With Optical Coupler Patents (Class 385/15)
  • Patent number: 10345576
    Abstract: System and method utilizing a reconfigurable in real-time phase-modulating diffractive device (in a specific case—a 2D array of micro-mirror elements) in conjunction with another diffractive element (active or passive) to spatially steer a beam of polychromatic light such that light reaches the identified target without being substantially angularly dispersed.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: July 9, 2019
    Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
    Inventors: Pierre Alexandre Blanche, Brittany Lynn
  • Patent number: 10338319
    Abstract: A modified directional coupler structure is used to provide a controllable time delay or phase shift for radiation propagating through the structure. A longitudinal displacement of the interaction region of the directional coupler relative to one or both of the waveguides of the directional coupler provides this effect. Double flexure arrangements can be used to provide longitudinal displacement with substantially no corresponding lateral displacement (or vice versa). In some embodiments, lateral and longitudinal displacement of the waveguides of the directional coupler are independently adjustable to provide full control of the power splitting and phase shift/time delay of the directional coupler.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: July 2, 2019
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventor: David A. B. Miller
  • Patent number: 10288823
    Abstract: There is provided an opto-electric hybrid board including an optical waveguide including a linear core held between first and second cladding layers; electrical interconnect lines formed on a surface of the first cladding layer, with a light-permeable insulative layer therebetween; and a light-emitting element and a light-receiving element mounted on mounting pads of the electrical interconnect lines. Light reflecting surfaces for reflecting light are formed in end portions of the core. The light reflecting surfaces are concave surfaces curved in at least one of the width direction and the thickness direction of the core, and having a radius of curvature greater than 50 ?m and less than 1500 ?m as measured in the width direction of the core and a radius of curvature greater than 200 ?m and less than 1500 ?m as measured in the thickness direction of the core.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: May 14, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Yuichi Tsujita, Naoyuki Tanaka
  • Patent number: 10284323
    Abstract: A wavelength division multiplexing (WDM) transceiver module comprising an optical port and an optical modulator is disclosed herein. The optical port includes a data transmit and receive optical fiber connector and a laser source-in optical fiber connector. The laser source-in optical fiber connector is configured to couple to a laser source external to the WDM transceiver module, and provide polarization alignment for a polarization-maintaining fiber. The optical modulator is configured to receive a laser output from the external laser source via the polarization-maintaining fiber and modulate the laser output based on analog electrical signals generated by a digital signal processor. The WDM transceiver module may not including an onboard laser source.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: May 7, 2019
    Assignee: Juniper Networks, Inc.
    Inventor: Massimiliano Salsi
  • Patent number: 10281663
    Abstract: An example photonic integrated circuit includes a transmitter circuit with a optical communication path to an optical coupler configured to couple with an optical fiber. The optical communication path has a propagation direction away from the transmitter circuit and towards the optical coupler. A counter-propagating tap diverts light sent by a light source backward against the propagation direction of the optical communication path. A photodiode receives the diverted light and measures its power level. The photodiode generates a feedback signal for the optical coupler and provides the feedback signal to the optical coupler. The optical coupler receives the feedback signal and adjusts a coupling alignment of the optical communication path to the optical fiber based on the feedback signal, which indicates the measured power level of the diverted counter-propagating light.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: May 7, 2019
    Assignee: Juniper Networks, Inc.
