"y" Coupler Patents (Class 385/45)
  • Patent number: 10295748
    Abstract: A multimode interference (MMI) coupler with an MMI region of curved edges, and a method of design and manufacturing by using a computerized optimization algorithm to determine a favorable set of segment widths for the MMI region for a predefined set of coupler design parameters.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: May 21, 2019
    Assignee: Elenion Technologies, LLC
    Inventors: Yangjin Ma, Michael J. Hochberg
  • Patent number: 10130424
    Abstract: Embodiments of the invention include a treatment device and corresponding treatment method for laser wound healing, the device and method making use of the simultaneous action of multiple laser types and laser wavelengths which are applied at human tissue. The treatment device generally includes a laser system and a hand-piece which is coupled to the laser system. The hand-piece is designed so that one or multiple laser beams are applied at relatively small spot and at a relatively high power level, and are surrounded by a relatively large spot of another laser beam with a relatively low power level. In a preferred implementation, the hand-piece is adapted to facilitate the emission of first and second laser beams together with a third laser beam which is delivered at a different spatial profile in comparison to the first and second laser beams.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: November 20, 2018
    Assignee: BIOLASE, INC.
    Inventors: Dmitri Boutoussov, Vladimir Netchitailo, Amado Carino
  • Patent number: 10126501
    Abstract: A reflective structure includes an input/output port and an optical splitter coupled to the input/output port. The optical splitter has a first branch and a second branch. The reflective structure also includes a first resonant cavity optically coupled to the first branch of the optical splitter. The first resonant cavity comprises a first set of reflectors and a first waveguide region disposed between the first set of reflectors. The reflective structures further includes a second resonant cavity optically coupled to the second branch of the optical splitter. The second resonant cavity comprises a second set of reflectors and a second waveguide region disposed between the second set of reflectors.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: November 13, 2018
    Assignee: Skorpios Technologies, Inc.
    Inventors: Derek Van Orden, Amit Mizrahi, Timothy Creazzo, Stephen B. Krasulick
  • Patent number: 10072813
    Abstract: A vehicular lamp includes a light emitter, a first light guide, and a second light guide. The first light guide has a first incident surface, a first light guiding portion that guides the entering light, a first light emission surface that emits light guided by the first light guiding portion, and a first reflecting surface that reflects the light guided by the first light guiding portion in a direction toward the second light guide. The second light guide has a second light emission surface that emits light that enters the second light guide after being reflected by the first reflecting surface, and a second reflecting surface that reflects the light that enters the second light guide after being reflected by the first reflecting surface toward the second light emission surface.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: September 11, 2018
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Hiroya Koizumi, Kenichi Motomura, Yasuo Teranishi, Hajime Takeda
  • Patent number: 10037773
    Abstract: A heat assisted magnetic recording (HAMR) writer is described. The HAMR writer is coupled with a laser that provides energy having a first polarization state. The HAMR writer has an air-bearing surface (ABS) configured to reside in proximity to a media during use, a plurality of waveguides, a main pole and at least one coil. The main pole writes to the media and is energized by the coil(s). The waveguides receive the energy from the laser and direct the energy toward the ABS. The waveguides include an input waveguide and an output waveguide. The input waveguide is configured to carry light having the first polarization state. The output waveguide is configured to carry light having a second polarization state different from the first polarization state. The waveguides are optically coupled and configured to transfer the energy from the first polarization state to the second polarization state.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: July 31, 2018
    Assignee: Western Digital (Fremont), LLC
    Inventors: Derek A. Van Orden, Sergei Sochava, Jianwei Mu, Ge Yi
  • Patent number: 9389426
    Abstract: A light consolidation assembly for attaching to a light pipe includes a housing having therein at least a first light source configured to generate a first light and a second light source configured to generate a different, second light. The light consolidation assembly also includes a light consolidator having a body including a light entry end coupled to the housing and a light exit end. The light entry end has multiple spaced-apart branches that converge into a stem that extends from the multiple branches to the light exit end. The light consolidator is configured to receive the first and second lights into respective first and second branches of the multiple branches. The first and second lights are directed into the stem and exit the light consolidator at the light exit end for transmission through a light pipe disposed at the light exit end of the light consolidator.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: July 12, 2016
