Particular Coupling Structure Patents (Class 385/39)
  • Patent number: 8787708
    Abstract: Endless phase shifting apparatus, structures, and methods useful—for example—in MIMO optical demultiplexing.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: July 22, 2014
    Assignee: Alcatel Lucent
    Inventor: Christopher Doerr
  • Patent number: 8787710
    Abstract: A interferometer type polarization beam combiner and splitter, which can combine or split polarized light over a wide band, is provided. The interferometer type polarization beam combiner and splitter includes: an optical splitter; an optical coupler; an optical path length difference imparting unit, which includes a plurality of optical waveguides arranged between the optical splitting unit and the optical coupling unit; one or two input/output ports connected to the optical splitter; and two input/output ports connected to the optical coupler. A half-integer of a wavelength of ?c is set as a normalized phase difference, for the optical path length difference imparting unit, between two polarization states, and means for generating a difference in refractive index dispersion is provided between the optical waveguides of the optical path length difference imparting unit, so that the change rate of the transmittance with respect to wavelength is suppressed for the two polarization states.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: July 22, 2014
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takayuki Mizuno, Takashi Goh, Hiroshi Yamazaki, Shin Kamei, Tsutomu Kitoh
  • Patent number: 8781275
    Abstract: Embodiments of the invention include an apparatus including an optical fiber having a distal end configured to emit a beam of energy. The apparatus also includes a tube including a tube channel. The distal end of the optical fiber is disposed in the tube channel. The apparatus further includes a shock absorber disposed on the tube and a cap disposed on the shock absorber.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: July 15, 2014
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: William Asselin, Jessica Hixon, Michael O'Brien, Michael Melanson, Ty Fairneny
  • Patent number: 8774573
    Abstract: Described herein are optical devices including resonant cavity structures. In one embodiment, an optical fiber includes: (1) an elongated core including an outer surface; (2) an inner reflector disposed adjacent to the outer surface of the core and extending substantially along a length of the core; (3) an outer reflector spaced apart from the inner reflector and extending substantially along the length of the core; and (4) an emission layer disposed between the outer reflector and the inner reflector and extending substantially along the length of the core, the emission layer configured to emit radiation that is guided within the optical fiber.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: July 8, 2014
    Assignee: OMNIPV, Inc.
    Inventors: John Kenney, Jian Jim Wang, William M. Pfenninger, Nemanja Vockic, John Midgley, Kai Shum
  • Patent number: 8766221
    Abstract: A system and method are provided for bidirectional communications between a master device and one or more slave devices. Each slave device is coupled to first and second opto-isolators which are effective to provide galvanic isolation of the slave device from the master device. An encoder circuit is coupled between the master device and the first opto-isolators. A decoder circuit is coupled between the master device and the second opto-isolators. The master device generates transmissions to the slave devices along a first low logic path including the encoder and the first opto-isolators, wherein the decoder and the second opto-isolators are non-responsive to signals on the first path. The slave devices generate transmissions to the master device along a second low logic path including the second opto-isolators and the decoder, wherein the encoder and the first opto-isolators are non-responsive to signals on the second path.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: July 1, 2014
    Assignee: Power-One, Inc.
