Input/output Coupler Patents (Class 385/31)
  • Patent number: 8774575
    Abstract: An optical waveguide includes a clad layer, a core layer and a clad layer which are laminated together in this order from a lower side thereof. Within the core layer, a core portion and a side clad portion provided adjacent to the core portion so as to surround side surfaces of the core portion are formed. Further, a part of the side clad portion prevents a left side end of the core portion from being exposed outside. A mirror formation region is constituted from a region consisting of such a part of the side clad portion and a part of each of the clad layers located thereabove and therebelow. This mirror formation region is subjected to digging processing so that a concave portion is formed. An inner surface of this concave portion serves as the mirror. From the mirror, a material other than a material constituting the core portion, that is, a material constituting each of the clad layers and a material constituting the side clad portion are exposed.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: July 8, 2014
    Assignee: Sumitomo Bakelite Company Limited
    Inventors: Makoto Fujiwara, Kenji Miyao, Yoji Shirato, Koji Choki, Mutsuhiro Matsuyama
  • Publication number: 20140185979
    Abstract: A photonic integrated circuit is provided that may include a substrate; one or more optical sources, on the substrate, to output light associated with a corresponding one or more optical signals; one or more waveguides connected to the one or more optical sources; a multiplexer connected to the one or more waveguides; and one or more light absorptive structures, located on the substrate adjacent to one of the one or more optical sources, one of the one or more waveguides, and/or the multiplexer, to absorb a portion of the light associated with at least one of the corresponding one or more optical signals.
    Type: Application
    Filed: December 31, 2012
    Publication date: July 3, 2014
    Applicant: Infinera Corporation
    Inventors: Peter Weindel Evans, Pavel Viktorovich Studenkov, Mehrdad Ziari, Matthias Kuntz
  • Patent number: 8768120
    Abstract: An optical assembly includes a combination of laser sources emitting radiation, focused by a combination of lenses into optical waveguides. The optical waveguide and the laser source are permanently attached to a common carrier, while at least one of the lenses is attached to a holder that is an integral part of the carrier, but is free to move initially. Micromechanical techniques are used to adjust the position of the lens and holder, and then fix the holder it into place permanently using integrated heaters with solder.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: July 1, 2014
    Assignee: Kaiam Corp.
    Inventors: Bardia Pezeshki, John Heanue
  • Patent number: 8768108
    Abstract: A solid state light source comprising a light pump outputting light energy; a waveguide optically coupled to the light pump source for receiving the light energy; and a down-converter for converting the light energy from the waveguide to a lesser light energy.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: July 1, 2014
    Assignee: The Regents of the University of Michigan
    Inventors: Pei-Cheng Ku, Max Shtein
  • Patent number: 8768117
    Abstract: There are provided an optical fiber coupler configured to improve or optimize optical efficiency and coupling efficiency, a method of manufacturing the optical fiber coupler, and an active optical module. The optical fiber coupler includes a first optical fiber and second optical fibers. The first optical fiber includes a first core and a first cladding surrounding the first core, and the second optical fibers are coupled to the first cladding. The first cladding includes a first coupling facet to which ends of the second optical fibers are coupled.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: July 1, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hong-Seok Seo, Joon Tae Ahn, Bong Je Park
  • Patent number: 8766092
    Abstract: An energy collection system is provided. The system can include an energy collection device and an energy concentration device disposed proximate at least a portion of the energy collection device. The energy concentration device includes a non-periodic, sub-wavelength, dielectric grating.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: July 1, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhen Peng, Marco Fiorentino, David A. Fattal, Nathaniel J. Quitoriano
  • Patent number: 8768119
    Abstract: An optical assembly includes a combination of laser sources emitting radiation, focused by a combination of lenses into optical waveguides. The optical waveguide and the laser source are permanently attached to a common carrier, while at least one of the lenses is attached to a holder that is an integral part of the carrier, but is free to move initially. Micromechanical techniques are used to adjust the position of the lens and holder, and then fix the holder it into place permanently using integrated heaters with solder.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: July 1, 2014
    Assignee: Kaiam Corp.
