Input/output Coupler Patents (Class 385/31)
  • Patent number: 10372014
    Abstract: Techniques disclosed herein relate to photon sources with high spectral purity and high brightness. In one embodiment, a photon-pair source includes a pump waveguide, a first resonator coupled to the pump waveguide to couple pump photons from the pump waveguide into the first resonator, a second resonator coupled to the first resonator, and an output waveguide coupled to the second resonator. The second resonator is configured to convert the pump photons into photon pairs. The second resonator and the first resonator are configured to cause a coupling-induced resonance splitting in the second resonator or the first resonator. The second resonator and the output waveguide are configured to couple the photon pairs from the second resonator into the output waveguide. In some embodiments, the photo-pair source includes one or more tuners for tuning at least one of the first resonator or the second resonator.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: August 6, 2019
    Assignee: PSIQUANTUM, CORP.
    Inventors: Mihai Dorian Vidrighin, Damien Bonneau, Alessandro Farsi, Mark G. Thompson
  • Patent number: 10371905
    Abstract: An optical processing apparatus includes: a circuit hoard having first and second areas arranged in a direction of a first axis; a semiconductor device having an optical coupling element; an optical connector having an optical fiber and a holder with first and second holder parts, and the optical connector being supported by the second area and the semiconductor device disposed on the first area; and a supporting base having a thickness smaller than that of the semiconductor device. The supporting base is disposed between the second holder part and the second area. The optical fiber has a first optical fiber portion supported by the first holder part, and a second optical fiber portion held by the first and second holder parts. The first optical fiber portion has a tip end and a cladding face which is positioned with respect to the optical coupling element and is separated apart from the semiconductor device.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: August 6, 2019
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Mitsuharu Hirano, Akira Furuya
  • Patent number: 10310165
    Abstract: An image display apparatus includes an image display device configured to emit image light, a light guide member, a projection lens configured to project the image light toward the light guide member, and a light extracting unit provided on the light guide member, the light extracting unit being configured to extract the image light guided in the light guide member toward an exit pupil. The light extracting unit includes a first edge located at an end portion of the light extracting unit on the light incident section side and a second edge located at an end portion on the opposite side, and is capable of transmitting see-through light having been transmitted in the light guide member toward the exit pupil, and at least one of the first edge and the second edge is located outside a see-through visual field range in which the see-through light passes through.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: June 4, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Osamu Yokoyama
  • Patent number: 10222560
    Abstract: A cable tracing system includes a fiber optic connector with a connector fiber guide. The connector fiber guide includes a planar surface, a launch opening defined in the planar surface, and at least one alignment surface proximate the planar surface. The connector also includes a tracing optical fiber with a first launch end positioned within the launch opening of the fiber guide. The tracing optical fiber is accessible from an exterior of the housing for receiving an optical tracing signal from a launch optical fiber. The alignment surface is configured to axially align the launch optical fiber with the first tracing optical fiber.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: March 5, 2019
    Assignee: Corning Research & Development Corporation
    Inventors: Anthony Sebastian Bauco, Douglas Llewellyn Butler, Ashley Wesley Jones, Jason Clay Lail, Eric Stephan ten Have
  • Patent number: 10207124
    Abstract: A laser light irradiation device is disclosed, which can include an optical guide having a columnar portion and transmitting laser light through the columnar portion; a reflecting portion having a reflecting surface that reflects the laser light transmitted through the optical guide; and a transmitting portion having a window part and disposed between the columnar portion of the optical guide and the reflecting portion in such a manner that one end of the transmitting portion is in contact with the columnar portion, the transmitting portion transmitting the laser light emitted from the columnar portion to the reflecting portion and transmitting the laser light reflected by the reflecting surface to cause the laser light to be radiated to an external through the window part. A diameter of the reflecting surface gradually becomes smaller as distance from a boundary between the transmitting portion and the reflecting portion increases.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: February 19, 2019
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Katsuhiko Shimizu, Yuuichi Tada, Yuuki Itou, Kazuyuki Takahashi
  • Patent number: 10197765
    Abstract: According to various implementations of the invention, a system for controlling a controlled device includes a lidar configured to direct at least one beam toward a target; a first controlled device, wherein the at least one beam is directed toward the target via the first controlled device; and a control system configured to control a position of the first controlled device, where the control system includes an open loop controller and a closed loop controller. The open loop controller is configured to receive a desired trajectory command signal, and generate an open loop drive signal based on the desired trajectory command signal. The closed loop controller is configured to receive an actual position signal of the first controlled device, and generate a closed loop drive signal based on the actual position signal and a control signal derived from the command signal, where the control signal accounts for group delays associated with one or more control system components.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: February 5, 2019
    Assignee: StereoVision Imaging, Inc.