    Inventors: Brandon W. Buckley, Brian Robert Koch, John Garcia, Jared Bauters, Sudharsanan Srinivasan, Anand Ramaswamy
  • Patent number: 10261260
    Abstract: The disclosure relates to a tunable microring resonator, comprising a primary waveguide having first and second ends, a plurality of secondary waveguides each having a different length and each having first and second ends and a Micro-Electro-Mechanical System (MEMS) adjustable to optically couple at least a first end of the primary waveguide with a first respective end of a selected secondary waveguide thereby allowing light to circulate within the tunable microring resonator.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: April 16, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Mehrdad Mir Shafiei, Robert Brunner, Stephane Lessard, Julie Dufort
  • Patent number: 10254625
    Abstract: An optical signal processing device with a transponder aggregator function by which theoretical loss is not increased even if the number of necessary transponders is increased. Optical signals inputted from input ports are inputted to a PLC. The PLC has SBTs. The input ports are connected to the input-end SBT, and a plane wave is outputted from an output end of the PLC to the space side at an angle different for each input port. Optical signals outputted by the PLC are changed in their optical paths on the x-z plane by a cylindrical lens (Lsp) designed to refract optical signals in the x-axis direction, and are reflected by an LCOS at different regions corresponding to the positions of the input port. The reflected optical signals are incident on the output-end SBTs on the PLC, and are outputted to output ports via demultiplex parts.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: April 9, 2019
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Kenya Suzuki, Kei Kuwabara, Yuichi Higuchi, Mitsumasa Nakajima, Yuichiro Ikuma, Osamu Moriwaki, Tetsuo Takahashi, Naoki Ooba, Yuzo Ishii
  • Patent number: 10230468
    Abstract: Spatial division multiplexing (SDM) allows multiple optical signals to be multiplexed onto a single optical link. Performance of SDM systems may be improved by monitoring performance metrics indicative of crosstalk between the spatially multiplexed signals and adjusting at least one transmission characteristic of one or more of the multiplexed signals in order to reduce the impact of the intermodal crosstalk.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: March 12, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Mohammad Mehdi Mansouri Rad, Irfan Muhammad Fazal
  • Patent number: 10222567
    Abstract: There is provided an electronic device including: a receptacle comprising at least two electrical contacts and a plurality of a light-emitting parts configured to emit laser light for performing communication by light to a sink device; and a light emission control part configured to control emission of laser light from the plurality of light-emitting parts, wherein the light emission control parts starts control of the emission of the laser light from the plurality of light-emitting parts by a current when a cable is connected to the receptacle and the current flow to the electrical contacts from the sink device.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: March 5, 2019
    Assignee: SONY CORPORATION
    Inventors: Kazuyoshi Suzuki, Gen Ichimura, Hideyuki Suzuki, Kazuaki Toba, Masanari Yamamoto
  • Patent number: 10200142
    Abstract: An optical receiver, used in wavelength-division multiplexing, has multiple photodetectors per channel. The optical receiver comprises a demultiplexer to separate incoming light into different output waveguides, one output waveguide for each channel. A splitter is used in each output waveguide to split each output waveguide into two or more branches. A separate photodetector is coupled with each branch so that two or more photodetectors are used to measure each channel.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: February 5, 2019
    Assignee: Skorpios Technologies, Inc.
    Inventors: Guoliang Li, Murtaza Askari
  • Patent number: 10191236
    Abstract: A high-speed multi-channel optical transmitter module includes a plurality of laser-diode (LD) components, a plurality of photo-diode (PD) components, an MT ferrule, and a waveguide component. These components are firstly packaged as sub-modules individually, and then these sub-modules are packaged to form the high-speed multi-channel optical transmitter module. Therefore, the amount of individual components contained in the module is decreased, the complexity of structure is simplified, the precision of positioning is increased, such that the time and labors required in the assembling and packaging processes can be decreased, and the defect-free rate of products can be increased.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: January 29, 2019
    Assignee: TrueLight Corporation
    Inventor: Tzu-Ching Yeh
  • Patent number: 10191343
    Abstract: The invention relates to a device for forming laser pulses comprising: an input for a pulsed laser beam; a spatial phase modulator (300), arranged on the trajectory of said pulsed laser beam so as to be illuminated thereby; a control means designed to configure said spatial phase modulator so as to emulate a diffraction grating (3, 3?) having a diffraction efficiency that varies along one spatial direction (s) identified by the intersection of the modulator surface with the diffraction plane (xz); and spatial filtering means (5) for a light beam diffracted by said grating; whereby a laser pulse (P1) at the device input is converted to a train of elementary output pulses (PS) having temporal intensity and/or phase and/or polarization modulation. The invention further relates to a laser pulse forming process based on the use of such a device.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: January 29, 2019
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Frederic Louradour, Vincent Kermene, Alain Barthelemy, Eric Suran, Tigran Mansuryan
  • Patent number: 10181968
    Abstract: A system and method for backchannel closed loop feedback for channel equalization over Ethernet. Closed loop backchannel feedback for real-time transmitter adaptive equalization is provided for a pair of non-ideal duplex communication channels. The real-time transmitter adaptive equalization enables use of low cost relaxed specification transmitter modules at high data rates.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: January 15, 2019
    Assignee: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITED
    Inventors: Robert John Stone, Howard Frazier
  • Patent number: 10178452
    Abstract: A switch module includes a switch integrated circuit (IC), an InP chip, and a planar lightwave circuit (PLC). The InP chip may include a plurality of light sources, an optical splitter, and a plurality of modulators.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: January 8, 2019
    Assignee: Kaiam Corp.
