Waveguide To Waveguide Patents (Class 385/50)
  • Patent number: 10809457
    Abstract: Provided is an optical circuit element, and more particularly, is an optical circuit element that splits one optical signal into two polarization signals, or couples two polarization signals into one optical signal. The optical circuit element includes a plurality of input couplers to which an optical signal is input, a plurality of output couplers from which an optical signal is output, a first path and a second path configured to connect the input couplers and the second couplers to each other, and at least one wave plate.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: October 20, 2020
    Assignee: Electronics and Telecommuncations Research Institute
    Inventors: Seo Young Lee, Young-Tak Han
  • Patent number: 10809473
    Abstract: A photonic integrated circuit comprises a substrate and a passive layer, which is formed on the substrate and incorporates a passive photonic device. The circuit also comprises a layer of III-V material. The layer of III-V material is arranged in a recess of the passive layer and incorporates an active photonic device. The layer of III-V material is configured such that light can be transferred between the passive photonic device and the active photonic device. This photonic integrated circuit provides the advantages of an active device formed from III-V material in an arrangement that is easily planarized, which enables close integration between the active device and electronic components.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: October 20, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Tom Collins
  • Patent number: 10690858
    Abstract: The evanescent optical coupler is constituted by an IOX waveguide and an optical fiber. The IOX waveguide is formed in a glass substrate and has a tapered section that runs in an axial direction. The IOX waveguide supports a waveguide fundamental mode having an waveguide effective index NW0 that varies within a range ?NW0 as a function of the axial direction. The IOX waveguide can also support a few higher-order modes. The optical fiber supports a fiber fundamental mode having a fiber effective index NF0 that falls within the waveguide effective index range ?NW0 of the waveguide fundamental mode of the tapered section of the IOX waveguide. A portion of the optical fiber is interfaced with the tapered section of the IOX waveguide to define a coupling region over which evanescent optical coupling occurs between the optical fiber and the IOX waveguide.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: June 23, 2020
    Assignee: Corning Incorporated
    Inventors: Lars Martin Otfried Brusberg, Sergey Anatol'evich Kuchinsky, Aramais Robert Zakharian
  • Patent number: 10607877
    Abstract: A chip mounting method includes providing a first substrate including a light transmissive substrate having first and second surfaces, a sacrificial layer provided on the first surface, and a plurality of chips bonded to the sacrificial layer, obtaining first mapping data by testing the chips, the first mapping data defining coordinates of normal chips and defective chips among the chips, disposing a second substrate below the first surface, disposing the normal chips on the second substrate by radiating a first laser beam to positions of the sacrificial layer corresponding to the coordinates of the normal chips, based on the first mapping data, to remove portions of the sacrificial layer thereby separating the normal chips from the light transmissive substrate, and mounting the normal chips on the second substrate by radiating a second laser beam to a solder layer of the second substrate.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: March 31, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Sub Lee, Han Kyu Seong, Yong Il Kim, Sung Hyun Sim, Dong gun Lee
  • Patent number: 10591687
    Abstract: An optical interconnect structure connecting a VCSEL laser or a photodetector to a fiber cable with a 3D polymer waveguide is described. The waveguide has a vertical portion at one end of a horizontal trench portion joined by a 45 degree sidewall. The vertical portion interfaces with VCSEL laser arranged on a flexible circuit board. The other end of the horizontal trench portion connects to a fiber via a mechanical transport connector. The flexible structure also holds driver, receiver, pad, amplifier, RF chip and transmission lines. A method of fabrication includes: patterning a polymer cladding layer into a horizontal trench and a 45 degree side wall by applying multiple exposure techniques; filling horizontal trench and 45 degree side wall cavity to form a core followed by planarizing the core layer to remove excess core; patterning a vertical cavity aligned with the 45 degree side wall to form a reflector.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: March 17, 2020
    Assignee: ADOLITE INC.