    Inventor: Alain Chapuis
  • 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: 8768121
    Abstract: A filter and a method of filtering a high frequency electrical signal using photonic components is disclosed. The filter has a serially fiber-coupled laser source, a modulator, a filter, and a photodetector. The electrical signal is applied to the modulator. The modulated light propagates through the filter which is constructed to pass not only a modulated sideband, but also at least a fraction of light at the carrier frequency of the laser. The photodetector detects a signal at the beat frequency between the carrier and sideband signals, after both signals have propagated through the filter. As a result, a separate optical branch for light at the carrier frequency is not required, which considerably simplifies the filter construction and makes it more stable and reliable.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: July 1, 2014
    Assignee: Her Majesty the Queen in Right of Canada, as Represented by the Minister of Industry, Through the Communications Research Centre Canada
    Inventors: Howard Rideout, Joe Seregelyi, Ping Lu, Stéphane Paquet, Jianping Yao, Stephen J. Mihailov, John Oldham, Mario Caron
  • Patent number: 8768124
    Abstract: Devices, systems and techniques for directly coupling an optical slot waveguide to another optical waveguide without a taper waveguide region between the two optical waveguides.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: July 1, 2014
    Assignee: Georgetown University
    Inventors: Edward R. Van Keuren, Changbao Ma
  • 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: 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: 8755653
    Abstract: Complex, coupled photonic microdevices are formed to include sub-wavelength-sized radial perturbations sufficient to create resonant cavities, where these devices may be formed along the length of a single optical fiber and coupled together to form relatively complex photonic devices. By carefully selecting the placement and separation of these local radius variations, and using microfibers (or other suitable arrangements) to couple optical signals into and out of the device fiber, resonances in the form of whispering gallery modes (WGMs) are created in the device fiber such that a number of coupled microstructures (such as ring resonators) may be formed.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: June 17, 2014
    Assignee: OFS Fitel, LLC
    Inventors: David J. DiGiovanni, Mikhail Sumetsky
  • 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: 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: 8737845
    Abstract: An optical engine for providing a point-to-point optical communications link between a first computing device and a second computing device. The optical engine includes a modulated hybrid micro-ring laser formed on a substrate and configured to generate an optical signal traveling parallel to the plane of the substrate. The optical engine further includes a waveguide, also formed in a plane parallel to the plane of the substrate, that is configured to guide the optical signal from the modulated ring laser to a defined region, a waveguide coupler at the defined region configured for coupling the optical signal into a multi-core optical fiber, and a multi-core optical fiber at the defined region that is configured to receive and transport the optical signal to the second computing device.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: May 27, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Marco Fiorentino, Qianfan Xu, Sagi Varghese Mathai, Raymond G. Beausoleil
  • Patent number: 8737843
    Abstract: An optical homodyne communication system and method in which a side carrier is transmitted along with data bands in an optical data signal, and upon reception, the side carrier is boosted, shifted to the center of the data bands, and its polarization state is matched to the polarization state of the respective data bands to compensate for polarization mode dispersion during transmission. By shifting a boosted side carrier to the center of the data bands, and by simultaneously compensating for the effects of polarization mode dispersion, the provided system and method simulate the advantages of homodyne reception using a local oscillator. The deleterious effects of chromatic dispersion on the data signals within the data bands are also compensated for by applying a corrective function to the data signals which precisely counteracts the effects of chromatic dispersion.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: May 27, 2014
    Assignee: Teradvance Communications, LLC
    Inventors: Marcel F.C. Schemmann, Zoran Maricevic, Antonije R. Djordjevic, Darby Racey
  • Patent number: 8737781
    Abstract: A method of manufacturing an optical waveguide, includes preparing a light path conversion component including a structure in which a protruding portion having a light path conversion inclined surface is covered with a metal layer and the metal layer serves as a light path conversion mirror, and a structural body in which a core layer is formed on a first cladding layer and an opening portion is provided in an end side of a light path of the core layer, arranging the light path conversion mirror of the light path conversion component in the opening portion of the core layer, and forming a second cladding layer covering the core layer, wherein a light path of a light that propagates through the core layer is converted toward a first cladding layer side by the light path conversion mirror.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: May 27, 2014
    Assignee: Shinko Electric Industries Co., Ltd.
    Inventors: Kazunao Yamamoto, Hideki Yonekura, Kenji Yanagisawa, Takanori Yamamoto
  • Publication number: 20140140651
    Abstract: On-chip non-reciprocity can be achieved by employing micron-sized optomechanical (OM) devices that are fabricated on-chip and which can be integrated with other optical elements. Non-linear coupling between light and a mechanical mode inside a resonator can provide a non-reciprocal response of the OM system, which can be induced and fully controlled by an external driving electromagnetic field. By choosing different resonator and/or waveguide configurations and by tuning different system parameters, the same OM coupling mechanism can be used to provide isolation (e.g., as an optical diode), non-reciprocal phase shifting, and/or routing applications. Even in the presence of a finite intrinsic mode coupling inside the resonator, non-reciprocal effects remain large for a sufficiently strong OM coupling. The disclosed systems, methods, and devices can be applied on a single photon level, which may find use for various non-reciprocal applications in the classical optical as well as the quantum regime.
    Type: Application
    Filed: October 17, 2012
    Publication date: May 22, 2014
    Inventors: Mohammad Hafezi, Peter Rabl
  • 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: 8718738
    Abstract: The invention comprises method and apparatus for fluid delivery between a sample probe and a sample. The fluid delivery system includes: a fluid reservoir, a delivery channel, a manifold or plenum, a channel or moat, a groove, and/or a dendritic pathway to deliver a thin and distributed layer of a fluid to a sample probe head and/or to a sample site. The fluid delivery system reduces sampling errors due to mechanical tissue distortion, specular reflectance, probe placement, and/or mechanically induced sample site stress/strain associated with optical sampling of the sample.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: May 6, 2014
    Assignee: GLT Acquisition Corp.