    Inventor: Stephan Schulz
  • Patent number: 10190872
    Abstract: A photodetection device including an image sensor that includes first pixels and second pixels; an interference element that includes incident regions; and illumination that emits light in a first wavelength band and a second wavelength band. The interference element causes first interference of light in the first wavelength band incident on two incident regions, and guides resultant light of the first interference to any of the first pixels and guides another part of the light in the first wavelength band to any of the second pixels, and causes second interference of part of the light in the second wavelength band incident on the two incident regions, and guides resultant light of the second interference to any of the first pixels and guides another part of the light in the second wavelength band incident on the two incident regions to any of the second pixels.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: January 29, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kenji Narumi, Teruhiro Shiono, Seiji Nishiwaki
  • Patent number: 10162180
    Abstract: An eyepiece for a head wearable display includes a curved lightguide component, an input coupler, and an output coupler. The curved lightguide component guides display light received at an input region peripherally located from a viewing region and emits the display light along an eye-ward direction in the viewing region. The curved lightguide component includes an eye-ward facing surface that is concave and a world facing surface that is convex. The input coupler is disposed at the input region to couple the display light into the curved lightguide component. The output coupler is disposed at the viewing region to redirect the display light towards the eye-ward direction for output from the curved lightguide component. The output coupler is partially transmissive to ambient light incident through the world facing surface. The display light is guided between the input coupler and the output coupler entirely by total internal reflection.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: December 25, 2018
    Assignee: GOOGLE LLC
    Inventors: Ozan Cakmakci, Oscar A. Martinez, James Dunphy
  • Patent number: 10156687
    Abstract: This optical receptacle has a first optical surface, a reflection surface, a second optical surface, a light separation part, and a third optical surface. On the first optical surface, light from a photoelectric conversion element is incident. The reflection surface reflects the light incident on the first optical surface. The second optical surface allows the light reflected by the reflection surface to be emitted toward an end surface of an optical transmission body. The light separation part separates the light reflected by the reflection surface, into monitor light and signal light. The third optical surface allows the monitor light to be emitted toward a detection element. The light separation part includes divided reflection surfaces and divided transmission surfaces. At least one of the divided transmission surfaces includes one or more widened portions each having a width larger than those of the other divided transmission surfaces.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: December 18, 2018
    Assignee: ENPLAS CORPORATION
    Inventors: Shimpei Morioka, Ayano Kon
  • Patent number: 10078189
    Abstract: An optical module includes a lens sheet having one or more lenses, a substrate having a photoelectric conversion device mounted on a first face thereof and having a first penetrating hole formed therethrough between the photoelectric conversion device and the one or more lenses, and an adhesive layer configured to bond a face of the lens sheet to a second face of the substrate, wherein the adhesive layer has a second penetrating hole formed therethrough between the one or more lenses and the photoelectric conversion device, and a pathway is provided to connect a space constituted by the first penetrating hole and the second penetrating hole to an outside of the space.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: September 18, 2018
    Assignees: FUJITSU COMPONENT LIMITED, FUJITSU LIMITED
    Inventors: Takuya Uchiyama, Shinichiro Akieda, Mariko Kase
  • Patent number: 10054744
    Abstract: An optical module includes a substrate on which an optical waveguide is formed, and an optical fiber assembly. The optical fiber assembly includes an optical fiber, a translucent member, and a mirror portion. The translucent member includes a joint surface joined to an end surface of the substrate at an end of the optical waveguide, and is attached to a distal end of the optical fiber. The mirror portion is formed on the translucent member, reflects light emitted from the distal end of the optical fiber in a direction different from a traveling direction of the light, and collects the reflected light into the end of the optical waveguide through the joint surface.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: August 21, 2018
    Assignee: FUJITSU OPTICAL COMPONENTS LIMITED
    Inventors: Masaharu Doi, Akira Ishii, Teruhiro Kubo, Yoshinobu Kubota
  • Patent number: 10025050