    Inventors: Bardia Pezeshki, John Heanue
  • Patent number: 8761550
    Abstract: A method for installing an optical tap into an optical waveguide formed in a printed circuit board which comprises obtaining a printed circuit board having an optical waveguide formed therein, cutting a transverse groove that has a front plane and a back plane into the optical waveguide, such that the back plane of the groove forms an oblique angle relative to the incident beam of light, and inserting a pre-fabricated beamsplitter into the groove so that the beamsplitter is positioned at the oblique angle of incidence relative to the beam of light to enable a predetermined portion of the beam of light to be directed out of the waveguide.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: June 24, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Michael Renne Ty Tan, Paul Kessler Rosenberg, Terrel Morris, Shih-Yuan Wang
  • Patent number: 8761556
    Abstract: A new concept of the light guide device has developed to have multi channels, the present invention comprises: a transparent body through which light can freely pass; channel condensing units disposed at predetermined intervals on the body to form a plurality of one-dimensional arrays; an optical module unit for independently sighting incident light, and re-sighting and focusing light which passes through the one-dimensional arrays formed by the channel condensing units disposed at predetermined intervals in the body; and a fiber channel module for creating independent light passages (fiber channels) which condense light from the left, right, up and down aspects of the optical module unit, at a one-to-one correspondence between the body and the optical module unit. The present device maximizes the efficiency of the solar energy utilization by reducing the guide distance of incident light.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: June 24, 2014
    Inventors: Taerok Jung, Jaeheun Jung
  • Patent number: 8761557
    Abstract: The present invention provides a compact optical fiber amplifier, which can minimize the size of an optical module and increase the degree of freedom in mounting the module on a board. The compact optical fiber amplifier according to the present invention includes: an optical module including a plurality of optical elements provided therein, an input port for introducing an optical fiber thereinto, and an outlet port for extract the optical fiber to the outside of the module; and a plurality of optical fibers introduced into or extracted from the optical module through the input port or the outlet port of the optical module and disposed above a predetermined radius of curvature on the outside of the optical module.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: June 24, 2014
    Assignee: Licomm Co., Ltd.
    Inventors: Sung Jun Kim, Jeong Mee Kim, Soo Young Yoon, Meong Kyu Choi, Jung Kwon Lee
  • Publication number: 20140168631
    Abstract: Methods and apparatus for light detecting and range sensing. In one approach, a light detecting and ranging (LiDAR) sensor uses an optical directing device; a multi-clad optical fiber, a light source, and a detector. The light source is optically coupled to the multi-clad optical fiber which is configured to receive optical rays transmitted from the light source and route the rays on an optical path leading to the optical directing device. The optical directing device is configured both to direct the transmitted optical rays routed through the multi-clad fiber towards a target to be sensed and direct optical rays reflected from the target on an optical path leading to the multi-clad optical fiber. The multi-clad optical fiber is configured to receive the reflected optical rays and route the reflected optical rays on an optical path leading to the detector. The detector is configured to detect the reflected optical rays.
    Type: Application
    Filed: October 9, 2013
    Publication date: June 19, 2014
    Applicant: Pouch Holdings LLC
    Inventors: James A. HASLIM, Michael D. KARASOFF, Nicholas M. ITURRARAN, Brent S. SCHWARZ
  • Patent number: 8755649
    Abstract: An optical connector having a plurality of directional taps and connecting between a plurality of optical waveguides (e.g., such as a connector between a waveguide that is part of, or leads from, a seed laser and/or an initial optical-gain-fiber power amplifier, and a waveguide that is part of, or leads to, an output optical-gain-fiber power amplifier and/or a delivery fiber), wherein one of the directional taps extracts a small amount of the forward-traveling optical output signal from the seed laser or initial power amplifier (wherein this forward-tapped signal is optionally monitored using a sensor for the forward-tapped signal), and wherein another of the directional taps extracts at least some of any backward-traveling optical signal that may have been reflected (wherein this backward-tapped signal is optionally monitored using a sensor for the backward-tapped signal).
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: June 17, 2014
    Assignee: Lockheed Martin Corporation
    Inventors: Tolga Yilmaz, Khush Brar, Charles A. Lemaire
  • Patent number: 8755647
    Abstract: A frequency-chirped nano-antenna provides efficient sub-wavelength vertical emission from a dielectric waveguide. In one example, this nano-antenna includes a set of plasmonic dipoles on the opposite side of a SiYV4 waveguide from a ground plane. The resulting structure, which is less than half a wavelength long, emits a broadband beam (e.g., >300 nm) that can be coupled into an optical fiber. In some embodiments, a diffractive optical element with unevenly shaped regions of high- and low-index dielectric material collimates the broadband beam for higher coupling efficiency. In some cases, a negative lens element between the nano-antenna and the diffractive optical element accelerates the emitted beam's divergence (and improves coupling efficiency), allowing for more compact packaging.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: June 17, 2014
    Assignee: Massachusetts Institute of Technology
    Inventors: Ami Yaacobi, Brad Gilbert Cordova, Jie Sun, Michael Watts
  • Patent number: 8755650
    Abstract: A light source is coupled to an input facet that directs light from the light source to a core layer of a waveguide and a gradient index material layer disposed beside the core layer along a portion of a propagation length of the waveguide. Light is launched from the light source into the input facet. In response, the gradient index material layer directs light to the core layer at least along the portion of the propagation length.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: June 17, 2014
    Assignee: Seagate Technology LLC
    Inventor: Chubing Peng
  • Publication number: 20140158872
    Abstract: A coupling device for an optical waveguide includes an optical waveguide connection for a first optical waveguide. The coupling device includes an optical filter arranged in a beam path between a laser light source and the optical waveguide connection which reflects light of a first wavelength range or a first polarization direction and transmits light of a second wavelength range or a second polarization direction.