    Inventors: Thomas B. Blank, Roxanne E. Abul-Haj
  • 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
  • Patent number: 8705898
    Abstract: Some embodiments of the disclosed subject matter provide systems, devices, and methods for tuning resonant wavelengths of an optical resonator. Some embodiments of the disclosed subject matter provide systems, devices, and methods for tuning dispersion properties of photonic crystal waveguides. In some embodiments, methods for tuning a resonant wavelength of an optical resonator are provided, the methods including: providing an optical resonator having a surface; determining an initial resonant wavelength emitted by the optical resonator in response to an electromagnetic radiation input; determining a number of layers of dielectric material based on a difference between the initial resonant wavelength and a target resonant wavelength and a predetermined tuning characteristic; and applying the determined number of layers of dielectric material to the surface of the optical resonator to tune the initial resonant wavelength to a tuned resonant wavelength.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: April 22, 2014
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Chee Wei Wong, Xiaodong Yang, Charlton Chen, Chad Husko
  • Patent number: 8699841
    Abstract: A photosensitive resin composition which includes (A) a cyclic olefin; (B) at least either one of a monomer having a cyclic ether group and an oligomer having a cyclic ether group, having a refractive index different from that of the component (A); and (C) a photoacid generator, is provided.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: April 15, 2014
    Assignee: Sumitomo Bakelite Co., Ltd.
    Inventors: Tetsuya Mori, Keizo Takahama
  • 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: 8693827
    Abstract: Disclosed is a three-wavelength optical multiplexer which is compact, and which multiplexes light having different wavelength incident to three single-mode optical fibers, particularly light of red, green, and blue at transmittance above a certain reference.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: April 8, 2014
    Assignee: Tatsuta Electric Wire & Cable Co., Ltd.
    Inventors: Takatomo Katayama, Tomoyuki Kubota
  • 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
  • Publication number: 20140086532
    Abstract: An optical coupling device includes: a first face facing a support of the optical coupling device, this support having a reception face facing upwards and; a cavity mouthing to the first face, and receiving glue to fix the optical coupling device to the support. The cavity is surrounded by a wall including a second face facing at least partly upwards.
    Type: Application
    Filed: November 4, 2011
    Publication date: March 27, 2014
    Applicant: FCI
    Inventor: Gert Droesbeke
  • Patent number: 8674963
    Abstract: Waveguide structures and optical elements for use in an optical touch input device are disclosed. The disclosed waveguide structures and optical elements allow for reduced bezel width and simplified assembly of optical touch input devices, and relaxed component tolerances.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: March 18, 2014
    Assignee: Zetta Research and Development LLC—RPO Series
    Inventors: Benjamin Cornish, Robert Bruce Charters, Ian Andrew Maxwell, Graham Roy Atkins, Dax Kukulj, Graeme Gordon
  • Publication number: 20140072262
    Abstract: An optical device includes, for example, an optical fiber that guides light, a first holding member that holds the optical fiber, an optical element that functions by the light guided by the optical fiber being irradiated, and a second holding member that holds the optical element. The optical device further includes an optically coupled member elastically deformed by one end portion of the first holding member and one end portion of the second holding member being inserted to optically couple the optical fiber and the optical element by being elastically deformed.