    Abstract: Receptacle ferrules with at least one monolithic lens system and fiber optic connectors using same are disclosed. Ferrule assemblies formed by mating plug and receptacle ferrules are also disclosed, as are connector assemblies formed by mating plug and receptacle connectors. The fiber optic connectors and connector assemblies are suitable for use with commercial electronic devices and provide either an optical connection, or both electrical and optical connections. The monolithic optical system defines a receptacle optical pathway having a focus at the receptacle ferrule front end. When a plug ferrule having a plug optical pathway is mated with the receptacle ferrule, the plug and receptacle optical pathways are optically coupled at a solid-solid optical pathway interface where light passing therethrough is either divergent or convergent, and where unwanted liquid is substantially expelled.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: July 17, 2018
    Assignee: Corning Incorporated
    Inventors: Jeffery Alan DeMeritt, Davide Domenico Fortusini, Micah Colen Isenhour, Dennis Michael Knecht, James Phillip Luther
  • Patent number: 10001601
    Abstract: An integrated optical coupler device comprising, on a substrate surface: an integrated optical coupling grating extending in lateral directions parallel to the substrate surface and which, by diffraction at its grating structures, either converts electromagnetic waves, guided parallel to the substrate surface, of at least two waveguide modes of integrated optical waveguides into fiber modes propagating perpendicularly to the substrate surface, or converts electromagnetic waves, propagating perpendicularly to the substrate surface, of a fiber mode into electromagnetic waves, propagating parallel to the substrate surface, of at least two waveguide modes, and a first conductor pair, connected to the coupling grating and formed by a first and a second integrated optical waveguide, through which, in mutually opposite first and second directions parallel to the substrate surface, electromagnetic waves of at least two waveguide modes can be conducted to the coupling grating or can be conducted away from the coupling
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: June 19, 2018
    Assignee: IHP GMBH—INNOVATIONS FOR HIGH PERFORMANCE MICROELECTRONICS/LEIBNIZ-INSTITUT FÜR INNOVATIVE MIKROELEKTRONIK
    Inventors: Benjamin Wohlfeil, Lars Zimmermann
  • Patent number: 9983362
    Abstract: The inventive high density optical packaging header apparatus, in various embodiments thereof, provides configurable, modular, and highly versatile solutions for simultaneously connecting multiple optical fibers/waveguides to optical-fiber-based electronic systems, components, and devices, and is readily usable in a variety of applications involving highly flexible and modular connection of multiple optical fibers/waveguides assembled in a header block configuration to optical-fiber-based system/component backplanes, while providing advantageous active and passive alignment features.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: May 29, 2018
    Assignee: Chiral Photonics, Inc.
    Inventors: Victor Il'ich Kopp, Jonathan Singer, Daniel Neugroschl
  • Patent number: 9983367
    Abstract: An optical module for connecting between an optical fiber and a photoelectric conversion device mounted on a printed circuit board includes a main body made of transmissive material and having a slanted face and a bottom face, the slanted face being at an angle to the bottom face, a reception-purpose lens, and a transmission-purpose lens, wherein the slanted face serves as a mirror on an optical path extending in the main body between the reception-purpose lens and the transmission-purpose lens.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: May 29, 2018
    Assignees: FUJITSU COMPONENT LIMITED, FUJITSU LIMITED
    Inventors: Hongfei Zhang, Osamu Daikuhara, Hidenobu Muranaka
  • Patent number: 9958616
    Abstract: An embedded optical fiber module is disclosed. The embedded optical fiber module is adapted to fit in a recess of a package substrate. The embedded optical fiber module is configured for optical signal transmission between different chips or electronic devices mounted on the package substrate.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: May 1, 2018
    Inventor: Dyi-Chung Hu
  • Patent number: 9958603
    Abstract: An optical fiber for an optical fiber sensor and a chemical sensor using the same are disclosed. The optical fiber includes a core area, and a suspended cladding area formed around the core area and having at least one cladding hole. The core area has at least one core hole for reducing an effective refractive index of the core area. The optical fiber and the chemical sensor using the same may have improved measurement sensitivity by increasing an evanescent field fraction of existing suspended core fibers.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: May 1, 2018
    Assignee: Gwangju Institute of Science and Technology
    Inventors: Bok Hyeon Kim, Youngjoo Chung, So Eun Kim, Bongkyun Kim, Tae Joong Eom, Myoung Kyu Oh
  • Patent number: 9946071
    Abstract: Configurations are disclosed for presenting virtual reality and augmented reality experiences to users. The system may comprise an image-generating source to provide one or more frames of image data in a time-sequential manner, a light modulator configured to transmit light associated with the one or more frames of image data, a substrate to direct image information to a user's eye, wherein the substrate houses a plurality of reflectors, a first reflector of the plurality of reflectors to reflect transmitted light associated with a first frame of image data at a first angle to the user's eye, and a second reflector to reflect transmitted light associated with a second frame of the image data at a second angle to the user's eye.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: April 17, 2018
    Assignee: Magic Leap, Inc.