    Inventors: Abraham Jou, Paul Mao-Jen Wu
  • Patent number: 10578437
    Abstract: An optical sensor includes an optical device including a microresonator, laid out to guide a light beam along a closed loop optical path, and an injection and/or extraction waveguide, optically coupled to the microresonator; a photodetector, arranged at the output of the injection and/or extraction waveguide; and an analysis device, receiving a signal supplied by the photodetector, and deducing therefrom information relative to a displacement. The microresonator is constituted of a plurality of elementary waveguides spaced apart from each other, and arranged one after the other according to a loop shaped layout. The optical sensor offers increased sensitivity to the measurement of nanometric displacements.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: March 3, 2020
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Boris Taurel, Salim Boutami, Laurent Duraffourg
  • Patent number: 10566693
    Abstract: The disclosure provides a Butler Matrix. The Butler Matrix includes: a plurality of couplers having a circuit of a cuboid structure, a plurality of crossover lines, a plurality of three-dimensional crossover lines having a three-dimensional structure, and a plurality of phase shifters. The phase shifters, the crossover lines, and the three-dimension crossover lines are been coupled between one of the couplers and the other of the couplers.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: February 18, 2020
    Assignee: Industrial Technology Research Institute
    Inventors: Zuo-Min Tsai, Cheng-Hung Hsieh
  • Patent number: 10514487
    Abstract: Light guide assemblies including first, second and third light guides, a first optical coupling component disposed between and attached to the first and second light guides, and a second optical coupling component disposed between and attached to the second and third light guides are described. The first optical coupling component is adapted to couple light between the first and second light guides, and the second optical coupling component is adapted to couple light the between second and third light guides. The first light guide, the second light guide and the first optical coupling component are coextensive over a first region of the assembly, and the second light guide, the third light guide and the second optical coupling component are coextensive over a different second region of the assembly.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: December 24, 2019
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Tao Liu, Brian W. Ostlie, Brent A. Hedding, David C. Mercord, Bradley J. Johanson
  • Patent number: 10386592
    Abstract: An optical engine includes a substrate provided with terminals configured to connect to a connector provided on another substrate, a light receiver/emitter mounted on the substrate, and a cover covering the substrate. The light receiver/emitter is any one of a light receiver, a light emitter, and an element having functions of both the light receiver and the light emitter.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: August 20, 2019
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Satoshi Moriyama, Osamu Daikuhara
  • Patent number: 10367334
    Abstract: A method for manufacturing a laser diode device includes providing a substrate having a surface region and forming epitaxial material overlying the surface region, the epitaxial material comprising an n-type cladding region, an active region comprising at least one active layer overlying the n-type cladding region, and a p-type cladding region overlying the active layer region. The epitaxial material is patterned to form a plurality of dice, each of the dice corresponding to at least one laser device, characterized by a first pitch between a pair of dice, the first pitch being less than a design width. Each of the plurality of dice are transferred to a carrier wafer such that each pair of dice is configured with a second pitch between each pair of dice, the second pitch being larger than the first pitch.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: July 30, 2019
    Assignee: Soraa Laser Diode, Inc.
    Inventors: Melvin McLaurin, Alexander Sztein, Po Shan Hsu, Eric Goutain, Dan Steigerwald, James W. Raring
  • Patent number: 10338329
    Abstract: An optoelectronic device having three substantially planar substrates arranged such that one of the substrates is orthogonal to the other two substrates. In an example embodiment, the first substrate may have one or more photonic devices configured to emit or receive light traveling substantially orthogonally with respect to a major plane of the first substrate. The second substrate has an optical waveguide circuit thereon that is edge-coupled to receive (or transmit) the light from (to) the one or more photonic devices. The third substrate has an electrical circuit thereon and is connected to form an L-shaped junction with the first substrate, the L-shaped junction providing electrical connections between the corresponding electrical transmission lines located on the first and third substrates, e.g., to communicate electrical signals with the one or more photonic devices. In some embodiments, the optoelectronic device can be used to implement an optical transmitter or receiver.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: July 2, 2019
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Yee Leng Low, Nagesh Basavanhally
  • Patent number: 10274675
    Abstract: Apparatuses and methods for photonic communication and photonic addressing are disclosed herein. An example apparatus includes a plurality of photonic sources, a plurality of memory die, a logic die. Each of the plurality of photonic sources provides a photonic signal of a different wavelength and are provided to a first photonic path. Each memory die of the plurality of memory die includes a photonic modulation circuit coupled to the first photonic path, and further includes a photonic detector circuit coupled to a second photonic path. Each memory die of the plurality of memory die is associated with and addressed by a respective wavelength of a photonic signal. The logic die is coupled to the first and second photonic paths, and includes a plurality of photonic circuits. Each of the photonic circuits of the plurality of photonic circuits is associated with a respective wavelength of a photonic signal.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: April 30, 2019
    Assignee: Micron Technology, Inc.