    Type: Application
    Filed: November 15, 2013
    Publication date: March 13, 2014
    Applicant: OLYMPUS CORPORATION
    Inventor: Satoshi OHARA
  • Patent number: 8670124
    Abstract: An apparatus, method and computer program wherein the apparatus includes at least one interferometer where the at least one interferometer is configured to cause interference of an electromagnetic input signal; wherein the at least one interferometer is configured to receive at least one sensor input signal from at least one sensor such that the sensor input signal controls the interference of the electromagnetic input signal by the at least one interferometer; wherein the at least one interferometer is configured to provide a plurality of outputs where each of the plurality of outputs is provided by the at least one interferometer responding to the at least one sensor input signal with a different sensitivity; and at least one detector configured to detect the plurality of outputs of the at least one interferometer and provide a digital output signal indicative of the at least one sensor input signal.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: March 11, 2014
    Assignee: Nokia Corporation
    Inventors: Antti Niskanen, Hongwei Li
  • Patent number: 8666204
    Abstract: An optical transmission module includes a semiconductor substrate, a first film layer, an electronic component layer and a waveguide structure. The electronic component layer is used for converting a first electrical signal into an optical signal. The waveguide structure is formed on the first film layer, and includes a first reflective surface, a waveguide body and a second reflective surface. After the optical signal is transmitted through the semiconductor substrate and the first film layer and enters the waveguide structure, the optical signal is reflected by the first reflective surface, transmitted within the waveguide body and reflected by the second reflective surface. After the optical signal reflected by the second reflective surface is transmitted through the first film layer and the semiconductor substrate and received by the electronic component layer, the optical signal is converted into a second electrical signal by the electronic component layer.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: March 4, 2014
    Assignee: National Central University
    Inventors: Mao-Jen Wu, Hsiao-Chin Lan, Yun-Chih Lee, Chia-Chi Chang, Hsu-Liang Hsiao, Chin-Ta Chen, Bo-Kuan Shen, Guan-Fu Lu, Yan-Chong Chang, Jen-Yu Chang
  • Patent number: 8666202
    Abstract: A system for measuring properties of a thin film coated glass having a light source, a spectrometer, at least one pair of probes, a first optical fiber switch and a second optical fiber switch. The pair of probes includes a first probe located on one side of a glass sheet and a second probe located on the opposite side of the glass sheet, directly across from the first probe. The first and second optical fiber switches are adapted to couple either probe to the light source and/or the spectrometer. Because the design of the system is optically symmetrical, calibration may be performed without the use of a reference material such as a tile or mirror.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: March 4, 2014
    Assignee: Cardinal IG Company
    Inventors: Jordan B. Lagerman, Keith J. Burrows, Kyle R. Thering
  • Patent number: 8655117
    Abstract: Optical fiber sensors adapted to measure strain or pressure are disclosed. The optical fiber sensor has a lead-in optical fiber having an end surface at a forward end, and a first optical element having a body with an outer dimension, Do, a front end surface coupled to the lead-in optical fiber, a pedestal including a retracted surface that is spaced from the front end surface, the retracted surface at least partially defining an optical cavity, a gutter surrounding the pedestal, the gutter having a gutter depth defining an active region of length, L, the first optical element further exhibiting L/Do?0.5. Also provided are systems including the optical fiber sensor, and methods for manufacturing and using the optical fiber sensor. Numerous other aspects are provided.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: February 18, 2014
    Assignee: University of Maribor
    Inventors: Denis Donlagic, Simon Pevec, Edvard Cibula
  • Patent number: 8655125
    Abstract: A photo-conductive switch package module having a photo-conductive substrate or wafer with opposing electrode-interface surfaces, and at least one light-input surface. First metallic layers are formed on the electrode-interface surfaces, and one or more optical waveguides having input and output ends are bonded to the substrate so that the output end of each waveguide is bonded to a corresponding one of the light-input surfaces of the photo-conductive substrate. This forms a waveguide-substrate interface for coupling light into the photo-conductive wafer. A dielectric material such as epoxy is then used to encapsulate the photo-conductive substrate and optical waveguide so that only the metallic layers and the input end of the optical waveguide are exposed. Second metallic layers are then formed on the first metallic layers so that the waveguide-substrate interface is positioned under the second metallic layers.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: February 18, 2014
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: James S. Sullivan, David M. Sanders, Steven A. Hawkins, Stephen E. Sampayan
  • Patent number: 8655123
    Abstract: An in-line optical device adapted to be bonded in between ends of an optical fiber line is disclosed. The in-line optical device has an inner optical field interaction region, an outer support structure, and at least one radial opening. In some embodiments, a void region substantially surrounds the inner optical field interaction region. Systems including the in-line optical device and methods of making and using the in-line optical device are provided. Numerous other aspects are provided.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: February 18, 2014
    Assignee: University of Maribor