    Inventors: Bardia Pezeshki, John Heanue, Lucas Soldano, Charles Amsden
  • Patent number: 10161768
    Abstract: A high-speed interrogation system is provided for interferometric sensors, one example of which is an EFPI sensor, that operates based on spectral interference. The system uses a two mode operation that includes a lower speed, accurate absolute measurement mode and a higher speed, relative measurement mode. The system achieves greater overall measurement accuracy and speed than known sensor interrogation approaches.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: December 25, 2018
    Assignee: LUNA INNOVATIONS INCORPORATED
    Inventors: Janet Renee Pedrazzani, Matthew Davis, Evan M. Lally
  • Patent number: 10151925
    Abstract: A head-mounted display apparatus includes a display, a couple-in optics module and a couple-out optics module. The display is arranged for displaying at least an image. The couple-in optics module is arranged for receiving the image from the display and directing the received image to another direction. The couple-out optics module is arranged for receiving the directed image from the couple-in optics module to generate an output image directly to a human eye when a user wears the head-mounted display apparatus. In addition, an aspect ratio of the image generated from display is different from an aspect ratio of the output image.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: December 11, 2018
    Assignee: Himax Display, Inc.
    Inventors: Kuan-Hsu Fan-Chiang, Biing-Seng Wu
  • Patent number: 10154323
    Abstract: A network appliance may include a signal splitter that splits an incoming signal into multiple portions. The signal splitter can direct one portion of the incoming signal to a switching fabric and another portion of the incoming signal to an optical switch. By monitoring the power intensity of the portion of the incoming signal received by the switching fabric, the network appliance can seamlessly switch between a bypass traffic path and a pass-through traffic path without losing network traffic caused by gaps in network connectivity. Such a configuration also enables the network appliance to maintain an accurate record of the logical connectivity state even when the network appliance is in the bypass state (i.e., when network traffic bypasses the switching fabric of the network appliance).
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: December 11, 2018
    Assignee: Gigamon Inc.
    Inventor: Sitti Amarittapark
  • Patent number: 10126494
    Abstract: The inventive configurable optical fiber polarization mode coupler is capable of providing a low-loss, high-coupling coefficient interface with high accuracy and easy alignment between a plurality of optical fibers (or other optical devices) with a first channel-to-channel spacing, and an optical device having a plurality of closely-spaced waveguide interfaces with a second channel-to-channel spacing, where each end of the optical fiber coupler array is configurable to have different channel-to-channel spacing, each matched to a corresponding one of the first and second channel-to-channel spacing, and that are preferably optimized for use with photonic integrated circuits, such as coupling to dense optical input/output interfaces, wafer-level testing, etc.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: November 13, 2018
    Assignee: Chiral Photonics, Inc.
    Inventor: Victor Il'ich Kopp
  • Patent number: 10126507
    Abstract: A multiplexer/demultiplexer for at least two wavelengths in O-band. The multiplexer/demultiplexer includes a silicon waveguide block having a first port, a second/third port respectively in bar/cross position at an opposing end plane relative to the first port. The silicon waveguide block is configured to provide a general interference excitation of a light wave of a first wavelength and a second wavelength respectively selected from two windows in O-band. The light wave is either inputted via the first port and split into a first output light of the first wavelength out of the second port and a second output light of the second wavelength out of the third port, or is combined of a first input light of the first wavelength from the second port and a second input light of the second wavelength from the third port and outputted via the first port with both wavelengths.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: November 13, 2018
    Assignee: INPHI CORPORATION
    Inventor: Jie Lin
  • Patent number: 10119871
    Abstract: A pressure sensing system includes a circuit board, a case, a cover layer, a plurality of light emitters, and a photo detector. The circuit board has a top surface and a bottom surface. The case is located near the bottom surface of the circuit board. The distance between circuit board and the case decreases when the circuit board is subjected to a pressure. The cover layer covers a part of the top surface and a part of the bottom surface, wherein a part of the top surface which is not covered by the cover layer includes a plurality of first passing zone and a second passing zone, and a part of the bottom surface which is not covered by the cover layer includes a plurality of bottom passing zone. The light emitters are located on the first passing zone, respectively, and the photo detector is located on the second passing zone.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: November 6, 2018
    Assignee: PEGATRON CORPORATION
    Inventor: Yu-Feng Kuo
  • Patent number: 10101536
    Abstract: A multichannel optical coupler array comprises a coupler housing structure and longitudinal waveguides. At least one of the longitudinal waveguides is a vanishing core waveguide. Light traveling from a first end to a second end can escape from an inner vanishing core into a corresponding outer core proximally to an intermediate cross section, and can escape from the outer core into a combined waveguide formed by at least two neighboring outer cores proximally to the second end.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: October 16, 2018
    Assignee: Chiral Photonics, Inc.