    Type: Application
    Filed: April 12, 2012
    Publication date: June 12, 2014
    Applicants: VIMECON GMBH, INGENERIC GMBH
    Inventors: Jan Kallendrusch, Volker Sinhoff, Christian Wessling, Kai Ulf Markus
  • Patent number: 8750658
    Abstract: An optical coupling module includes a substrate, a circuit board defining two through holes, an optical waveguide positioned between the substrate and the circuit board, and an optical assembly. The optical waveguide includes a core and a clad, each core comprises two coupling surfaces corresponding to the two through holes. At least one coupling surfaces is in an arcuate shape. The clad covers the core, except for the two coupling surfaces exposing out of the clad. The optical assembly formed on the circuit board comprises an optical emitting element and an optical receiving element. The optical emitting element and the optical receiving element are positioned above the two through holes, respectively. Light emitted from the optical emitting element enters the optical waveguide via one of the coupling surface, and leaves from another coupling surface to reach the optical receiving element. The coupling surface is capability of focusing light.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: June 10, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Bing-Heng Lee
  • Patent number: 8750656
    Abstract: An optical adapter includes a loading plate and a coupling lens. The coupling lens includes a main body, a first optical reflector, and a second optical reflector. The first optical reflector is positioned on the loading plate. The main body includes a top plate made of transparent material and spaced a predetermined distance from the loading plate. The second optical reflector is positioned on the first top plate. The first loading plate loads a portion of a planar optical waveguide of an optical printed circuit board. An optical signal from the planar optical waveguide is reflected by the first optical reflector to the second optical reflector, then is reflected by the second optical reflector to the outside of the optical adapter.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: June 10, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Kai-Wen Wu
  • Patent number: 8743371
    Abstract: A Mach-Zehnder interferometer (MZI) incorporates a tunable multimode interference (MMI) coupler comprising a tunable MMI coupler with a tuning electrode on a surface of a tunable MMI region and an electrically insulating region provided within the tunable MMI region. The MMI region is tunable in response to detection of a photocurrent by a photodetector section. Such a tunable MZI is particularly advantageous in enabling a split ratio of an optical splitter, the split ratio and the splitter to be controlled in a particularly efficient manner.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: June 3, 2014
    Assignee: Oclaro Technology Limited
    Inventors: Lloyd Langley, Robert Griffin, Ian Brian Betty
  • Patent number: 8744221
    Abstract: An apparatus consisting of stacked slab waveguides whose outputs are vertically staggered is disclosed. At the input to the stacked waveguides, the entrances to each slab lie in approximately the same vertical plane. A spot which is imaged onto the input will be transformed approximately to a set of staggered rectangles at the output, without substantial loss in brightness, which staggered rectangles can serve as a convenient input to a spectroscopic apparatus. A slit mask can be added to spatially filter the outputs so as to present the desired transverse width in the plane of the spectroscopic apparatus parallel to its dispersion.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: June 3, 2014
    Assignee: Redox Biomedical, Inc.
    Inventors: Sascha Hallstein, Jan Lipson, Donald A. Ice, Rudolf J. Hofmeister, Ueyn L. Block
  • Patent number: 8744220
    Abstract: An optical waveguide device which is free from interference with an optical path between a light emitting element and an optical waveguide thereof, and to provide a method of manufacturing the optical waveguide device. A light emitting element (5) is provided on an upper surface of a first under-cladding layer (21), and a second under-cladding layer (22) is provided on the upper surface of the first under-cladding layer (21), covering the light emitting element (5). A core 3 which receives light emitted from the light emitting element (5) through the second under-cladding layer (22) is provided on an upper surface of the second under-cladding layer (22). The core (3) is located in a position such that the light emitted from the light emitting element (5) is incident on the core (3).