    Inventor: Brian T. Schowengerdt
  • Patent number: 9939578
    Abstract: Planar lightwave circuits with a polymer coupling waveguide optically coupling a planar waveguide over a first region of a substrate to an optical component, such as a laser, affixed to a second region of the substrate. The coupling waveguide may be formed from a polymer layer applied over the planar waveguide and optical component such that any misalignment between the two may be accommodated by patterning the polymer into a waveguide having a first end aligned to an end of the planar waveguide and a second end aligned to an edge of the optical component. In embodiments, the polymer is photo-definable, such as a negative resist, and may be patterned through direct laser writing. In embodiments, the optical component is a thin film affixed to the substrate through micro-transfer printing. In other embodiments, the optical component is a semiconductor chip affixed to the substrate by flip-chip bonding.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: April 10, 2018
    Assignee: Intel Corporation
    Inventors: Peter L. D. Chang, Jai-Hung Tseng
  • Patent number: 9880337
    Abstract: Disclosed herein is an optical fiber assembly comprising a launching fiber having a receiving end and a transmitting end; an illuminating fiber having a receiving end and a transmitting end; where the receiving end of the launching fiber is operative to receive light from a light source and the transmitting end of the launching fiber is operative to transmit light to the receiving end of the illuminating fiber; where the launching fiber contacts the illuminating fiber in a manner so as to be offset from a center of a cross-sectional area of the illuminating fiber; and where the launching fiber has a diameter that is ? to ½ of a diameter of the illuminating fiber; and a lens that is operative to contact the transmitting end of the illuminating fiber.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: January 30, 2018
    Assignee: OFS FITEL, LLC
    Inventor: Xiaoguang Sun
  • Patent number: 9864132
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to silicon waveguide devices in integrated photonics and methods of manufacture. The integrated photonics structure includes: a localized region of negative thermal expansion (NTE) coefficient material formed within a trench; at least one photonics or CMOS component contacting with the negative thermal expansion (NTE) coefficient material; and cladding material formed above the at least one photonics or CMOS component.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: January 9, 2018
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Roderick A. Augur, Ajey Poovannummoottil Jacob, Steven M. Shank
  • Patent number: 9857542
    Abstract: A compact bidirectional optical transceiver module is provided that has a bidirectional optical subassembly (BOSA) that includes a stamped metal optic that folds the optical pathway, alignment features that enable the optoelectronic components of the electrical subassembly (ESA) to be precisely aligned with the BOSA in all dimensions, and features that reduce the capacitance of the driver circuitry to improve signal integrity and widen the eye opening.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: January 2, 2018
    Assignee: NanoPrecision Products, Inc.
    Inventors: Laurence R. McColloch, Michael K. Barnoski, Robert R. Vallance, Shuhe Li
  • Patent number: 9791641
    Abstract: Inverted 45° semiconductor mirrors as vertical optical couplers for PIC chips, particularly optical receivers and transmitters. An inverted 45° semiconductor mirror functions to couple light between a plane in the PIC chip defined by thin film layers and a direction normal to a top surface of the PIC chip where it may be generated or collected by an off-chip component, such as a wire terminal. In an exemplary embodiment, a (110) plane of a cubic crystalline semiconductor may provide a 45° facet inverted relative to a (100) surface of the semiconductor from which light is to be emitted. In further embodiments, a (110) plane may be exposed by undercutting a device layer of a semiconductor on insulator (SOI) substrate. Alternatively, a pre-etched substrate surface may be bonded to a handling wafer, thinned, and then utilized for PIC waveguide formation.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: October 17, 2017
    Assignee: Intel Corporation
    Inventors: John Heck, Haisheng Rong
  • Patent number: 9753284
    Abstract: There is provided a display device including (I) an eyeglass-shaped frame configured to be mounted on a head of an observer, and (II) an image display device attached to the frame. The image display device includes (A) an image forming device, and (B) an optical device on which light output from the image forming device is incident, in which the light is guided, and from which the light is output. A dimmer configured to adjust an amount of external light incident from outside is installed on a side opposite to a side on which the image forming device of the optical device is disposed. A light shielding member configured to shield incidence of external light on the optical device is disposed in a region of the optical device on which light output from the image forming device is incident.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: September 5, 2017
    Assignee: Sony Corporation
    Inventors: Akio Machida, Yukinari Sakamoto
  • Patent number: 9754985
    Abstract: An imaging system can include of a plurality of pairs of lenslets and a respective plurality of two-dimensional arrays of photonic waveguides arranged in a respective plurality of photonic integrated circuits. Each waveguide can collect light in an airy-disk-size bin to cover a full field of view of the lenslet. Light from each pair of respective waveguides from each pair of lenslets can be demultiplexed into wavelength bins and combined with appropriate phase shifts to enable a measurement of the complex visibility. The complex visibilities from all of the measurements then can be processed to form an image.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: September 5, 2017