    Inventor: Sion Quinlan
  • Patent number: 10269310
    Abstract: A display panel includes waveguides, wires and a pixel array. The pixel array includes a plurality of pixel units. The pixel units are arranged in a plurality of columns and a plurality of rows. Each pixel unit includes a pixel electrode, a light filtering unit, and a photo transistor. The light filtering unit is coupled to one of the waveguides. The photo transistor is electrically connected to the pixel electrode and one of the wires, and is coupled to the light filtering unit. The waveguide transmits a light control signal. Each wire transmits an electric control signal. The light filtering unit is configured to receive a sub control signal from the waveguides to which the light filtering unit is coupled and filter out a specific optical signal according to the received sub control signal as an input signal of the photo transistor.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: April 23, 2019
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Chih-Che Kuo, Yi-Jheng Wong, Chun-I Wu, Chun-Han Tai, Yi-Hsiang Lai
  • Patent number: 10250335
    Abstract: A photonic integrated chip device having a common optical edge interface is provided and specifically a device comprising: a photonic integrated circuit (PIC) chip comprising: an optical circuit; and an electrical interface configured to receive electrical signals for controlling the optical circuit; and, a common optical interface side of the PIC chip comprising: at least one input configured to receive light into the PIC chip to the optical circuit; and at least one output configured to convey at least one optical signal from the optical circuit out of the PIC chip, the electrical interface located on one or more electrical interface sides of the PIC chip different from the common optical interface side.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: April 2, 2019
    Assignee: RANOVUS INC.
    Inventor: Ryan Murray Hickey
  • Patent number: 10180539
    Abstract: Field-installable mechanical splice connectors for making optical and/or electrical connections in the field are disclosed. One embodiment is a hybrid mechanical splice connector having an electrical portion and an optical portion that includes at least one electrical contact, a shell, and at least one body for receiving at least one field optical fiber and securing the electrical contact. The connector includes a mechanical retention component for securing at least one optical field fiber to the at least one body. Another embodiment is directed to a mechanical splice connector having at least one body for receiving at least one field optical fiber, a mechanical retention component for securing at least one optical field fiber to the at least one body, and at least one lens attached to the at least one body.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: January 15, 2019
    Assignee: Corning Optical Communications LLC
    Inventors: Micah Colen Isenhour, Dennis Michael Knecht, James Phillip Luther
  • Patent number: 10097304
    Abstract: An optical switch, comprising: a first optical waveguide, a first optical add path, a second optical add path and a micro-ring resonator. The micro-ring resonator is operable to add a first optical signal at a preselected wavelength received from the first optical add path to the first optical waveguide to travel in a first direction through the first optical waveguide. The micro-ring resonator is further operable to add a second optical signal at the preselected wavelength received from the second optical add path to the first optical waveguide to travel in a second direction through the first optical waveguide opposite to the first direction. There is also provided an optical drop switch, an optical switching apparatus, an optical communications network node and an optical communications network.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: October 9, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Francesco Testa, Alberto Bianchi
  • Patent number: 10042124
    Abstract: A system (10) and method that facilitates the delivery of power and fiber communications together is provided. The system and method enables quick and easy connection of a hybrid cable (12) to telecommunication equipment. The system provides a sealed robust connection for both conductors (78, 80) and fibers (50) at a single location (56). It can be used to avoid the need for local powering of fiber based communication devices and networks.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: August 7, 2018
    Assignee: COMMSCOPE CONNECTIVITY BELGIUM BVBA
    Inventors: Thierry Mike Declerck, Nicolas De Jaegere
  • Patent number: 9971113
    Abstract: An optical receiver module that recovers signals from a wavelength multiplexed optical signal is disclosed. The optical receiver module includes photodiodes (PDs) arranged in an array by a pitch, an amplifier that integrates trans-impedance amplifiers (TIAs) each corresponding to the PDs, and a sub-mount that mounts the PDs thereon. The sub-mount provides metal patterns on which the PDs are mounted by the flip-chip bonding. The metal patterns compensate a difference between the pitch of the arrayed PDs and another pitch of the TIAs in the amplifier as maintaining the characteristic impedance thereof substantially equal to each other.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: May 15, 2018
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Hiroshi Hara
  • Patent number: 9933581