    Inventors: Victor Il'ich Kopp, Jongchul Park, Jonathan Singer, Daniel Neugroschl
  • Patent number: 10078233
    Abstract: An example device in accordance with an aspect of the present disclosure includes a first semiconductor layer disposed on a substrate, a dielectric layer disposed between the first semiconductor layer and a second semiconductor layer dissimilar from the first semiconductor layer. A capacitor is formed of at least a portion of the first semiconductor layer, the dielectric layer, and the second semiconductor layer, and is to be included in an optical waveguide resonator.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: September 18, 2018
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Di Liang, Geza Kurczveil, Marco Fiorentino, Raymond G. Beausoleil
  • Patent number: 10073221
    Abstract: Disclosed herein are various embodiments of an optical cross-connect switch in which optical beamforming is used to generate desired (e.g., technically beneficial) beam profiles at the beam-steering element of the switch. An example beam profile that can be generated in this manner is a substantially rectangular beam profile generated from an input optical beam having a substantially Gaussian beam profile. The use of rectangular beam profiles may be beneficial because such beam profiles can be used to increase the optical fill factor of the beam-steering element of the switch, thereby enabling the switch to have a higher number of optical ports and/or a lower cost per optical port than comparable conventional optical cross-connect switches. In an example embodiment, the disclosed optical cross-connect switch can be used to implement a wavelength-selective optical router.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: September 11, 2018
    Assignee: NOKIA OF AMERICA CORPORATION
    Inventors: Nicolas K. Fontaine, David T. Neilson, Roland Ryf
  • Patent number: 10073220
    Abstract: Provided is an optical coupler configured to cause an NA of light, which exits a taper fiber, to be smaller as compared with a conventional optical coupler. A taper fiber has a high refractive index part which is provided inside a core of the taper fiber and which has a refractive index smaller than a refractive index ncore of the core. An exit end surface of each GI fiber is bonded to an entrance end surface of the taper fiber so that at least a part of the exit end surface of the each GI fiber overlaps with a section of the high refractive index part. A relative refractive index difference of the taper fiber is smaller than 0.076%.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: September 11, 2018
    Assignee: FUJIKURA LTD.
    Inventors: Tomoyuki Fujita, Kentaro Ichii, Ken Katagiri, Kenichi Ohmori, Rintaro Kitahara, Tatsuya Kishi
  • Patent number: 10041875
    Abstract: The present disclosure concerns an apparatus (10) and method for reading out an optical chip (20). A light source (13) is arranged for emitting single mode source light (S1) from its emitter surface (A1) towards an optical input (21) of the optical chip (20). A light detector (14) is arranged for receiving measurement light (S2) impinging onto its receiver surface (A2) from an optical output (22) of the optical chip (20), and measuring said received measurement light (S2). The emitted source light (S1) is aligned to enter the optical input (21) of the optical chip (20) and the measurement light (S2) is aligned back onto the receiver surface (A2). The receiver surface (A2) is larger than the emitter surface (A1) for facilitating the overall alignment.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: August 7, 2018
    Assignee: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
    Inventors: Bart Michiel De Boer, Peter Johan Harmsma, Dario Maria Rosario Lo Cascio
  • Patent number: 10036853
    Abstract: A multiplexer/demultiplexer for at least two wavelengths in O-band. The multiplexer/demultiplexer includes a silicon waveguide block having a first port, a second/third port respectively in bar/cross position at an opposing end plane relative to the first port. The silicon waveguide block is configured to provide a general interference excitation of a light wave of a first wavelength and a second wavelength respectively selected from two windows in O-band. The light wave is either inputted via the first port and split into a first output light of the first wavelength out of the second port and a second output light of the second wavelength out of the third port, or is combined of a first input light of the first wavelength from the second port and a second input light of the second wavelength from the third port and outputted via the first port with both wavelengths.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: July 31, 2018
    Assignee: INPHI CORPORATION
    Inventor: Jie Lin
  • Patent number: 10027416