    Assignee: LOCKHEED MARTIN CORPORATION
    Inventors: Alan L. Duncan, Richard L. Kendrick, David M. Stubbs
  • Patent number: 9735883
    Abstract: An optical transceiver using a modulator biased to a non-linear region of the modulator's power transfer function can extend the possible transmission distance of intensity modulated direct detection (IMDD) n-level pulse amplitude modulated (PAM-n) signals. A non-linear look-up-table may compensate for non-linear characteristics of the modulator. An adaptive decision threshold look-up-table may be used to provide adaptive decision levels at the receiver.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: August 15, 2017
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Sung Chung, Xuefeng Tang, Chuandong Li, Zhuhong Zhang
  • Patent number: 9712239
    Abstract: A multiplexed optical communication system comprising a carrier optical fiber, a plurality of launching light sources, and a matching plurality of multiplexer/demultiplexers and photodetectors is described and claimed. Optical communication channel separation by Spatial Domain Multiplexing (SDM), Optical Angular Momentum (OAM) multiplexing, and Wavelength Division Multiplexing (WDM) is used in combination to achieve significant increase in optical communication channel bandwidth over the prior art. The launching light sources may be positioned such that the light beams are incident on the receiving end of the carrier optical fiber at desired angles including complementary angles. Crosstalk between optical communication channels is minimal. The communication bandwidth of a TDM system may be increased by an order of magnitude due the layered WDM/SDM/OAM data multiplexing of the invention.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: July 18, 2017
    Assignee: Florida Institute of Technology, Inc.
    Inventors: Syed H. Murshid, Saud Alanzi, Bilas Chowdhury
  • Patent number: 9690050
    Abstract: A laser unit includes: multi-mode semiconductor lasers configured to output laser lights in multi-mode; an optical multiplexer configured to multiplex and output the laser lights; a multi-mode optical fiber configured to connect the multi-mode semiconductor lasers to the optical multiplexer, and including a core portion, a cladding portion, and a coated portion; a first bending portion formed to the multi-mode optical fiber and bent with a predetermined bending length and at a predetermined first bending radius; a radiation portion formed outside the coated portion at the first bending portion, and configured to radiate heat of the multi-mode optical fiber; and a second bending portion formed to the multi-mode optical fiber between the first bending portion and the optical multiplexer and bent at a predetermined second bending radius, wherein increase in a temperature at the second bending portion is restrained by radiation from the radiation portion.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: June 27, 2017
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Kousuke Kashiwagi, Yoshihiro Emori, Kanji Tanaka
  • Patent number: 9671580
    Abstract: An apparatus for packaging a photonic transceiver. The apparatus includes a case having a base member, two partial side members, and a lid member to provide a spatial volume with an opening at a back end of the base member. Additionally, the apparatus includes a PCB installed inside the spatial volume over the base member with a pluggable connector at the back end. The apparatus includes one or more optical transmitting devices being mounted upside-down via a flex circuit board bended 180 degrees inward to a backside of the PCB and including a built-in TEC module in contact with the lid member. Furthermore, the apparatus includes a silicon photonics chip including a fiber-to-silicon attachment module, mounted on the PCB and coupled to a modulation driver module and a trans-impedance-amplifier module. Moreover, the apparatus includes an optical input port and output port being back connected to the fiber-to-silicon attachment module.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: June 6, 2017
    Assignee: INPHI CORPORATION
    Inventors: Radhakrishnan L. Nagarajan, Peng-Chih Li, Masaki Kato, Chris Togami
  • Patent number: 9671581
    Abstract: The apparatus includes a case having a base member, two partial side members, and a lid member to provide a spatial volume with an opening at a back end of the base member. Additionally, the apparatus includes a PCB installed inside the spatial volume over the base member with a pluggable connector at the back end. The apparatus includes one or more optical transmitting devices in transmit-optical-sub-assembly package, each being mounted upside-down on the PCB and including a built-in TEC module in contact with the lid member and a laser output port aiming toward the back end. Furthermore, the apparatus includes a silicon photonics chip including a fiber-to-silicon attachment module, mounted on the PCB and coupled to a modulation driver module and a trans-impedance-amplifier module. Moreover, the apparatus includes an optical input port and output port being back connected to the fiber-to-silicon attachment module.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: June 6, 2017
    Assignee: INPHI CORPORATION
    Inventors: Radhakrishnan L. Nagarajan, Peng-Chih Li, Masaki Kato
  • Patent number: 9671573
    Abstract: This light receptacle comprises: first optical surfaces on which light beams emitted from light emitting elements are respectively caused to be incident; second optical surfaces which emit the light beams incident on first optical surfaces respectively toward the end faces of light transmission bodies; a third optical surface which reflects the light beams incident on the first optical surfaces toward the second optical surfaces; and recesses which are formed in the surface on which second optical surfaces are arranged. The distance between the centers of two adjacent first optical surfaces before mold release and the distance between the centers of two adjacent second optical surfaces before mold release during injection molding are shorter than the distance between the optical axes of light beams emitted from two adjacent light emitting elements that are arranged so as to face each other.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: June 6, 2017