    Abstract: An optical fiber splicer includes a fiber fixing portion, a first optical fiber fixed to the fiber fixing portion, a clamp portion which is capable of holding and fixing an extending portion extended from the fiber fixing portion of the first optical fiber and a tip portion of a second optical fiber optically connected to the extending portion of the first optical fiber between a base member and a pressing member being openable and closable with respect to the base member, and a solid index matching material which is attached to a tip surface of the extending portion of the first optical fiber and is interposed between the first optical fiber and the second optical fiber.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: April 3, 2018
    Assignees: FUJIKURA LTD., NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takaharu Matsuda, Hung Huu Luong, Tatsuya Ota, Kazuhiro Takizawa, Hiroichi Katayose, Koji Ishizuka, Makoto Shinpo, Kunihiro Toge
  • Patent number: 9904011
    Abstract: An optical waveguide includes a substrate, a first core provided over the substrate and having a first taper region that extends from one side toward the other side and has a sectional area that decreases toward the other side, and a plurality of second cores provided over the substrate and over or under the first core with a first cladding layer sandwiched therebetween and extending in parallel to the substrate and the first core.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: February 27, 2018
    Assignees: FUJITSU LIMITED, NEC CORPORATION
    Inventors: Nobuaki Hatori, Masashige Ishizaka, Takanori Shimizu
  • Patent number: 9897827
    Abstract: Embodiments herein relate to a photonic integrated circuit (PIC) with an on-chip optical isolator. The PIC may comprise a laser, a waveguide coupled with the laser, and a closed loop resonator coupled to the laser through the waveguide. A magneto-optical (MO) layer is over and in contact with the waveguide and the closed loop resonator. The closed loop resonator may comprise a first polarization rotator (PR) and a second PR. A light from the laser in transverse electric (TE) mode through the waveguide is rotated in the first PR to a light in transverse magnetic (TM) mode, and the light in TM mode is rotated in the second PR to light in TE mode. The isolator may further comprise a micro-heater over or along a side of the waveguide and separated from the closed loop resonator; and a feedback control loop connected to the closed loop resonator and the micro-heater.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: February 20, 2018
    Assignee: Intel Corporation
    Inventors: Woosung Kim, Haisheng Rong, John Heck
  • Patent number: 9857531
    Abstract: A system comprises a first optical component comprising at least one waveguide and at least one self-alignment feature; and a second optical component comprising at least another waveguide and at least another self-alignment feature; wherein the self-alignment feature of the second optical component engage to assist in optically-coupling the waveguide of the first optical component and the waveguide of the second optical component when the first optical component has a manufacturing tolerance in a given geometric dimension and is mounted in the second optical component.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: January 2, 2018
    Assignee: International Business Machines Corporation
    Inventors: Russell A. Budd, Daniel M. Kuchta, Benjamin Giles Lee, Laurent Schares, Clint Lee Schow
  • Patent number: 9829631
    Abstract: A method forms a vertical output coupler for a waveguide that propagates light along a horizontal propagation direction, through a waveguide material that overlies a buried oxide layer. The method includes etching the waveguide to remove a portion of the waveguide. The etching forms at least a first plane that is at an edge of the waveguide, is adjacent to the removed portion of the waveguide, and is tilted at a vertical angle between 20 degrees and 70 degrees with respect to the propagation direction. The method further includes coating the first tilted plane with a reflective metal to form a mirror, such that the mirror reflects the light into a direction having a vertical component.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: November 28, 2017
    Assignee: Skorpios Technologies, Inc.
    Inventor: Damien Lambert
  • Patent number: 9806841
    Abstract: An optical switch, comprising: a first optical waveguide, a first optical add path, a second optical add path and a micro-ring resonator. The micro-ring resonator is operable to add a first optical signal at a preselected wavelength received from the first optical add path to the first optical waveguide to travel in a first direction through the first optical waveguide. The micro-ring resonator is further operable to add a second optical signal at the preselected wavelength received from the second optical add path to the first optical waveguide to travel in a second direction through the first optical waveguide opposite to the first direction. There is also provided an optical drop switch, an optical switching apparatus, an optical communications network node and an optical communications network.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: October 31, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Francesco Testa, Alberto Bianchi
  • Patent number: 9768872
    Abstract: An optical transceiver that provides a receiver optical module including a plurality photodiodes (PDs) each biased through internal bias lines, signal lines carrying driving signals to an optical transmitter module, and external bias lines each connected to the internal bias lines. One of the internal bias lines connected to one of the external bias lines arranged closest to the signal lines has a length shorter than lengths of the other internal bias lines so as not to affect EMI noises induced from the signal lines to the other internal bias lines.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: September 19, 2017
