielectric material into a void or trench yields an optical waveguide integrated within the front-end of the wafer. For example, a shallow trench isolation (STI) layer formed in-foundry may serve as a high-resolution patterning waveguide template in a damascene process within the front end of a die or wafer.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: December 24, 2019
    Assignee: Massachusetts Institute of Technology
    Inventors: Jason Scott Orcutt, Karan Kartik Mehta, Rajeev Jagga Ram, Amir Hossein Atabaki
  • Patent number: 10509174
    Abstract: A SOI device may include a waveguide adapter that couples light between an external light source—e.g., a fiber optic cable or laser—and a silicon waveguide on the silicon surface layer of the SOI device. In one embodiment, the waveguide adapter is embedded into the insulator layer. Doing so may enable the waveguide adapter to be formed before the surface layer components are added onto the SOI device. Accordingly, fabrication techniques that use high-temperatures may be used without harming other components in the SOI device—e.g., the waveguide adapter is formed before heat-sensitive components are added to the silicon surface layer.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: December 17, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Mark Webster, Ravi Sekhar Tummidi
  • Patent number: 10495822
    Abstract: A connector includes a ferrule assembly having a ferrule, a hub and a spring, the ferrule having a distal face accessible at a distal end of the connector housing, the ferrule being movable in a proximal direction relative to the connector housing. The distal and proximal positions are separated by an axial displacement distance. The ferrule proximal movement is against the spring's bias. The cable of the assembly includes an optical fiber contained within a jacket and also a strength layer between the fiber and the jacket that is anchored to the connector housing. The fiber extends through a fiber from the proximal end of the connector housing to the ferrule. The fiber has a distal portion potted within the ferrule. The fiber passage has a fiber take-up region configured to take-up an excess length of the fiber corresponding to the ferrule axial displacement.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: December 3, 2019
    Assignee: CommScope Technologies LLC
    Inventor: Ponharith Nhep
  • Patent number: 10488594
    Abstract: A method of manufacturing an optical device is disclosed. The method includes forming a waveguide in a glass plate. The method further includes scanning the glass plate with a laser beam directed at an acute angle with respect to a first surface to form a mirror trench in the glass plate. Scanning the glass plate with the first laser beam includes pulses of the laser beam that have a duration between 2 and 500 femtoseconds. The method also includes filling the mirror trench with a reflective material and depositing a cladding layer over the waveguide and mirror trench.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: November 26, 2019
    Assignee: STMICROELECTRONICS SA
    Inventors: Cédric Durand, Frédéric Gianesello, Folly Eli Ayi-Yovo
  • Patent number: 10473855
    Abstract: Provided is a resin optical waveguide containing a core, under cladding and over cladding, in which the resin optical waveguide has portions having a core width varying along a light propagation direction, the maximum core width is 4 to 10 ?m, and the minimum core width of 1 ?m or more and less than 4 ?m, when the length of a portion S at which the core width is 1 ?m or more and less than 4 ?m is LS and the length of a portion at which the core width is 4 to 10 ?m is LL, the proportion of LS to the total length is 0.1 to 40%, and the portion S contains neither a certain bubble defect nor a certain defect inside the core and in a vicinity of a core-cladding interface.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: November 12, 2019
    Assignee: AGC INC.
    Inventors: Seiki Ohara, Kenta Kobayashi, Shotaro Takenobu
  • Patent number: 10437081
    Abstract: A phase controller for controlling the phase of a light signal in a surface waveguide and a method for its fabrication are disclosed. The phase controller controls the phase of the light signal by inducing stress in the waveguide structure, thereby controlling the refractive indices of at least some of its constituent layers. The phase controller includes a phase-control element formed on topographic features of the top cladding of the waveguide, where these features (1) provide a shape to the phase-control element that matches the shape of the mode field of the light signal and (2) give rise to stress-concentration points that focus and direct induced stress into specific regions of the waveguide structure, thereby providing highly efficient phase control. As a result, the phase controller can operate at a lower voltage, lower power, and/or over a shorter interaction length than integrated-optic phase controllers of the prior art.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: October 8, 2019
    Assignee: LioniX International BV
    Inventors: Jörn Philipp Epping, Arne Leinse, René Gerrit Heideman
  • Patent number: 10424708
    Abstract: A thermoelectric generator includes a perovskite dielectric substrate containing Sr and Ti and having electric conductivity by being doped to n-type; an energy filter formed on a top surface of the perovskite dielectric substrate, the energy filter including a first perovskite dielectric film, which contains Sr and Ti, has electric conductivity by being doped to n-type, and has a conduction band at an energy level higher than that of the perovskite dielectric substrate; a first electrode formed in electrical contact with a bottom surface of the perovskite dielectric substrate; and a second electrode formed in electrical contact with a top surface of the energy filter. The thermoelectric generator produces a voltage between the first and second electrodes by the top surface of the energy filter being exposed to a first temperature and the bottom surface of the perovskite dielectric substrate being exposed to a second temperature.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: September 24, 2019