    Assignee: Enplas Corporation
    Inventors: Shimpei Morioka, Kazutaka Shibuya
  • Patent number: 9664859
    Abstract: Provided is a downsized connector for a multicore fiber and a plurality of single-mode fibers which can simplify the core alignment process between the fibers. The optical fiber connector includes a mount substrate, a multicore fiber including a plurality of cores arrayed in the same plane, a first sub-substrate configured to fix an end part of the multicore fiber, and to be bonded on the mount substrate, a plurality of single-mode fibers including at least the same number of fibers as the plurality of cores of the multicore fiber, and a second sub-substrate configured to fix end parts of the plurality of single-mode fibers, and to be bonded on the mount substrate. A relative position between the first sub-substrate and the second sub-substrate is determined, so that the plurality of cores of the multicore fiber and the plurality of single-mode fibers of the same number as the plurality of cores are optically coupled, respectively.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: May 30, 2017
    Assignee: CITIZEN WATCH CO., LTD.
    Inventors: Masafumi Ide, Kaoru Yoda
  • Patent number: 9660723
    Abstract: The present invention discloses a wavelength selective switch and a method for controlling a spatial phase modulator in a wavelength selective switch.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: May 23, 2017
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Ning Liu, Han Zhao
  • Patent number: 9645321
    Abstract: A wavelength selection switch can decrease the amount of increase in size and cost of a node device by integrating and sharing the constituent components of a plurality of wavelength selection switches or optical components mounted in a node. The wavelength selection switch has: at least one input port that inputs light; at least one output port that receives light from the input port; at least one light-collecting element that alters the beam shape of the light entering from the input port; at least one scattering element that scatters the light entering from the input port into each wavelength; at least one wavefront control element that causes light of each wavelength scattered by the scattering element to be reflected to the output port for each wavelength.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: May 9, 2017
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yuichi Higuchi, Jo ji Yamaguchi, Koichi Hadama, Yuzo Ishii, Kenya Suzuki, Kazunori Seno, Takeshi Kawai
  • Patent number: 9620925
    Abstract: An optical combiner (25), comprising a bundle of input fibers (24) spliced to an output fiber (26), the output fiber having a cladding and at least one high-index portion within the cladding, such that the high index portion has a diameter substantially equal to or less than the outer diameter of the input fiber bundle at the splice point.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: April 11, 2017
    Assignee: SPI Lasers UK Limited
    Inventors: Stephen Keen, Stephen Moore, Iain Botheroyd
  • Patent number: 9606292
    Abstract: Example devices are optical dividers including: a first optical coupler; a second optical coupler; and a third optical coupler. The devices also comprise a first optical fiber integrated in the first optical coupler, the first optical fiber coupled to an optical combiner, and a second optical fiber integrated in the first optical coupler and in the second optical coupler, the second optical fiber coupled to the optical combiner. The devices further comprise a third optical fiber integrated in the second optical coupler and in the third optical coupler, the third optical fiber coupled to the optical combiner. The optical combiner includes: a first output coupler; a second output coupler; and the optical combiner couples a subset of the first through third optical fibers to the first output coupler; and the optical combiner couples a subset of the first through third optical fibers to the second output coupler.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: March 28, 2017
    Assignee: PGS Geophysical AS
    Inventor: Willard Womack
  • Patent number: 9599821
    Abstract: A virtual reality system includes a playground defined within a real world space to have a predetermined area in which a user is movable, a head mounted device surrounds both eyes displaying an image of a virtual space formed corresponding to real objects in the playground, a sensor attached to a predetermined location in the playground, the head mounted device or body of the user sensing an actual location or motion of the user in the playground. A control unit calculates a location and direction of the user in the playground according to a signal from the sensor, and displays an image on the head mounted device of the virtual space, observed at the location and in the facing direction of the user. When the user wearing the head mounted device actually moves in the playground, a feeling of moving in the virtual space is given to the user.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: March 21, 2017
    Inventors: Greg Van Curen, Minchul So, Samuel Farina, III
  • Patent number: 9595803
    Abstract: As kilowatt class fiber laser and amplifier systems become more in demand, there are ongoing efforts to improve optical fiber laser and amplifier designs to maximize efficiency and further increase the capacity of these high-energy optical fiber lasers and amplifiers. The present disclosure provides a fiber laser or amplifier system configured to efficiently and conveniently generate and couple high numerical aperture and high-energy pump light into a fiber laser or amplifier system.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: March 14, 2017
    Assignee: OFS FITEL, LLC
    Inventor: William R Holland
  • Patent number: 9588308