    Abstract: Methods of decoding N superimposed coherent optical transmission modes transmitted along a multimode optical fiber are provided where the optical signal detector comprises coherent detection hardware and a digital signal processor. The optical signals are split into N optical detection channels of the coherent detection hardware, which is used to measure the phase and amplitude of the output optical signals as a vector field matrix [ê]1×n. The digital signal processor determines the output principal states [PSout]1×n of the output optical signals from the principal state eigenvectors of an output matrix corresponding to the N propagating optical signals at the receiving portion of the data transmission link and extracts the input optical signals [M]In from the output optical signals using the output principal states [PSout]1×n, the vector field matrix [ê]1×n of the output optical signals, and a time delay ? of each output signal.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: July 17, 2018
    Assignee: Corning Incorporated
    Inventors: Robert R Alfano, Giovanni Milione, Daniel Aloysius Nolan
  • Patent number: 10018560
    Abstract: A metrology system includes an illumination source configured to generate an illumination beam, one or more illumination optics configured to direct the illumination beam to a sample, one or more collection optics configured to collect illumination emanating from the sample, a detector, and a hyperspectral imaging sub-system. The hyperspectral imaging sub-system includes a dispersive element positioned at a pupil plane of the set of collection optics configured to spectrally disperse the collected illumination, a lens array including an array of focusing elements, and one or more imaging optics. The one or more imaging optics combine the spectrally-dispersed collected illumination to form an image of the pupil plane on the lens array. The focusing elements of the lens array distribute the collected illumination on the detector in an arrayed pattern.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: July 10, 2018
    Assignee: KLA-Tencor Corporation
    Inventor: Andrew V. Hill
  • Patent number: 10007064
    Abstract: A waveguide resonator component, which can be used, for example, in integrated circuits, in which a substrate having two waveguides is present and a microtube is present as resonator, wherein the resonator has a respective recess in the region of each waveguide in order to form an intermediate space between the waveguide and the resonator. The aim is additionally achieved by a method in which a sacrificial layer is applied to a substrate having two waveguides and at least a second layer is applied to the sacrificial layer, and thereafter the sacrificial layer is at least partially removed and the resonator is produced in the form of a microtube by rolling up the second layer and possible additional layers.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: June 26, 2018
    Assignee: LEIBNIZ-INSTITUT FUER FESTKOERPUR-UND WERKSTOFFFORSCHUNG DRESDEN E.V
    Inventors: Stefan Boettner, Oliver G. Schmidt
  • Patent number: 9971095
    Abstract: An optical communication terminal is configured to operate in two different complementary modes of full duplex communication. In one mode, the terminal transmits light having a first wavelength and receives light having a second wavelength along a common free space optical path. In the other mode, the terminal transmits light having the second wavelength and receives light having the first wavelength. The terminal includes a steering mirror that directs light to and from a dichroic element that creates different optical paths depending on wavelength, and also includes spatially separated emitters and detectors for the two wavelengths. A first complementary emitter/detector pair is used in one mode, and a second pair is used for the other mode. The system also includes at least two ferrules. Each ferrule operates with a single emitter/detector pair. The ferrules are designed to operate interchangeably with either emitter/detector pair.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: May 15, 2018
    Assignee: X Development LLC
    Inventors: Nam-Hyong Kim, Baris Ibrahim Erkmen, Edward Allen Keyes, Robert Todd Belt
  • Patent number: 9967048
    Abstract: A wavelength division multiplexing (WDM) transceiver module comprising an optical port and an optical modulator is disclosed herein. The optical port includes a data transmit and receive optical fiber connector and a laser source-in optical fiber connector. The laser source-in optical fiber connector is configured to couple to a laser source external to the WDM transceiver module, and provide polarization alignment for a polarization-maintaining fiber. The optical modulator is configured to receive a laser output from the external laser source via the polarization-maintaining fiber and modulate the laser output based on analog electrical signals generated by a digital signal processor. The WDM transceiver module may not including an onboard laser source.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: May 8, 2018
    Assignee: Juniper Networks, Inc.