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shinta Kasai, Fumihiro Nakajima, Masaaki Ono
  • Patent number: 9692514
    Abstract: Embodiments herein relate to a method in a network node configured in an optical network for enabling a first unit to connect ad-hoc to a second unit in a system configured for remote radio units and main units. The network node receives a connection request from the first unit over the optical network. The network node establishes a connection, to the first unit, for control data. The network node stores control data regarding the first unit. The control data is retrieved from the first unit over the established connection and wherein the control data enables the first unit to connect/be connected ad-hoc to the second unit for transferring user data over a physical path through the optical network.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: June 27, 2017
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventor: Kim Laraqui
  • Patent number: 9684194
    Abstract: An electro-optic device, comprising a layer of light-carrying material; and a rib, projecting from the layer of light-carrying material, for guiding optical signals propagating through the device. The layer of light-carrying material comprises a first doped region of a first type extending into the rib, and a second doped region of a second, different type extending into the rib such that a pn junction is formed within the rib. The pn junction extends substantially parallel to at least two contiguous faces of the rib, resulting in a more efficient device. In addition, a self-aligned fabrication process can be used in order to simplify the fabrication process and increase reliability and yield.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: June 20, 2017
    Assignee: University of Southampton
    Inventors: Frederic Gardes, David Thomson, Graham Reed
  • Patent number: 9570876
    Abstract: A supercontinuum optical pulse source provides a combined supercontinuum. The supercontinuum optical pulse source comprises one or more seed pulse sources, and first and second optical amplifiers arranged along first and second respective optical paths. The first and second optical amplifiers are configured to amplify one or more optical signals generated by said one or more seed pulse sources. The supercontinuum optical pulse source further comprises a first microstructured light-guiding member arranged along the first optical path and configured to generate supercontinuum light responsive to an optical signal propagating along said first optical path, and a second microstructured light-guiding member arranged along the second optical path and configured to generate supercontinuum light responsive to an optical signal propagating along said second optical path.
    Type: Grant
    Filed: January 31, 2016
    Date of Patent: February 14, 2017
    Assignee: Fianium Ltd.
    Inventors: John Redvers Clowes, Anatoly Borisovich Grudinin, Adam Devine
  • Patent number: 9563016
    Abstract: A method for reducing loss in a subwavelength photonic crystal waveguide bend is disclosed. The method comprising: forming the subwavelength photonic crystal waveguide bend with a series of trapezoidal shaped dielectric pillars centered about a bend radius; wherein each of the trapezoidal shaped dielectric pillars comprise a top width, a bottom width, and a trapezoid height; wherein the length of the bottom width is greater than the length of the top width; and wherein the bottom width is closer to the center of the bend radius of the subwavelength photonic crystal waveguide bend than the top width. Other embodiments are described and claimed.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: February 7, 2017
    Assignee: Omega Optics, Inc.
    Inventors: Xiaochuan Xu, Ray T. Chen
  • Patent number: 9553668
    Abstract: Embodiments herein relate to a method in a network node configured in an optical network for enabling a first unit to connect ad-hoc to a second unit in a system configured for remote radio units and main units. The network node receives a connection request from the first unit over the optical network. The network node establishes a connection, to the first unit, for retrieving control data. The network node stores control data regarding the first unit. The control data is retrieved from the first unit over the established connection and wherein the control data enables the first unit to connect/be connected ad-hoc to the second unit for transferring user data over a physical path through the optical network.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: January 24, 2017
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventor: Kim Laraqui
  • Patent number: 9547187
    Abstract: An electro-optic device, comprising an insulating layer and a layer light-carrying material adjacent the insulating layer. The layer of light-carrying material, such as silicon, comprises a first doped region of a first type and a second doped region of a second, different type abutting the first doped region to form a pn junction. The first doped region has a first thickness at the junction, and the second doped region has a second thickness at the junction, the first thickness being greater than the second thickness, defining a waveguide rib in the first doped region for propagating optical signals. Since the position of the junction coincides with the sidewall of the waveguide rib a self-aligned process can be used in order to simplify the fabrication process and increase yield.