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: June 3, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Sazzadur Rahman Khan, Kazunori Mune
  • Patent number: 8737779
    Abstract: An optical wavelength multi/demultiplexer having transmission characteristics with a higher rectangular degree than a conventional one includes an AWG and two-stage lattice circuit. An example of a two-stage lattice circuit according to the present invention includes an input waveguide, a third optical coupler, a third and fourth arm waveguides, a second optical coupler, a first and second arm waveguides, a first optical coupler, and output waveguides. The optical path length differences between the third and fourth arm waveguides and between the first and second arm waveguides are designed to be ?L. The path passing the third and first arm waveguides differs by 2·?L in optical length from that the fourth and second arm waveguides. The paths passing the third and second arm waveguides and passing the fourth and first arm waveguides differ by ?L from that passing the fourth and second arm waveguides.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: May 27, 2014
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Tsutomu Kitoh, Shin Kamei, Toshikazu Hashimoto, Yohei Sakamaki, Hiroshi Takahashi, Manabu Oguma
  • Patent number: 8737783
    Abstract: A light guiding plate may include a substrate, a waveguide, and a reflective metal. The waveguide and the reflective metal may be formed on the substrate. The waveguide may guide light. The reflective metal may reflect the light guided along the waveguide to change a propagation direction of the light. A light guiding plate may include a substrate, a cladding layer, and a plurality of waveguides. The cladding layer may be formed on the substrate. The cladding layer may include a first insulating layer having a first refractive index. The plurality of waveguides may be formed on the cladding layer. The plurality of waveguides may include a second insulating layer having a second refractive index. The second refractive index may be higher than the first refractive index. The plurality of waveguides may guide light provided by a light emitting element. At least two of the waveguides may have different lengths.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: May 27, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yu-Sik Kim
  • Publication number: 20140140091
    Abstract: An illumination system employing a waveguide. Light received from an edge or an end of a waveguide is propagated in response to transmission and total internal reflection. Light deflecting elements distributed along the propagation path of light continuously change the out-of-plane propagation angle of light rays and cause decoupling of portions of the propagated light from the core of the waveguide at different distances from the light input edge or end. Light escapes from the waveguide into an intermediate layer at low out-of-plane angles and is further redirected by light extraction features out of the system. In one embodiment, the illumination system is configured to emit collimated light. In one embodiment, the illumination system includes shallow surface relief features. In one embodiment, the light deflecting elements include forward-scattering particles distributed throughout the volume of the waveguide. Additional collimating and non-collimating illumination units and methods are also disclosed.
    Type: Application
    Filed: November 20, 2012
    Publication date: May 22, 2014
    Inventor: Sergiy Victorovich Vasylyev
  • Patent number: 8731349
    Abstract: The present invention relates to an integrated photonic device (100) operatively coupleable with an optical element (300) in a first coupling direction. The integrated photonic device (100) comprises an integrated photonic waveguide (120) and a grating coupler (130) that is adapted for diffracting light from the waveguide (120) into a second coupling direction different from the first coupling direction. The integrated photonics device also comprises a refractive element (110) disposed adjacent the grating coupler (130) and adapted to refract the light emerging from the grating coupler (130) in the second coupling direction into the first coupling direction.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: May 20, 2014
    Assignees: IMEC, Universiteit Gent
    Inventors: Jonathan Schrauwen, Stijn Scheerlinck, Günther Roelkens, Dries Van Thourhout
  • Publication number: 20140133802
    Abstract: An optical receptacle is disposed between a photoelectric conversion device and an optical fiber, in which photoelectric conversion device a light-emitting element and a light-receiving element that receives monitor light for monitoring light emitted from the light-emitting element are mounted on substrate. Light of the light-emitting element that has been incident on a first surface is reflected by a first reflective surface, and then is separated by a light separating section into monitor light and light to be coupled with a fiber end. The monitor light is emitted from the first surface towards the light-receiving element side. The light to be coupled with the fiber end is emitted from a second surface towards the fiber end side. A traveling direction of the light reaching the second surface from the first reflective surface is maintained at a reflection direction of the first reflective surface.