    Inventor: Massimiliano Salsi
  • Patent number: 9952391
    Abstract: An optical transmission module includes a light emitting device for transmitting a first optical signal, a light receiving device for receiving a second optical signal, an optical fiber for guiding a third optical signal in which the first optical signal and the second optical signal are coupled, and an optical waveguide substrate having an optical waveguide made of first resin, wherein a groove formed on the optical waveguide substrate is provided with a prism having the optical fiber and a reflective face through which the first optical signal transmit, a first side face of the prism contacts a first wall face of the groove, and a second side face thereof contacts a second wall face of the groove.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: April 24, 2018
    Assignee: OLYMPUS CORPORATION
    Inventors: Youhei Sakai, Yusuke Nakagawa
  • Patent number: 9946031
    Abstract: An optical switching arrangement includes a plurality of input and output waveguides. Each of the input waveguides has a first plurality of 1×2 optical switches associated therewith and extending therealong. Each of the output waveguides has a second plurality of 1×2 optical switches associated therewith and extending therealong. Each of the first and second plurality of optical switches is selectively switchable between a through-state and a cross-state. The input and output waveguides are arranged such that optical losses arising for any wavelength of light only depend on a length of segments of the input and output waveguides located between adjacent ones of the 1×2 optical switches. Each of the first plurality of optical switches associated with each of the input waveguides is optically coupled to one of the second plurality of optical switches in a different one of the output waveguides when both optical switches are in the cross-state.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: April 17, 2018
    Assignee: Nistica, Inc.
    Inventor: Jefferson L. Wagener
  • Patent number: 9915784
    Abstract: Aspects of the invention are directed to a method for forming an optical waveguide structure. Initially, a base film stack is received with an optical waveguide feature covered by a lower dielectric layer. An etch stop feature is then formed on the lower dielectric layer, and an upper dielectric layer is formed over the etch stop feature. Subsequently, a trench is patterned in the upper dielectric layer and the etch stop feature at least in part by utilizing the etch stop feature as an etch stop. Lastly, a waveguide coupler feature is formed in the trench, at least a portion of the waveguide coupler feature having a refractive index higher than the lower dielectric layer and the upper dielectric layer. The waveguide coupler feature is positioned over at least a portion of the optical waveguide feature but is separated from the optical waveguide feature by a portion of the lower dielectric layer.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: March 13, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Russell A. Budd, Fuad E. Doany, Christopher V. Jahnes, Benjamin G. Lee, Laurent Schares
  • Patent number: 9915787
    Abstract: According to embodiments of the present invention, an optical coupling device is provided. The optical coupling device includes a substrate, and a grating arrangement including a plurality of grating elements, the plurality of grating elements being defined on one surface of the substrate, wherein the plurality of grating elements are arranged to have a first period along a first direction, and a second period along a second direction orthogonal to the first direction, the first period being different from the second period. According to further embodiments of the present invention, a photonic integrated circuit and a method of forming an optical coupling device are also provided.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: March 13, 2018
    Assignee: Agency for Science, Technology and Research
    Inventors: Chao Li, Patrick Guo-Qiang Lo
  • Patent number: 9917650
    Abstract: Photonic integration has primarily sought to exploit optical parallelism through wavelength division multiplexing whilst in many instances “brute-force” time division multiplexing offers benefits through reduced complexity and cost. However, photoreceivers are primarily the same now for operation at 10 Gb/s, 20 Gb/s, 40 Gb/s and above as 20 or 25 years ago and exploit the same optical detection—amplification—logic processing design. However, high speed low cost electronics ca be leveraged in conjunction with optical time sampling and logic to provide a new design paradigm. An incoming XGbs?1 optical data stream is sampled and processed by N photodetectors each operating at (X/N)Gbs?1 rather than the current direct XGbs?1 front-end of the prior art. Flexibility for the designer in establishing N within optical layer constraints, electronics capabilities etc.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: March 13, 2018
    Assignees: TRANSFERT PLUS, SOCIÉTÉ EN COMMANDITE, THE ROYAL INSTITUTION FOR THE ADVANCEMENT OF LEARNING/ MCGILL UNIVERSITY
    Inventors: Odile Liboiron-Ladouceur, Md. Shafiqul Hai, Michael Menard
  • Patent number: 9896173
    Abstract: An apparatus for adjusting positions of an outboard propulsion unit of a marine vessel comprises a jack plate having a jack plate actuator capable of moving the propulsion unit between raised and lowered positions and a swivel bracket having a swivel bracket actuator capable of pivoting the propulsion unit between raised and lowered trim positions. There is a control system operatively connected to the jack plate actuator and the swivel bracket actuator. The control system includes a first manual control which incrementally moves the jack plate an incremental amount each time the first manual control is actuated and a second manual control which incrementally pivots the swivel bracket an incremental amount each time the second manual control is actuated. Movement of the propulsion unit within a tilt range may be detected and the jack plate may be moved to a preset position.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: February 20, 2018
    Assignee: Marine Canada Acquisition Inc.