    Inventor: Denis Donlagic
  • Patent number: 8655122
    Abstract: Provided is a mode converter capable of efficiently coupling or emitting light having a single-peaked spot, and has high flexibility of the shape to be easily manufactured. The mode converter is formed of multiple single-mode waveguides optically coupling areas 1 and 2; when an axis parallel to a light propagation direction is z axis, an axis perpendicular to the z axis in a direction crossing the single-mode waveguides is x axis, an axis perpendicular to the x and z axes is y axis, and a plane passing through a center of the mode converter and includes the z axis is plane 1, the multiple single-mode waveguides are arranged reflection-symmetrically with respect to the plane 1; and the mode converter converts light entering from the area 1 into the even mode to cause the light of the even mode to propagate and couple optically with the area 2.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: February 18, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Taro Kato
  • Patent number: 8649643
    Abstract: An optical hybrid circuit includes: a first optical coupler including a first input channel, a second input channel, a first output channel, and a second output channel; a second optical coupler including a third input channel, a fourth input channel, a third output channel, and a fourth output channel; a third optical coupler including a fifth input channel, a sixth input channel, a fifth output channel, and a sixth output channel; a fourth optical coupler including a seventh input channel, an eighth input channel, a seventh output channel, and an eighth output channel; a fifth optical coupler including a ninth input channel, a tenth input channel, a ninth output channel, and a tenth output channel, the ninth input channel coupled to the first output channel; and a sixth optical coupler including an eleventh input channel, a twelfth input channel, an eleventh output channel, and a twelfth output channel.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: February 11, 2014
    Assignee: Fujitsu Limited
    Inventor: Seok-Hwan Jeong
  • Patent number: 8649640
    Abstract: The present invention provides an optical 90-degree hybrid circuit for reducing wavelength dependency of an IQ phase difference. An optical 90-degree hybrid circuit according to the present invention comprises a first demultiplexing optical coupler including a first and second input port, a second demultiplexing optical coupler including a third and fourth input port, first and second arm waveguides connected to the first and second input port, each having the same length, a third and fourth arm waveguides connected to the third and fourth input port, each having the same length, a 90-degree phase shift section installed in one of the first to fourth arm waveguides, a first optical coupler connected to the first and third arm waveguide, and a second optical coupler connected to the second and fourth arm waveguide, the light is inputted into the first and fourth input port or into the second and third input port.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: February 11, 2014
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yohei Sakamaki, Yusuke Nasu, Toshikazu Hashimoto, Kuninori Hattori, Hiroshi Takahashi
  • Patent number: 8644661
    Abstract: A photonic integrated circuit comprises a plurality of optical waveguides. Some waveguides cross some other waveguides at respective crossing locations. Some waveguides have varying widths wherein a width of a waveguide at a respective crossing location is smaller than the wavelength of the optical signal.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: February 4, 2014
    Assignee: Alcatel Lucent
    Inventor: Christopher R. Doerr
  • Patent number: 8644653
    Abstract: The present disclosure provides a system, apparatus and method to for providing highly manufacturable compact optical structures in optical circuits, increasing overall yield and lowering manufacturing costs. According to one aspect, an optical circuit is provided which includes an multimode interference element and first and second waveguides. The first waveguide may be provided adjacent a first side of the optical device and extending along at least the length of the multimode interference element, while the second waveguide may be provided adjacent a second side of the multimode interference element and extending along at least the length of the optical device. Each of the first and second waveguide have first and second ends which may be configured to dissipate propagating light in the first and second waveguides.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: February 4, 2014
    Assignee: Infinera Corporation
    Inventor: Peter W. Evans
  • Patent number: 8644650
    Abstract: Consistent with the present disclosure, MZ drive signal electrodes may be provided relatively close to and parallel to one another, such that the underlying waveguide arms may also be provided close to and parallel to one another. As a result, common mode performance of an MZ modulator may be obtained. In one example, an electrode wiring configuration consistent with the present disclosure may permit a waveguide arm separation of 40 microns or less.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: February 4, 2014
    Assignee: Infinera Corporation
    Inventors: Peter W. Evans, Scott Corzine, Mehrdad Ziari, Charles H. Joyner
  • Patent number: 8644660
    Abstract: Provided are an opto-electric hybrid board and a manufacturing method. The opto-electric hybrid board includes an optical waveguide unit and an electric circuit unit having an optical element mounted thereon. The optical waveguide unit includes socket portions for locating the electric circuit unit, which are formed on a surface of an undercladding layer and formed of the same material as a core. The socket portions are located at predetermined locations with respect to one end surface of a core. The electric circuit unit includes bent portions which are formed by bending a part of an electric circuit board so as to stand, for fitting into the socket portions. The bent portions are located at predetermined locations with respect to the optical element. The optical waveguide unit and the electric circuit unit are coupled in a state in which the bent portions fit into the socket portions.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: February 4, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Akiko Nagafuji, Yuichi Tsujita, Masayuki Hodono, Masami Inoue