    Type: Application
    Filed: July 13, 2012
    Publication date: May 15, 2014
    Applicant: ENPLAS CORPORATION
    Inventor: Shimpei Morioka
  • Patent number: 8724943
    Abstract: An APC receptacle stub and an APC TOSA having the same are provided. The APC receptacle stub includes a first APC stub and a second APC stub. The first APC stub has an optical fiber inserted thereto and is provided with one end section polished in an APC shape. The second APC stub has an optical fiber inserted thereto and is provided with one end section polished in an APC shape and an opposite end section which is coupled to an opposite end section of the first APC stub through rotation adjustment in the same axial direction as an axial direction of the opposite end section of the first APC stub. The APC receptacle stub enables easy optical alignment and is applicable to a light source that is sensitive to reflection.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: May 13, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jong-Hoon Lee, Seung-Hyun Cho, Jie-Hyun Lee, Sang-Soo Lee, Eun-Gu Lee, Han-Hyub Lee
  • Patent number: 8724941
    Abstract: An aspect of the present disclosure may include an apparatus having an optical waveguide. The optical waveguide may have a distal end surface non-normal to a longitudinal centerline of a distal end portion of the optical waveguide, wherein the distal end surface may define a portion of an interface configured to redirect electromagnetic radiation propagated from within the optical waveguide and incident on the portion of the interface to a direction offset from the longitudinal centerline. The apparatus may further include a capillary component which may have a first portion of an inner surface heat-fused to a portion of an outer surface of the optical waveguide.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: May 13, 2014
    Assignee: Boston Scientific Scimed, Inc.
    Inventor: Kenneth Reever
  • Patent number: 8724942
    Abstract: Light-coupling systems and methods that employ light-diffusing optical fiber are disclosed. The systems include a light source and a light-diffusing optical fiber optically coupled thereto. The light-diffusing optical fiber has a core, a cladding and a length. At least a portion of the core comprises randomly arranged voids configured to provide substantially spatially continuous light emission from the core and out of the cladding along at least a portion of the length. A portion of the light-diffusing optical is embedded in an index-matching layer disposed adjacent a lower surface of a transparent sheet. Light emitted by the light-diffusing optical fiber is trapped within the transparent sheet and index-matching layer by total internal reflection and is scattered out of the upper surface of the transparent sheet by at least one scattering feature thereon.
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: May 13, 2014
    Assignee: Corning Incorporated
    Inventors: Stephan Lvovich Logunov, Paul John Shustack
  • Patent number: 8724948
    Abstract: The invention relates to a method for terminating optical fiber bundles, wherein the fiber bundle is inserted into a sleeve which is filled with adhesive.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: May 13, 2014
    Assignee: Schott AG
    Inventors: Hubertus Russert, Werner Sklarek
  • Patent number: 8721194
    Abstract: The present invention provides an optical transceiver module, comprising: a circuit substrate; a z-axis positioning base connected to the circuit substrate that, wherein the z-axis positioning base comprises two first sides respectively provided on two lateral sides of the optical transceiver sub-module, a second side provided between and connecting the two first sides, an opening corresponding in position to a side of the optical transceiver sub-module that faces away from the second side, and a step difference provided on each of the two first sides and the second side; a fiber-optic lens element provided on the z-axis positioning base and comprises a cover and a fiber-optic lens sub-module, wherein the cover comprises a recess and step differences surrounding the recess and respectively corresponding in position to the step differences provided on the z-axis positioning base, so as for the cover to be fitted on the z-axis positioning base.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: May 13, 2014
    Assignee: LuxNet Corporation
    Inventors: Yun-Cheng Huang, Chi-Min Ting, Tsing-Chow Wang, Chung Hsin Fu
  • Patent number: 8718423
    Abstract: An optical branching element includes: an input waveguide; a tapered waveguide connected to the input waveguide; two branched waveguides that are connected to the tapered waveguide and arranged so as to form a Y-shape with the input waveguide and the tapered waveguide; and a plurality of strip-like waveguides that are provided so as to connect between the two branched waveguides and not to protrude outside the two branched waveguides, and formed so as to decrease in width as becoming distant from the tapered waveguide.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: May 6, 2014
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Kazutaka Nara, Noritaka Matsubara
  • Patent number: 8718414
    Abstract: An acousto-optical filter element (114) is provided which has an acousto-optical crystal (118) having an acoustic signal transmitter (120) for generating acoustic signals in the acousto-optical crystal (118). The acousto-optical crystal (118) is designed to selectively spatially deflect light of a target wavelength from an input light beam (116) entering into the acousto-optical crystal (118), as a function of a high frequency applied to the acoustic signal transmitter (120), and to thereby produce a target light beam (126) having the target wavelength. In addition, the acousto-optical filter element (114) includes a spatial filter element (132) which is located in the target light beam (126) and is designed to selectively suppress the intensity of the target light beam (126) in a plane perpendicular to the propagation direction of the target light beam (126).