    Inventors: Davor Baros, Richard D. Pierce, Eric B. Fetchko
  • Patent number: 9884202
    Abstract: A device (10) for light based skin treatment is provided. The device (10) comprises a light source (18) for providing an incident light beam (21) for treating a skin (30), optical elements for focusing the incident light beam (21) in a focal point (22) inside the skin (30), and a skin interface element (11) for, during use of the device (10), providing optical coupling of the incident light beam (21) from the device (10) into the skin (30). The skin interface element (11) comprises a transparent exit window (12) for allowing the incident light beam (21) to leave the device (10), on top of the exit window (12), a transparent mixture (13) of a polar substance and an apolar substance, and on top of the transparent mixture (13), a transparent foil (14), the transparent foil (14) being more hydrophobic than the exit window (12).
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: February 6, 2018
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Babu Varghese, Rieko Verhagen
  • Patent number: 9866309
    Abstract: Aspects of the subject disclosure may include, for example, a host node device having a terminal interface that receives downstream channel signals from a communication network and send upstream channel signals to the communication network. An access point repeater launches the downstream channel signals as guided electromagnetic waves on a guided wave communication system and to extract a first subset of the upstream channel signals from the guided wave communication system. A radio wirelessly transmits the downstream channel signals to at least one client node device and to wirelessly receive a second subset of the upstream channel signals from the at least one client node device. Other embodiments are disclosed.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: January 9, 2018
    Assignee: AT&T INTELLECTUAL PROPERTY I, LP
    Inventors: Robert Bennett, Paul Shala Henry, Irwin Gerszberg, Farhad Barzegar, Donald J Barnickel, Thomas M. Willis, III
  • Patent number: 9860616
    Abstract: A network appliance may include a signal splitter that splits an incoming signal into multiple portions. The signal splitter can direct one portion of the incoming signal to a switching fabric and another portion of the incoming signal to an optical switch. By monitoring the power intensity of the portion of the incoming signal received by the switching fabric, the network appliance can seamlessly switch between a bypass traffic path and a pass-through traffic path without losing network traffic caused by gaps in network connectivity. Such a configuration also enables the network appliance to maintain an accurate record of the logical connectivity state even when the network appliance is in the bypass state (i.e., when network traffic bypasses the switching fabric of the network appliance).
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: January 2, 2018
    Assignee: Gigamon Inc.
    Inventor: Sitti Amarittapark
  • Patent number: 9857536
    Abstract: The inventive optical component assembly advantageously enables a multi-waveguide optical component (such as the inventive optical fiber coupler array, a multi-core optical fiber, etc.), to be coupled to at least one waveguide of an optical device at a predefined coupling angle. The optical component assembly of the present invention comprises a multi-waveguide optical component with an output end, a prism having an input surface, an output surface, and an internal reflective surface with a predefined reflection angle, and a GRIN lens, positioned between the component output end and the prism input surface, along a longitudinal axis of the multi-waveguide optical component.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: January 2, 2018
    Assignee: Chiral Photonics, Inc.
    Inventors: Victor Il'ich Kopp, Jonathan Singer, Daniel Neugroschl, Jongchul Park, Mitchell S. Wlodawski
  • Patent number: 9851508
    Abstract: In an example embodiment, a WSS may include a steering element, an optical subsystem, and a cylindrical lens. The optical subsystem may include a collimating lens and a dispersive element. The optical subsystem may be located between a fiber array and the steering element. The collimating lens may be located between the fiber array and the dispersive element. The cylindrical lens may be located between the optical subsystem and the steering element.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: December 26, 2017
    Assignee: Finisar Corporation
    Inventor: Brendan Hamel-Bissell
  • Patent number: 9851503
    Abstract: A compact, low-loss and wavelength insensitive Y-junction for submicron silicon waveguides. The design was performed using FDTD and particle swarm optimization (PSO). The device was fabricated in a 248 nm CMOS line. Measured average insertion loss is 0.28±0.02 dB across an 8-inch wafer. The device footprint is less than 1.2 ?m×2 ?m, orders of magnitude smaller than MMI and directional couplers.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: December 26, 2017
    Assignee: Elenion Technologies, LLC
    Inventors: Yang Liu, Yangjin Ma, Ruizhi Shi, Michael J. Hochberg, Yi Zhang, Shuyu Yang, Thomas Wetteland Baehr-Jones
  • Patent number: 9853345