    Type: Grant
    Filed: January 2, 2015
    Date of Patent: January 17, 2017
    Assignee: University of Southampton
    Inventors: David Thomson, Frederic Gardes, Graham Reed
  • Patent number: 9515923
    Abstract: Embodiments of the present invention disclose a method and a device for processing an interconnected ring in multi-protocol label switching. The method includes classifying to-be-processed services as a single ring service for an original ring and a cross-ring service for an interconnected ring corresponding to the original ring, determining information about a virtual point corresponding to the interconnected ring, creating a virtual channel of the original ring according to the information about the virtual point, using the virtual channel to forward the cross-ring service to the interconnected ring, and processing the single ring service according to a pre-created actual channel of the original ring.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: December 6, 2016
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Wenyang Zhang, Hengguang Cai, Jian Ye, Yang Yang
  • Patent number: 9435949
    Abstract: An optical integrated circuit formed on a substrate includes a light source, a spot size converter section configured to convert a spot size of light emitted from the light source, a waveguide section connected to the spot size converter section, and an active section connected to the waveguide section, layers sequentially a lower clad layer, core layer, shared layer, and upper clad layer on the substrate, makes a refractive index of the shared layer greater than refractive indices of the lower clad layer and upper clad layer and less than a refractive index of the core layer, and makes the spot size converter section, the waveguide section, and the active section share the shared layer. Accordingly, it is possible to provide an optoelectric integrated circuit by which both a simplification in a manufacturing process and a high efficiency in optical coupling between a light source and a waveguide are achieved.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: September 6, 2016
    Assignee: NEC CORPORATION
    Inventor: Takanori Shimizu
  • Patent number: 9423565
    Abstract: Planar waveguide apparatus provides a waveguide at least partially overlying a passive buried rib waveguide for coupling optical radiation there between. The overlying waveguide has at least one tapered section, the width of the taper determining the degree of coupling between the waveguides at points along the tapered section. The overlying waveguide may have an active core region. The passive buried rib may have one or more unguided sections below electrically driven regions of the active waveguide to avoid parasitic modes and/or may provide a grating for use as a filter or feedback. Variations include a branched passive waveguide for coupling to two or more overlying waveguides and two or more aligned and active overlying waveguides coupling to one passive waveguide, there being a break in a shared core region of the active waveguides to provide electrical isolation between them.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: August 23, 2016
    Assignee: The Centre for Integrated Photonics, Ltd.
    Inventors: Ian Lealman, Michael Robertson
  • Patent number: 9405063
    Abstract: An integrated circuit includes a substrate, a metal grating disposed over the substrate, and a waveguide layer disposed over or under the metal grating. The metal grating is arranged to change a propagation direction of an optical signal and the waveguide layer is arranged to guide the optical signal to a desired direction.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: August 2, 2016
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Jui Hsieh Lai, Tien-I Bao, Hai-Ching Chen, Ying-Hao Kuo
  • Patent number: 9379276
    Abstract: There are provided an optical interconnection module and an optical-electrical hybrid board using the same to process optical and electric signals on a board at a low transmission loss at high speed in transmitting high-speed optical signals sent and received between chips or between boards in a data processing apparatus. An optical interconnection module has a structure in which an optical signal is emitted from a laser optical source device, propagates the inside of a modulator device, and is deflected by a beam turning structure in the vertical direction of a substrate, an optical signal is incident from the outside of a semiconductor substrate, and transmitted and received at a photo diode provided on the semiconductor substrate, and the optical signals are optically connected to each other through the inside of the semiconductor substrate in the vertical direction of the substrate with the outside of the semiconductor substrate.
    Type: Grant
    Filed: January 1, 2015
    Date of Patent: June 28, 2016
    Assignee: Hitachi, Ltd.
    Inventors: Yasunobu Matsuoka, Toshiki Sugawara, Tatemi Ido
  • Patent number: 9360638
    Abstract: An optical transmission body includes a substrate having a through hole penetrating therethrough in a thickness direction thereof; a cladding member at least a part of which is positioned to be filled in the through hole, and which has an optical waveguide hole which is positioned inside the through hole and penetrates through the cladding member in a thickness direction thereof and a guide hole portion which is positioned away from the optical waveguide hole and is concave in the thickness direction; and a core member disposed inside the optical waveguide hole.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: June 7, 2016
    Assignee: Kyocera Corporation
    Inventors: Maraki Maetani, Yuji Masuda
  • Patent number: 9360688
    Abstract: An optical modulator may include a lower waveguide, an upper waveguide, and a dielectric layer disposed therebetween. In one embodiment, the lower waveguide may include a u-shaped region within an optical mode of the light passing through the optical modulator. By conforming the dielectric layer to the surfaces of the u-shaped region, the amount of area of the dielectric layer within a charge modulation region is increased relative to forming the dielectric layer on a single plane. Folding the dielectric layer in this manner may improve modulation efficiency. In one embodiment, the u-shaped region is formed by using ridge structures that extend from an upper surface of the lower waveguide towards the upper waveguide. To aid in lateral confinement of the optical mode, the dielectric layer may be deposited on one side surface of the ridge structures while a different dielectric material is deposited on the opposite side surface.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: June 7, 2016
    Assignee: Cisco Technology, Inc.