    Abstract: An optical element includes a lens component and a reflecting mirror. The lens component includes first, second and third planes disposed to surround and parallel to a reference axis. The first plane is formed with first, second, third, and fourth collimating units. The second plane is formed with fifth and sixth collimating units. The lens component further includes fourth, fifth, sixth and seventh planes cooperatively defining a groove unit extending along and indented toward the reference axis from the third plane. The fourth and sixth planes extend obliquely relative to said first plane. The reflecting mirror is disposed on the third plane to cover the groove unit and has at least one reflecting plane facing the fourth, fifth, sixth and seventh planes.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: March 7, 2017
    Assignee: FORWARD OPTICS CO., LTD.
    Inventors: Huai-An Wu, Wei Shen, Yuan-Lin Lee
  • Patent number: 9585548
    Abstract: The invention relates to an optical scattering element suitable for dispersing or scattering light transmitted by optical device by Mie scattering. The optical scattering element comprises a phase-separated or porous borosilicate glass having dispersed phase particles with a particle size of 200 to 500 nanometers or pores with a size of 200 to 500 nanometers, at a number density of 108 to 1012 mm?3. The optical scattering element can be prepared by subjecting a borosilicate glass to a controlled heat treatment to induce phase separation, and then optionally leaching out one of the phases with an acid leach. The optical scattering element can be, for example, attached to an end of an optical fiber or bundle of optical fibers. The invention also relates to a method of dispersing or scattering light by transmitting the light through the optical scattering element.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: March 7, 2017
    Assignee: SCHOTT CORPORATION
    Inventors: William H. James, III, Elizabeth Chase, Mark J. Davis, Paula Vullo, Sally Pucilowski, Eric Hector Urruti
  • Patent number: 9513448
    Abstract: This disclosure provides an optical assembly, comprising a base body and a wave filtering apparatus. A first slot is disposed on an upper surface of the base body. A total internal reflection surface and a connecting part are formed in the first slot. The total internal reflection surface reflects collimated light formed by a first lens from a light emitting apparatus. The wave filtering apparatus comprises a first part removably connected to the connecting portion, and a second portion forming a beam splitting surface. The wave filtering apparatus has a light-pervious optical coating at least on the beam splitting surface of the apparatus, and is configured to split the collimated light reflected from the total internal reflection surface into a first beam and a second beam. The first beam travels towards the side where the third lens is located, and the second beam travels towards a photoelectric detection apparatus.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: December 6, 2016
    Assignee: InnoLight Technology (Suzhou) LTD.
    Inventors: Yuzhou Sun, Long Chen, Kewu Wang, Weilong Li, Xiangzhong Wang
  • Patent number: 9496959
    Abstract: The apparatus includes a case having a base member, two partial side members, and a lid member to provide a spatial volume with an opening at a back end of the base member. Additionally, the apparatus includes a PCB installed inside the spatial volume over the base member with a pluggable connector at the back end. The apparatus includes one or more optical transmitting devices in transmit-optical-sub-assembly package, each being mounted upside-down on the PCB and including a built-in TEC module in contact with the lid member and a laser output port aiming toward the back end. Furthermore, the apparatus includes a silicon photonics chip including a fiber-to-silicon attachment module, mounted on the PCB and coupled to a modulation driver module and a trans-impedance-amplifier module. Moreover, the apparatus includes an optical input port and output port being back connected to the fiber-to-silicon attachment module.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: November 15, 2016
    Assignee: INPHI CORPORATION
    Inventors: Radhakrishnan L. Nagarajan, Peng-Chih Li, Masaki Kato
  • Patent number: 9468368
    Abstract: An ophthalmic endo-illumination system includes a light source that produces a light beam, a fiber port that receives an optical fiber, a condenser that couples at least a portion of the light beam into the optical fiber received at the fiber port, and a beam splitter disposed between the fiber port and the condenser. The beam splitter is configured to receive the light beam from the condenser and split the light beam into a first beam which is coupled to the optical fiber and a second beam which is coupled to a monitoring fiber. An optical sensor is provided to detect an amount of the second beam output from the monitoring fiber. The coupling efficiency of the first beam coupled into the optical fiber may be determined based on the amount of the second beam output from the monitoring fiber.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: October 18, 2016
    Assignee: Novartis AG
    Inventors: Ronald T. Smith, Ben Tse, Vit Ulinskas
  • Patent number: 9459427
    Abstract: A fiber optic fan-out/break-out kit Closure/Housing for protecting fiber optic strands associated with the fiber optic cable. The fiber optic fan-out/break-out Closure/Housing comprises of a female shell, a male shell, an insert piece and an insert tool. The insert tool is temporarily attached to the insert piece thereby screwing the insert piece into the male shell.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: October 4, 2016
    Inventor: Nathan J. Bustamante
  • Patent number: 9435959
    Abstract: Techniques, methods, structures and apparatus that provide the efficient coupling of light to/from one or more optical fibers to/from planar grating waveguide couplers positioned on photonic integrated circuits.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: September 6, 2016
    Assignee: Acacia Communications, Inc.