    Assignee: FUJITSU LIMITED
    Inventors: John David Baniecki, Masatoshi Ishii, Kazuaki Kurihara
  • Patent number: 10416382
    Abstract: In an optical waveguide section of an SIS type having a configuration of stacking a second semiconductor layer over a first semiconductor layer with a dielectric layer interposed, the first semiconductor layer is electrically coupled to a first electrode at a first lead-out section where the second semiconductor layer is not stacked. Further, the second semiconductor layer is electrically coupled to a second electrode at a second lead-out section not overlapping with the first semiconductor layer. As a result, when a contact hole for forming the second electrode is formed by dry etching, the dielectric layer between the first semiconductor layer and the second semiconductor layer is not damaged or broken and hence short-circuit failure between the first semiconductor layer and the second semiconductor layer can be prevented. The reliability of the optical waveguide section therefore can be improved.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: September 17, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Yasutaka Nakashiba, Shinichi Watanuki
  • Patent number: 10365433
    Abstract: An apparatus includes an optical rib waveguide on a substrate, the optical rib waveguide further includes: a slab layer of silicon, a shallow rib of silicon in height that tapers laterally along a taper region, a deep rib of silicon that meets the shallow rib along the taper region of the shallow rib, and wherein the deep rib and the shallow rib have a same width, and wherein the shallow rib has a greater height than the deep rib, a core of silicon that tapers laterally in a range of 50-90% and extends on top of the deep rib and the shallow rib, and a cladding layer of silicon oxide that covers the slab, core, deep rib, and shallow rib.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: July 30, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Mir Ashkan Seyedi, Chin-Hui Chen
  • Patent number: 10353147
    Abstract: A system and method for manufacturing semiconductor devices is provided. An embodiment comprises using an etchant to remove a portion of a substrate to form an opening with a 45° angle with a major surface of the substrate. The etchant comprises a base, a surfactant, and an oxidant. The oxidant may be hydrogen peroxide.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: July 16, 2019
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Wan-Yu Lee, Ying-Hao Kuo, Hai-Ching Chen, Tien-I Bao
  • Patent number: 10345521
    Abstract: A waveguide mode expander couples a smaller optical mode in a semiconductor waveguide to a larger optical mode in an optical fiber. The waveguide mode expander comprises a shoulder and a ridge. In some embodiments, the ridge of the waveguide mode expander has a plurality of stages, the plurality of stages having different widths at a given cross section.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: July 9, 2019
    Assignee: Skorpios Technologies, Inc.
    Inventors: Guoliang Li, Damien Lambert, Nikhil Kumar
  • Patent number: 10330871
    Abstract: A waveguide coupler includes a first waveguide and a second waveguide. The waveguide coupler also includes a connecting waveguide disposed between the first waveguide and the second waveguide. The connecting waveguide includes a first material having a first index of refraction and a second material having a second index of refraction higher than the first index of refraction.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: June 25, 2019
    Assignee: Skorpios Technologies, Inc.
    Inventors: Amit Mizrahi, Timothy Creazzo, Elton Marchena, Derek Van Orden, Stephen B. Krasulick
  • Patent number: 10330864
    Abstract: An optical device includes a waveguide on a base and a taper on the base. The waveguide and the taper are optically aligned such that the taper and the waveguide exchange light signals during operation of the device. The taper is configured to guide the light signals through a taper material and the waveguide is configured to guide the light signals through a waveguide medium. The taper material and the waveguide medium are different materials and/or have different indices of refraction.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: June 25, 2019
    Assignee: Mellanox Technologies Silicon Photonics Inc.
    Inventors: Mehdi Asghari, Wei Qian, Pegah Seddighian, Bradley Jonathan Luff, Dazeng Feng, Joan Fong, Cheng-Chih Kung, Monish Sharma
  • Patent number: 10324254
    Abstract: A strip of sacrificial semiconductor material is formed on top of a non-sacrificial semiconductor material substrate layer. A conformal layer of the non-sacrificial semiconductor material is epitaxially grown to cover the substrate layer and the strip of sacrificial semiconductor material. An etch is performed to selectively remove the strip of sacrificial semiconductor material and leave a hollow channel surrounded by the conformal layer and the substrate layer. Using an anneal, the conformal layer and the substrate layer are reflowed to produce an optical waveguide structure including the hollow channel.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: June 18, 2019
    Assignee: STMicroelectronics, Inc.