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: May 6, 2014
    Assignee: Leica Microsystems CMS GmbH
    Inventors: Hilmar Gugel, Volker Seyfried
  • Publication number: 20140119691
    Abstract: An optoelectronic device is disclosed. The optoelectronic device may be employed as a single or multi-channel opto-coupler that electrically isolates one circuit from another circuit. The opto-coupler may include one or more light guides that facilitate an efficient transfer of optical signals from a light source to a light detector.
    Type: Application
    Filed: October 29, 2012
    Publication date: May 1, 2014
    Applicant: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Gary Tay, Premkumar Jeromerajan, Gopinath Maasi
  • Publication number: 20140118737
    Abstract: A tunable multiport optical filter includes various types of arrays of optical ports. The tunable filter also includes a light dispersion element (e.g., a grating) and a reflective beam steering element (e.g., a tilting mirror). An optical signal exits an optical (input) port, is dispersed by the light dispersion element, reflects off the reflective beam steering element back to the light dispersion element, and on to another optical (output) port. The reflective beam steering element can be steered such that a wavelength portion of the dispersed optical signal can be coupled to the optical output port. For example, the input optical signal may be a wavelength division multiplexed signal carrying multiple channels on different wavelengths, and the tunable multiport optical filter directs one of the channels to the output optical port. Additionally, the tunable filter may be incorporated into a device act as a wavelength reference.
    Type: Application
    Filed: October 29, 2012
    Publication date: May 1, 2014
    Inventors: Massimo Martinelli, Mark H. Garrett, Ruipeng Sun, Mikhail I. Rudenko
  • Patent number: 8712466
    Abstract: A multichannel splitter formed from 1 to 2 splitters, wherein: an input terminal of a first 1 to 2 splitter defines an input of the multichannel splitter; the 1 to 2 splitters are electrically series-connected; and first respective outputs of the 1 to 2 splitters define output terminals of the multichannel splitter.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: April 29, 2014
    Assignee: STMicroelectronics SA
    Inventors: Baudouin Martineau, Olivier Richard, Frédéric Gianesello
  • Publication number: 20140112619
    Abstract: A method for transmitting a signal in an optical system includes generating an optical signal along an optical axis for transmission through an optical element, positioning the optical element so that a surface discontinuity is positioned along the optical axis such that the optical signal defines a substantially radially symmetric intensity profile, and launching the optical signal into an input face of an optical fiber such that the intensity profile is substantially null proximate an optical axis associated with the optical fiber.
    Type: Application
    Filed: September 5, 2013
    Publication date: April 24, 2014
    Applicant: FLIR SYSTEMS, INC.
    Inventors: Alan D. KATHMAN, Charles S. KOEHLER, William H. WELCH, Eric G. JOHNSON, Robert D. TeKOLSTE
  • Patent number: 8705914
    Abstract: An optical system having an optical waveguide for collecting light, a receiver for receiving the light, and redirecting optics for transferring the light from the optical waveguide to the receiver. The optical system can be used for concentrating light such as in solar applications. The optical system can also be used for diffusing light in illumination applications by replacing the receiver with a light source such that the light flows in the reverse of the concentration system.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: April 22, 2014
    Assignee: Banyan Energy, Inc.