    Inventors: Christopher Doerr, Eric Swanson
  • Patent number: 9416042
    Abstract: The present invention is generally directed to a method of making a hollow-core photonic band gap preform from a specialty glass by pressing a specialty glass through a die to form a tube wherein the outer transverse shape of the tube is a hexagon, triangle, quadrilateral, or other polygon; stretching the tube to form a micro-tube with approximately the same outer transverse shape as the tube; stacking a plurality of micro-tubes into a bundle minimizing voids between adjacent micro-tubes and forming a central longitudinal void wherein the plurality of micro-tubes within the bundle comprise an inner structured region of the preform and the central void of the bundle comprises a hollow core in the preform; and inserting the bundle into a jacket tube. Also disclosed are the hollow-core photonic band gap preform and fiber formed by this method.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: August 16, 2016
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Daniel J. Gibson, Jasbinder S. Sanghera, Frederic H. Kung, Ishwar D. Aggarwal
  • Patent number: 9383515
    Abstract: According to the present invention, as a result of using a depressed or trench-assisted light-receiving waveguide in which the core is surrounded by a layer having a refractive index lower than that of a cladding as light-receiving means for receiving light outputted from a multi-core optical fiber, the layer of a low refractive index can inhibit the propagation of noise, etc. from the cladding to the core. Consequently, even in cases where the inter-core crosstalk is small, it is possible to accurately measure the inter-core crosstalk since components different from crosstalk-derived components in optical power are reduced.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: July 5, 2016
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Tetsuya Hayashi, Osamu Shimakawa
  • Patent number: 9366796
    Abstract: A side lighting optical fiber 1 having a core 2 containing a first light scattering agent 4, and a clad disposed generally concentric to the core and containing a second light scattering agent 5, such that light transmittance of the clad 3 at wavelength of 550 nm is in the range of 70-90%.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: June 14, 2016
    Assignee: 3M Innovative Properties Company
    Inventor: Shinichi Irie
  • Patent number: 9366942
    Abstract: An infrared cut filter may be used with an image sensor to remove infrared light components from image light received from a first side of the infrared cut filter prior to the image light reaching the image sensor to be disposed on a second side of the infrared cut filter. The infrared cut filter includes at least one red absorbing layer and an infrared reflector. The at least one red absorbing layer partially absorbs red light components within the image light. The infrared reflector reflects the infrared light components. The infrared reflector is disposed between the red absorbing layer and the first side of the infrared cut filter while the at least one red absorbing layer is disposed between the infrared reflector and the second side of the infrared cut filter.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: June 14, 2016
    Assignee: OmniVision Technologies, Inc.
    Inventors: Lu Gao, Hongjun Li
  • Patent number: 9356418
    Abstract: High power fiber lasers include large or very large mode area active fibers. Mode preserving pump combiners are situated to counter-pump the active fiber using one or more pump sources. The mode preserving pump combiners preserve single mode propagation in a signal fiber, and such combiners can be identified based on optical spectra, beam quality, or temporal response. Active fibers can also be included in a pump combiner so that the active fiber is splice free from an input end that receives a seed pulse to an output end. Peak powers of over 100 kW can be obtained.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: May 31, 2016
    Assignee: nLIGHT, Inc.
    Inventors: Matthieu Saracco, David Logan, Timothy S. McComb, Jared Green