    Inventor: Qing Liu
  • Patent number: 10324257
    Abstract: It is difficult to actualize a semiconductor optical waveguide having desired properties that reflect design even when process technology for a semiconductor electronic circuit is applied as is to the production of a semiconductor optical waveguide. The present invention includes: a substrate; a semiconductor optical waveguide structure arranged on the substrate; a planar region formed around the semiconductor optical waveguide structure on the substrate; and a semiconductor dummy structure that is arranged around the planar region on the substrate and is formed of a plurality of dummy patterns, wherein the semiconductor optical waveguide structure includes a line-symmetric pattern on a plane that is parallel to the substrate; and the plurality of dummy patterns are arranged symmetrically with respect to the symmetry axis of the line-symmetric pattern.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: June 18, 2019
    Assignee: NEC Corporation
    Inventor: Morio Takahashi
  • Patent number: 10317770
    Abstract: A Mach-Zehnder modulator includes: a first arm waveguide having first to third waveguide portions, the third waveguide portion being curved to couple the first and second waveguide portions with each other; a second arm waveguide having first to third waveguide portions, the third waveguide portion being curved to couple the first and second waveguide portions with each other, and a differential signal conductor having first and second signal conductors for driving the first and second arm waveguides, respectively. The first signal conductor has a first conductor portion and a first intersecting conductor portion connected thereto. The second signal conductor has a first conductor portion and a second intersecting conductor portion connected thereto. One of the first and second intersecting conductor portions includes an upper conducting layer, and the other includes a lower conducting layer. The upper conducting layer extends on the lower conducting layer apart therefrom.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: June 11, 2019
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Naoya Kono, Jun Otsuka
  • Patent number: 10317620
    Abstract: An interposer chip for coupling light between an array of fibers and an array of optical waveguides on a second photonic chip. The interposer chip has an array of V-grooves for aligning the ends of the fibers to corresponding ends of an array of optical waveguides on the interposer chip. Each optical waveguide has a taper with a first end and a second end, the first end being configured to support an optical mode that couples efficiently to the mode of an optical fiber. The taper reduces the vertical mode size, so that the mode supported by the second end of the taper may be efficiently coupled to a 3-micron thick optical waveguide on the second photonic chip. The interposer chip further has a hard stop having a flat surface parallel to the optical waveguides on the interposer chip, at the interface to the second chip.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: June 11, 2019
    Assignee: ROCKLEY PHOTONICS LIMITED
    Inventors: Andrew George Rickman, Aaron Zilkie, Damiana Lerose, Gerald Cois Byrd
  • Patent number: 10256604
    Abstract: A semiconductor nanolaser includes a rib formed by a stack of layers, in which stack central layers (33, 34, 35) forming an assembly of quantum wells are placed between a lower layer (32) of a first conductivity type and an upper layer (36) of a second conductivity type. Holes (42) are drilled right through the thickness of the rib, wherein the lower layer includes first extensions (38, 40) that extend laterally on either side of the rib, and that are coated with first metallizations (42, 44) that are located a distance away from the rib. The stack includes second extensions (45, 46) that extend longitudinally beyond said rib, and that are coated with second metallizations (47, 48).
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: April 9, 2019
    Assignees: STMicroelectronics (Crolles 2) SAS, Centre National de la Recherche Scientifique, Universite Paris Diderot
    Inventors: Guillaume Crosnier, Fabrice Raineri, Rama Raj, Paul Monnier
  • Patent number: 10228511
    Abstract: A slot waveguide for electro-optic modulation is provided. The slot waveguide includes a slot and Bragg gratings defined by outer walls of the slot. The Bragg gratings are configured to slow an optical signal. The slot defines a low-refractive index region and the Bragg gratings spaced apart by the slot define a high-refractive index region. The slot waveguide includes a pair of electrodes extending parallel and adjacent to the slot waveguide. The electrodes are configured to carry an electrical modulation signal to induce a change in a phase of the optical signal. The slot of the slot waveguide is at least partially filled with an electro-optic polymeric material poled in a direction orthogonal to a direction of propagation of the optical signal in the slot waveguide.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: March 12, 2019
    Assignee: LGS Innovations LLC
    Inventors: Jane D. LeGrange, Mihaela Dinu, Alex Pidwerbetsky
  • Patent number: 10222552
    Abstract: An integrated circuit is described. This integrated circuit includes an optical waveguide defined in a semiconductor layer, and a dielectric optical waveguide disposed on the semiconductor layer and that overlaps a region of the optical waveguide. Moreover, the dielectric optical waveguide includes an optical device (such as a mirror) on a facet separating a first portion of the dielectric optical waveguide and a second portion of the dielectric optical waveguide. The facet may be at an angle relative to a plane of the dielectric optical waveguide and may include a metal layer. During operation, an optical signal conveyed by the optical waveguide is evanescent coupled to the dielectric optical waveguide. Then, the optical signal may be reflected by the optical device. For example, the angle of the facet may be 45°, so that the optical signal is reflected normal to the plane of the dielectric optical waveguide.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: March 5, 2019