    Inventors: Shondip Ghosh, David Sheldon Schultz
  • Patent number: 8705915
    Abstract: This disclosure provides systems, methods and apparatus for providing illumination by using a light guide to distribute light and for determining spacing between light turning features in the light guide. In one aspect, a light intensity profile along a first axis is determined and the pitch of light turning features along that first axis is varied based upon this profile, while the pitch along a second crossing axis (for example, an orthogonal axis) and the sizes of the light turning features remain unchanged. In some implementations, an apparatus includes a light guide having an array of light turning features configured to turn light from at least one light emitter. The light turning features can be non-uniformly spaced apart along a first axis such that pitches vary non-monotonically and, along a second axis that crosses the first axis, the light turning features are spaced apart with substantially the same progression.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: April 22, 2014
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Lai Wang, Marek Mienko, Ion Bita
  • Publication number: 20140104881
    Abstract: A light-emitting module includes a light-guiding plate, a plurality of light-guiding elements and a light-emitting unit. The light-guiding plate can guide the direction of light, and has at least a light input surface and two opposite flat surfaces. The light-guiding elements are disposed at one of the surfaces of the light-guiding plate. By viewing along a direction perpendicular to the surfaces, the shape of each of the light-guiding elements is curve shape with at least one inflection point. The light-emitting unit is disposed adjacent to the light input surface of the light-guiding plate. The light emitted by the light-emitting unit enters the light-guiding plate, is guided by the light-guiding plate and the light-guiding elements, and is outputted through one of the surfaces of the light-guiding plate in an alternating arrangement of bright and dark zones. The invention also discloses a display apparatus and the light-guiding plate.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 17, 2014
    Applicants: INNOLUX CORPORATION, INNOCOM TECHNOLOGY (SHENZHEN) CO., LTD
    Inventors: Jen-Chih YANG, Cheng-Cheng PAN, Ta-Chin HUANG, Chou-Yu KANG, Pu-Chun CHU
  • Publication number: 20140103218
    Abstract: An optical device (102) configured for concentrating light towards a target element (104) is provided. The optical device (102) comprises a waveguide element (106) configured for guiding light towards the target element (104), and a wavelength conversion element (108) configured for converting incoming light of a first wavelength into outgoing light of a second wavelength. The wavelength conversion element (108) extends adjacent to the waveguide element (106). An interface (114) between the waveguide element (106) and the wavelength conversion element (108) comprises a surface roughness. The latter may provide for an in creased efficiency and low manufacturing costs of the optical device (102).
    Type: Application
    Filed: June 18, 2012
    Publication date: April 17, 2014
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventor: Herfried Karl Wieczorek
  • Patent number: 8699842
    Abstract: Described are embodiments of a process including patterning one or more reflectors on a surface of a substrate of a material, the surface oriented at a selected angle relative to a (100) crystallographic plane of the material, and etching one or more reflectors in the surface, each reflector including one or more reflective surfaces formed by (111) crystallographic planes of the material. Also described are process embodiments for forming a molded waveguide including preparing a waveguide mold, the waveguide mold comprising a master mold including one or more reflectors on a surface of a substrate of a master mold material, the surface oriented at a selected angle relative to a (100) crystallographic plane of the material, each reflector including one or more reflective surfaces formed by (111) crystallographic planes of the material, injecting a waveguide material into the waveguide mold, and releasing the molded waveguide from the waveguide mold.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: April 15, 2014
    Assignee: Google Inc.
    Inventor: Mark B. Spitzer
  • Publication number: 20140098558
    Abstract: An illumination system employing an elongated waveguide having a non-round transversal cross-section and having at least a portion of its surface shaped in the form of a linear collimating element. The waveguide further employs at least one array of light extracting features distributed along a longitudinal axis of the waveguide and disposed in the focal area of the respective linear collimating element. Each light extracting feature has an active aperture which is substantially less than the light receiving aperture of the linear collimating element and is configured to redirect light propagating in the waveguide generally towards a normal direction with respect to the longitudinal axis of the waveguide. Light rays redirected by the light extracting features are further collimated by the linear collimating element and exit from the waveguide in the form of a directional beam.
    Type: Application
    Filed: October 8, 2012
    Publication date: April 10, 2014
    Inventor: SERGIY VICTOROVICH VASYLYEV
  • Patent number: 8693817
    Abstract: The present invention describes a microresonator that can be used as a 1:f variable coupler in a unit cell. It is described how a cascade of unit cells can be used to form a tunable, higher-order RF-filter with reconfigurable passbands. The disclosed filter structure can be utilized for the narrowband channelization of RF signals that have been modulated onto optical carriers. It is also disclosed how to utilize add/drop capabilities of the contemplated microdisks to confer connectivity and cascading in two dimensions. The present invention can conveniently provide a wavelength division multiplexing router, where an array of unit cells as provided herein can form a programmable optical switching matrix, through electronic programming of filter parameters.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: April 8, 2014
    Assignee: HRL Laboratories, LLC
    Inventors: Willie N. Ng, Brian N. Limketkai, Robert R. Hayes, Daniel Yap, Peter Petre
  • Patent number: 8693824