    Abstract: A multichannel splitter formed from 1 to 2 splitters. 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. First respective outputs of the 1 to 2 splitters define output terminals of the multichannel splitter.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: December 26, 2017
    Assignee: STMicroelectronics SA
    Inventors: Baudouin Martineau, Olivier Richard, Frédéric Gianesello
  • Patent number: 9820632
    Abstract: An elongated optical guidewire assembly, such as for optically imaging a patient from within another catheter, can have a lead portion and a probe portion. A connector between the lead and probe portions can include a bore including first and second bore ends. The first bore end can include a substantially circular cross-sectional profile. The second bore end can include a substantially non-circular cross-sectional profile. The bore can be configured to receive the optical guidewire assembly at the first bore end and configured to deform the optical guidewire assembly at the second bore end such that probe and lead ends of the optical guidewire assembly are deformed into a substantially non-circular profile and located between the first and second bore ends.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: November 21, 2017
    Assignee: Vascular Imaging Corporation
    Inventor: Michael J. Eberle
  • Patent number: 9819435
    Abstract: A high resolution, wide spectral range, optical apparatus that includes an optical resonator cavity and a wavelength demultiplexer, arrangeable in multiple configurations. A method for increasing the resolution of a wavelength demultiplexer involves inputting light into an optical resonant cavity; inputting a plurality of different resonant output wavelengths to a wavelength demultiplexer; and routing each different resonant wavelength to a different output waveguide of the demultiplexer to generate a demultiplexer output spectrum. The method further involves performing either a time serialization or a space serialization procedure to increase the channel density and fully cover the spectrum of interest.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: November 14, 2017
    Assignee: CORNELL UNIVERSITY
    Inventors: Michal Lipson, Bernado Kyotoku, Long Chen
  • Patent number: 9817191
    Abstract: A multichannel optical coupler array comprises a coupler housing structure and longitudinal waveguides. At least one of the longitudinal waveguides is a vanishing core waveguide. The coupler housing structure at a proximity to a first end has one of the following cross sectional configurations: a ring surrounding the longitudinal waveguides, or a structure with holes, at least one hole containing at least one of the longitudinal waveguides.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: November 14, 2017
    Assignee: Chiral Photonics, Inc.
    Inventors: Victor Il'ich Kopp, Daniel Neugroschl, Jonathan Singer
  • Patent number: 9798078
    Abstract: The present invention provides a filter composed of two layers of materials with different expansion coefficients. The difference between a length added to a whole section length of an outer low-expansion coefficient metal sleeve by a temperature change and a length added to a length of a whole section of high-expansion coefficient cylindrical coil spring arranged therein by the temperature change causes a stress-releasing or stress-increasing effect on the whole section of pre-tensioned high-expansion coefficient cylindrical coil spring arranged therein, so that a structure capable of compensating the wavelength shift of the fiber Bragg's grating filter caused by temperature by increasing or decreasing the refractive index is achieved.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: October 24, 2017
    Assignee: JINN HER ENTERPRISE CO., LTD.
    Inventors: Yung-Yu Tsai, Chun-Chu Yang
  • Patent number: 9772461
    Abstract: A semiconductor integrated circuit that reduces a loss in an electrical signal and a method for manufacturing the semiconductor integrated circuit are provided. The semiconductor integrated circuit comprises a first region on which an optical circuit is to be formed and a second region on which an electrical signal wiring is to be formed. The first region comprises an Si substrate (502), a BOX layer (504) formed on the Si substrate (502), a first SOI layer (506) formed as an optical circuit on the BOX layer (504), and a first SiO2 layer (508) formed on the first SOI layer (506). The second region comprises the Si substrate (502), the BOX layer (504), a second SiO2 layer (508) formed on the BOX layer (504), and an electrical signal wiring (510) formed on the second SiO2 layer (508).
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: September 26, 2017
    Assignee: PHOTONICS ELECTRONICS TECHNOLOGY RESEARCH ASSOCIATION
    Inventors: Yasuyuki Suzuki, Kenichiro Yashiki, Kazuhiko Kurata
  • Patent number: 9766473
    Abstract: In an optical components automatic alignment robot, a motorized target moves closer or further from a digital camera being tested or assembled. A light sensor is used to automatically calibrate an ultraviolet (UV) or other light source used for curing adhesive. An automatic surface finder is used to accurately and repeatably find a surface on which adhesive is to be dispensed.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: September 19, 2017
    Assignee: Automation Engineering, Inc.
    Inventors: Dan Tamasanis, Jonathan P. Berg, John Alden