    Assignee: Oracle International Corporation
    Inventors: Stevan S. Djordjevic, Xuezhe Zheng, Ashok V. Krishnamoorthy
  • Patent number: 10224514
    Abstract: Disclosed herein is a transparent glass system that includes an optical grade silicon substrate, a transparent substrate layer; a titanium dioxide transparent layer, the transparent layer having an index of refraction of 2.35 or greater; and a polycrystalline diamond layer, wherein the transparent layer is between the substrate layer and the polycrystalline diamond layer.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: March 5, 2019
    Inventors: Adam Khan, Robert Polak, Priya Raman
  • Patent number: 10215919
    Abstract: An optical coupling arrangement is provided, comprising a lightwave circuit (LC), a coupling element and an optical waveguide element, wherein the lightwave circuit has a first surface area and wherein the coupling element is attached to the first surface area) such that an optical signal can be transmitted from the lightwave circuit to the coupling element. The optical waveguide element is attached to the coupling element at a first junction zone such that the optical signal can be transmitted from the coupling element to the optical waveguide element). The coupling element is configured to perform mode transformation to the optical signal transmitted from the lightwave circuit to the optical waveguide element and such that adiabatic coupling of the optical signal to the optical waveguide element is enabled. Thus, a better coupling efficiency can be achieved.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: February 26, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Tom Collins, Marco Lamponi
  • Patent number: 10207362
    Abstract: A laser beam irradiation unit of laser processing apparatus includes a pulse laser beam oscillating unit, a condenser that condenses a pulse laser beam and emits the beam to a workpiece held by a chuck table, a dichroic mirror disposed between the pulse laser beam oscillating unit and the condenser, a strobe light irradiation unit that emits light to a path on which the dichroic mirror and the condenser are disposed, a beam splitter disposed between the strobe light irradiation unit and the dichroic mirror, and an imaging unit disposed on the path of light split by the beam splitter. A controller actuates the strobe light irradiation unit and the imaging unit according to the timing of the pulse laser beam, and detects the width of a laser-processed groove immediately after emission of the pulse laser beam on the basis of an image signal from the imaging unit.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: February 19, 2019
    Assignee: Disco Corporation
    Inventors: Wataru Odagiri, Taku Iwamoto, Kentaro Odanaka, Hironari Ohkubo, Shuichiro Tsukiji, Kouichi Nehashi, Joel Koerwer
  • Patent number: 10205299
    Abstract: A laser comprising: at least one wavelength selective reflector that comprises a waveguide vertically coupled to at least one photonic crystal resonator, the waveguide and photonic crystal resonator being arranged to provide wave-vector matching between at least one mode of the photonic crystal resonator and at least one mode of the waveguide; an optical gain medium for generating light for coupling into the waveguide, and a reflector at an end of the optical gain medium, the reflector and the photonic crystal resonator defining a laser cavity. Light generated by the optical gain medium is coupled into the waveguide and coupled into the photonic crystal resonator, and partially reflected back to the optical gain medium.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: February 12, 2019
    Assignee: University Court of the University of St Andrews
    Inventors: Kapil Debnath, William Whelan-Curtin
  • Patent number: 10197732
    Abstract: Methods of forming ion-exchanged waveguides in glass substrates are disclosed. In one embodiment, a method of forming a waveguide in an ion-exchanged glass substrate having an ion-exchanged layer extending from a surface to a depth of layer of the ion-exchanged glass substrate includes locally heating at least one band at the surface of the ion-exchanged glass substrate to diffuse ions in the ion-exchanged layer within the at least one band. A concentration of ions within the at least one band is less than a concentration of ions outside of the at least one band, and at least one waveguide is defined within the ion-exchanged layer adjacent the at least one band. In some embodiments, the at least one waveguide is embedded within the ion-exchanged glass substrate such that an upper surface of the at least one waveguide is below the surface of the glass substrate by a depth d.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: February 5, 2019
    Assignee: Corning Optical Communications LLC
    Inventors: Minghan Chen, Ming-Jun Li, Gaozhu Peng
  • Patent number: 10185063
    Abstract: Provided are an optical-diffusion film for display which, particularly when applied to a reflective display device, can efficiently diffuse and emit an external light incident from a wide range of angles toward the front of the display device as image display light, and a reflective display device using the optical-diffusion film.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: January 22, 2019
    Assignee: LINTEC Corporation
    Inventors: Kentaro Kusama, Baku Katagiri, Tomoo Orui, Satoru Shoshi, Hideo Fujikake, Takahiro Ishinabe