    Inventors: Vipulkumar Patel, Prakash Gothoskar, Sean Anderson
  • Patent number: 9239475
    Abstract: An apparatus includes an optical semiconductor element comprising: a waveguide into which input light is input; a plurality of ring modulators that have different optical perimeter lengths and are optically coupled to the waveguide; and a control unit configured to selectively apply a modulation signal to at least one of the plurality of ring modulators having a resonant wavelength that is the same as a wavelength of the input light.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: January 19, 2016
    Assignee: FUJITSU LIMITED
    Inventor: Tomoyuki Akiyama
  • Patent number: 9192307
    Abstract: An imaging guidewire can include one or more optical fibers communicating light along the guidewire. At or near its distal end, one or more blazed or other fiber Bragg gratings (FBGs) directs light to a photoacoustic transducer material that provides ultrasonic imaging energy. Returned ultrasound is sensed by an FBG sensor. A responsive signal is optically communicated to the proximal end of the guidewire, and processed to develop a 2D or 3D image. In one example, the guidewire outer diameter is small enough such that an intravascular catheter can be passed over the guidewire. Techniques for improving ultrasound reception include using a high compliance material, resonating the ultrasound sensing transducer, using an attenuation-reducing coating and/or thickness, and/or using optical wavelength discrimination. Techniques for improving the ultrasound generating transducer include using a blazed FBG, designing the photoacoustic material thickness to enhance optical absorption.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: November 24, 2015
    Assignee: Vascular Imaging Corporation
    Inventors: Kenneth N. Bates, Gil M. Vardi
  • Patent number: 9164236
    Abstract: Coupled-resonator optical waveguides (CROW) can be used to control a speed of an optical signal. In particular, the coupling distance between the resonators can be adjusted to precisely control a group delay of an optical wave. Systems and methods are described to control such coupling distance in a CROW.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: October 20, 2015
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Hsi-Chun Liu, Amnon Yariv
  • Patent number: 9149191
    Abstract: An imaging guidewire can include one or more optical fibers communicating light along the guidewire. At or near its distal end, one or more blazed or other fiber Bragg gratings (FBGs) directs light to a photoacoustic transducer material that provides ultrasonic imaging energy. Returned ultrasound is sensed by an FBG sensor. A responsive signal is optically communicated to the proximal end of the guidewire, and processed to develop a 2D or 3D image. In one example, the guidewire outer diameter is small enough such that an intravascular catheter can be passed over the guidewire. Techniques for improving ultrasound reception include using a high compliance material, resonating the ultrasound sensing transducer, using an attenuation-reducing coating and/or thickness, and/or using optical wavelength discrimination. Techniques for improving the ultrasound generating transducer include using a blazed FBG, designing the photoacoustic material thickness to enhance optical absorption.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: October 6, 2015
    Assignee: Vascular Imaging Corporation
    Inventors: Kenneth N. Bates, Gil M. Vardi
  • Patent number: 9122015
    Abstract: The present invention is an optical interconnect structure characterized by that it comprises an optical waveguide comprising a first core and a connective optical waveguide which is formed on the optical waveguide and comprises a second core, and that a first diffraction grating formed in the first core and a second diffraction grating formed into the second core are arranged such that at least a part of the former faces a part of the latter.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: September 1, 2015
    Assignee: NEC CORPORATION
    Inventor: Takanori Shimizu
  • Patent number: 9116413
    Abstract: Electro-optic modulator includes a substrate, a waveguide formed in a top surface of the substrate, first modulating electrodes and second modulating electrodes. The waveguide includes a Y-shaped incident member, a Y-shaped output member, and first and second connection members. The Y-shaped incident member includes an incident portion, first and second incident branches. The Y-shaped output member includes an output portion, a first and second output branches. The first connection member includes a first branch and a second branch. The second connection member includes a third branch and a fourth branch. The first branch and the second branch are interconnected between the first incident branch and the first output branch and arranged in parallel. The third branch and the fourth branch are interconnected between the second incident branch and the second output branch and arranged in parallel.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: August 25, 2015
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Hsin-Shun Huang
  • Patent number: 9116305