    Abstract: Apparatus and method for in-line cladding-light dissipation including forming a light-scattering surface on the optical fiber such that the light-scattering surface scatters cladding light away from the optical fiber. In some embodiments, the apparatus includes an optical fiber having a core and a first cladding layer that surrounds the core, wherein a first portion of the optical fiber has a light-scattering exterior surface. Some embodiments further include a transparent enclosure, wherein the transparent enclosure includes an opening that extends from a first end of the transparent enclosure to a second end of the transparent enclosure, and wherein at least the first portion of the optical fiber is located within the opening of the transparent enclosure. Some embodiments include a light-absorbing housing that surrounds the optical fiber and the transparent enclosure and is configured to absorb the light scattered away from the optical fiber by the light-scattering exterior surface.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: April 8, 2014
    Assignee: Lockheed Martin Corporation
    Inventor: Yongdan Hu
  • Patent number: 8687971
    Abstract: A system, a Laser-on-CMOS chip, and a method are described herein in accordance with the present invention. In one embodiment, the present invention enables a conventional WDM-capable system to dictate what wavelengths a Laser-on-CMOS chip's optical ports will use by seeding each of their LoC upstream reflective light generation devices (e.g., RSOAs) with a particular wavelength.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: April 1, 2014
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventor: Stefan Dahlfort
  • Patent number: 8682121
    Abstract: An optical wavelength filter has optical waveguides each of which includes a cladding layer and a core having a refractive index that is as high as that of the cladding layer by a factor of 1.4 or more. Each optical waveguide is partitioned into a reference section providing a reference and an adjustment section for adjusting phase differences. The reference section of each optical waveguide is so set that the optical waveguide in this section has a first equivalent refractive index and a first length. The adjustment section is so set that the waveguide in this adjustment section has a second equivalent refractive index and a second length. Two waves of light outputted from the output ends of adjacent two of the optical waveguides interfere with each other with a predetermined phase difference, thereby accomplishing independency of temperature and dimensional error.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: March 25, 2014
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Hideaki Okayama
  • Patent number: 8682119
    Abstract: An optical device includes an input/output optical coupler, a waveguide and a waveguide fragment. The optical coupler is configured to separate a received optical signal into first and second signal components. The waveguide is connected to the optical coupler and configured to propagate the first signal component via a first propagation mode. The waveguide fragment is located adjacent to the first waveguide and is configured to couple light from the first waveguide that propagates therein by a different second propagation mode.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: March 25, 2014
    Assignee: Alcatel Lucent
    Inventors: Christopher Doerr, Long Chen
  • Patent number: 8676023
    Abstract: The present invention discloses a method for fabricating polymeric wavelength filter based on an asymmetric Bragg coupler with single-grating waveguide. The asymmetric waveguide coupler is formed firstly on a negative photo-resist mold. PDMS film is injected into the narrow waveguide of the coupler to act as a protection layer. The gratings pattern is exposed on the alternative waveguide and subsequently transferred to PDMS stamp mold. The PDMS stamp mold is used as a stamp to transfer the gratings pattern of the ABC wavelength filter onto UV cured polymer to form the final ABC filter. Whereby, the fabrication process is reliable and accurate, and can offer great potential for mass production of the ABC filter with single-grating waveguide.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: March 18, 2014
    Assignee: National Formosa University
    Inventor: Wei-Ching Chuang
  • Patent number: 8676005
    Abstract: A light guide for a light source device includes a core layer which is formed from a transparent resin and has a refractive index n1 and cladding layers which are provided on both surfaces thereof and have a refractive index n2 which is lower than the refractive index n1 of the core layer. A light reflecting layer which scatters and reflects light is provided in the front surface of one cladding layer, the front surface of the other cladding layer is set as a light emitting face, and a recess is provided which reaches from at least one of either of the front surface of the one cladding layer or the front surface of the other cladding layer to the core layer passing through the cladding layer.
    Type: Grant
    Filed: December 25, 2009
    Date of Patent: March 18, 2014
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Kenji Yagi, Tadashi Suga, Masafumi Kitamura, Satoshi Miyadera, Takeo Ookura, Tetsuya Suda
  • Patent number: RE44829
    Abstract: Systems and methods for configuring an integrated transceiver are disclosed. In one embodiment, very small form factor transceivers can be configured to allow 10 G optical interconnects over distances up to 2 km. Transceiver circuitry can be integrated on a single die, and be electrically connected to a transmitter such as a laser-diode and a receiver such as a photo-diode. In one embodiment, the laser and photo diodes can be edge-operating, and be mounted on the die. In one embodiment, one or both of the diodes can be surface-operating so as to allow relaxation of alignment requirement. In one embodiment, one or both of the diodes can be mounted on a submount that is separate from the die so as to facilitate separate assembly and testing. In one embodiment, the diodes can be optically coupled to a ferrule via an optical coupling element so as to manage loss in certain situations.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: April 8, 2014
    Assignee: Luxtera, Inc.
    Inventors: Peter DeDobbelaere, Thierry Pinguet, Mark Peterson, Mark Harrison, Alexander G. Dickinson, Lawrence C. Gunn