  • Patent number: 8639066
    Abstract: A fiber gas sensor including a core fiber comprising at least one Bragg grating region, a fiber cladding in contact with the core fiber along an entire length of the core fiber, and a sensing matrix structure disposed upon the outer surface of the fiber cladding along a portion of the length of the fiber cladding and surrounding the fiber Bragg grating region. The sensing matrix structure comprising a bonding layer disposed on the outer surface of the fiber cladding layer, a nano-structured trampoline matrix layer disposed on the outer surface of the bonding layer and a capping layer disposed on the outer surface of the matrix layer. The thermally modulated response amplitude of the fiber gas sensor is found to linearly depend upon the gas molecular weight, and can be directly used to determine heat specific capacity ratio of Cp/Cv.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: January 28, 2014
    Assignee: General Electric Company
    Inventor: Hua Xia
  • Patent number: 8639071
    Abstract: An apparatus for forming laser radiation. The apparatus can form the laser radiation such that the laser radiation can enter an optical fiber. The apparatus contains a first lens device for deflection and/or imaging or collimation of the laser radiation with respect to a first direction, and a second lens device for deflection and/or imaging or collimation of the laser radiation with respect to a second direction. The first and the second lens devices are provided in or on a component.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: January 28, 2014
    Assignee: LIMO PatentverwaltungGmbH & Co. KG
    Inventors: Lutz Aschke, Andreas Bayer, Udo Fornahl, Jens Meinschien, Thomas Mitra
  • Patent number: 8639074
    Abstract: The present invention relates to devices which operate on gradient optical forces, in particular, nanoscale mechanical devices which are actuable by gradient optical forces. Such a device comprises a waveguide and a dielectric body, with at least a portion of the waveguide separated from the dielectric body at a distance which permits evanescent coupling of an optical mode within the waveguide to the dielectric body. This results in an optical force which acts on the waveguide and which can be exploited in a variety of devices on a nano scale, including all-optical switches, photonic transistors, tuneable couplers, optical attenuators and tuneable phase shifters. The waveguide can also comprise a gap such that two cantilever bridges are formed.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: January 28, 2014
    Assignee: Yale University
    Inventors: Hongxing Tang, Mo Li, Wolfram Pernice, Chi Xiong
  • Patent number: 8639067
    Abstract: The fabrication of an optical wiring board is performed in the following manner: A core member 13 for a mirror 22 is pattern-formed on a clad layer 11, and simultaneously, using the core member 13, each alignment mark pattern 14 is formed at any position on the clad layer 11. Further, with positioning in reference to each alignment mark 14, the core pattern 13 is subjected to physical cutting to form a bevel part and a concave part 23. Then, a metallic reflective film 18 is coated on the surface of the bevel part. Thereafter, with positioning in reference to each alignment mark 14, an optical wiring core pattern 20 is formed on the clad layer 11 adjacently to the mirror 22.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: January 28, 2014
    Assignee: Hitachi Chemical Company, Ltd.
    Inventor: Yasunobu Matsuoka
  • Publication number: 20140023320
    Abstract: Provided are a lightwave circuit and a method of manufacturing the same. The lightwave circuit includes a first substrate having an engraved core formation groove which is formed on an upper portion of the first substrate, a core layer which is formed inside the engraved core formation groove, a BPSG bonding layer which is formed on the first substrate including the core layer, and a second substrate which is formed on the BPSG bonding layer. Accordingly, light loss and branching uniformity of the lightwave circuit are effectively improved, and the lightwave circuit is manufactured simply and inexpensively while also further improving light loss and branching uniformity of the lightwave circuit.
    Type: Application
    Filed: November 21, 2011
    Publication date: January 23, 2014
    Inventors: Seo Young Lee, Hyung Jong Lee
  • Patent number: 8634686
    Abstract: An automatic optical coupling device that uses liquid to couple focused light into a light-guide is described. The liquid moves within a chamber or layer via the thermocapillary effect in order to automatically track and couple a moving spot of focused light. Also provided is the application of these coupling devices in an array feeding into a common light-guide, optical designs to improve the performance of these arrays, and the application of such arrays to light collection.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: January 21, 2014
    Assignee: Glint Photonics, Inc.
    Inventor: Peter Kozodoy
  • Patent number: 8630519
    Abstract: Photodetecting fiber. The fiber detects and localizes an incident optical beam. A semiconducting core is in intimate contact with a material forming a resistive channel that breaks axial symmetry. The resistive channel has a resistivity between that of metals and the semiconducting core, enabling the imposition of non-uniform, convex electric potential distributions along the fiber axis allowing photo-current measurements along the fiber.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: January 14, 2014
    Assignee: Massachusetts Institute of Technology
    Inventors: Fabien Sorin, Guillaume Lestoquoy, Sylvain Danto, Yoel Fink, John D. Joannopoulos