    Abstract: An arrayed waveguide grating provided with a first slab waveguide formed on a substrate; a second slab waveguide formed on the substrate; a first input/output waveguide connected to the first slab waveguide; a second input/output waveguide connected to the second slab waveguide; two or more channel waveguide groups connecting the first and second slab waveguides, each of the channel waveguide groups formed of an aggregate of a plurality of channel waveguides having path lengths sequentially becoming longer by a predetermined path length difference; and an optical filter arranged in at least one of the first and second slab waveguides.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: August 25, 2015
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Hirotaka Nakamura, Shinya Tamaki, Shunji Kimura, Takayuki Mizuno, Hiroshi Takahashi, Mikitaka Itoh, Tsutomu Kitoh
  • Patent number: 9110219
    Abstract: Devices and systems which include on-chip waveguides with flattened dispersion are described. In one aspect, silicon nitride slot waveguides that exhibit four zero-dispersion wavelengths with a flattened dispersion over a wavelength range of 500 nm are obtained. The disclosed silicon nitride slot waveguides are used to generate a two-octave supercontinuum from 630 nm to 2650 nm, enabling (a) on-chip generation of 5 fs optical pulses as short as 1.3 cycles, and (b) sensitive single-shot measurements of the absolute carrier-envelope phase using a single integrated waveguide. In another aspect, silicon slot waveguides that exhibits four zero-dispersion wavelengths with a flattened dispersion over a wavelength range of 670-nm are obtained. An octave-spanning supercontinuum is generated in the disclosed silicon slot waveguide, over a wavelength range from 1217 nm to 2451 nm, approximately from bandgap wavelength to half-bandgap wavelength.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: August 18, 2015
    Assignee: University of Southern California
    Inventors: Lin Zhang, Yan Yan, Yang Yue, Alan E. Willner
  • Patent number: 9075206
    Abstract: There is provided an optical waveguide device. The device includes: a wiring substrate having a first opening portion therein and including: a substrate having an upper surface and a lower surface opposite to the upper surface; an upper side wiring layer formed on the upper surface of the substrate, and a lower side wiring layer formed on the lower surface of the substrate, an optical waveguide formed on the lower side wiring layer; a first optical element connected to the upper side wiring layer; a first circuit element electrically connected to the first optical element through the upper side wiring layer; a second optical element connected to the lower side wiring layer through the first opening portion; and a second circuit element electrically connected to the second optical element through the lower side wiring layer.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: July 7, 2015
    Assignee: SHINKO ELECTRIC INDUSTRIES CO., LTD.
    Inventor: Kenji Yanagisawa
  • Patent number: 9052291
    Abstract: An optical sensor based on a broadband light source and cascaded waveguide filters comprises a broadband light source, an input waveguide, a reference ring resonator coupled with the input waveguide, a common bus waveguide coupled with the reference ring resonator, a sensing ring resonator coupled with the common bus waveguide, an output waveguide coupled with the sensing ring resonator, and two optical power detectors. At least a portion of the sensing ring resonator is influenced by the physical parameter to be measured or in contact with an analyte. The variation of the physical parameter to be measured or the variation of the analyte induces a shift of the transmission spectrum of the sensing ring resonator. By using the cascaded filtering effect of the double resonators, the wavelength shift can be translated into a variation of the total output power. Consequently the physical parameter to be measured can be easily deduced.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: June 9, 2015
    Assignee: Zhejiang University
    Inventors: Jian-Jun He, Lei Jin, Mingyu Li
  • Patent number: 9040919
    Abstract: Disclosed are systems and methods for improving the performance of systems for generating and detecting electromagnetic radiation at terahertz (THz) frequencies. Embodiments of the systems and methods include the fabrication and use of coupling tapers to provide efficient transfer of THz radiation between a photomixer and a waveguide that supports a propagating THz mode. A representative system comprises of a photomixer to convert high-frequency components of an optical pump signal into corresponding electrical THz frequencies, a waveguide that supports a propagating THz mode, and a matching taper that effectively converts the highly localized currents generated by the photomixer to the mode supported by the waveguide.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: May 26, 2015
    Inventors: Thomas E. Darcie, Hamid Pahlevaninezhad
  • Patent number: 9042692
    Abstract: An optical fiber for use as a stub fiber in an optical fiber connector is disclosed. The optical fiber is configured with a segmented core that includes a single-mode segment with a step-index profile and at least one multimode segment having at least one alpha profile. A connector that employs the stub fiber can connect to both a single mode fiber and a multimode fiber.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: May 26, 2015
    Assignee: Corning Cable Systems LLC
    Inventors: Ming-Jun Li, Gaozhu Peng