    Assignee: TYCO ELECTRONICS CANADA ULC
    Inventors: Lucian Iordache, Andras Gyimes
  • Patent number: 9360622
    Abstract: A low loss optical crossing and a method of making an optical crossing in a photonic integrated circuit.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: June 7, 2016
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Dominic John Goodwill
  • Patent number: 9329340
    Abstract: In order to provide an optical modulator capable of suppressing generation of mode mismatching light in the Y-multiplexer in the MZ-type waveguide or mixing of the mode mismatching light with the radiation-mode light or the output light, and separately extracting output light and radiation-mode light, there is provided an optical modulator having a Mach-Zehnder type waveguide on a surface of a dielectric substrate, wherein a waveguide after multiplexing in a Y-multiplexer in an output side of the Mach-Zehnder type waveguide is a multiple mode waveguide 2, a subsidiary output waveguide as a high-order mode waveguide 2 is connected to a portion where the multiple mode waveguide is changed to a main output waveguide 3 as a single mode waveguide, and the multiple mode waveguide 2 has a length equal to or longer than 150 ?m.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: May 3, 2016
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Katsutoshi Kondou, Satoshi Oikawa, Toru Sugamata
  • Patent number: 9279941
    Abstract: An optical waveguide lens includes a base, a Y type waveguide, a polarized grating. The Y type waveguide has a first gate, a second gate and a third gate. The first gate is located on one edge of the base, the second gate and the third gate are located on an opposite edge of the base. The polarized grating is formed on the Y type waveguide and adjacent to the first gate of the Y type waveguide.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: March 8, 2016
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Hsin-Shun Huang
  • Patent number: 9223094
    Abstract: A fiber optic cassette includes a body defining a front and an opposite rear. A cable entry location, such as a multi-fiber connector, is defined on the body for a cable to enter the cassette, wherein a plurality of optical fibers from the cable extend into the cassette and form terminations at one or more single or multi-fiber connectors adjacent the front of the body. A flexible substrate is positioned between the cable entry location and the connectors adjacent the front of the body, the flexible substrate rigidly supporting the plurality of optical fibers. Each of the connectors adjacent the front of the body includes a ferrule. Dark fibers can be provided if not all fiber locations are used in the multi-fiber connectors. Multiple flexible substrates can be used with one or more multi-fiber connectors.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: December 29, 2015
    Assignees: Tyco Electronics Nederland BV, Tyco Electronics Corporation
    Inventors: Paul Schneider, Alexander Dorrestein, James Joseph Eberle, Jr.
  • Patent number: 9188759
    Abstract: A fiber optic network device for optically coupling a fiber optic distribution cable with a fiber optic drop cables is disclosed. Disposed within the fiber optic network device is a plurality of optical fibers optically coupled to the distribution cable. A plurality of ports opens into the fiber optic network device. Predetermined ones of the plurality of ports are operable for optically coupling respective predetermined ones of the plurality of optical fibers each to at least one drop cable external to the fiber optic network device. At least one of the predetermined ones of the plurality of ports is a pass-through port operable for optically coupling at least one of the respective pre-determined ones of the plurality of optical fibers to the at least one drop cable through another fiber optic network device.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: November 17, 2015
    Assignee: Corning Cable Systems LLC
    Inventor: Mark E. Conner
  • Patent number: 9164350
    Abstract: An optical circulator includes a first optical isolator including a first port and a second port and a plurality of optical isolators coupled to the second port of the first optical isolator. Each of the plurality of optical isolators comprise a first port and a second port.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: October 20, 2015
    Assignee: Skorpios Technologies, Inc.
    Inventors: Lina He, Amit Mizrahi
  • Patent number: 9158175
    Abstract: In some embodiments, an optical coupler comprises a substrate, and first and second optical waveguides positioned on the substrate. The second optical waveguide extends adjacent to and parallel with the first optical waveguide for at least one effective coupling length, the at least one length having a first end and a second end. The coupler further comprises a first phase shift section forming a portion of the first optical waveguide and located at a first predetermined distance from the first end of the length, and a second phase shift section forming a portion of the second optical waveguide and located at a second predetermined distance from the second end of the length, wherein the first predetermined distance is approximately equal to the second predetermined distance, and wherein the second optical waveguide does not have a phase shift section located at the first predetermined distance from the first end of the length.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: October 13, 2015
    Assignee: K G Technology Associates, Inc.
    Inventors: Silas Kung, Anand Gopinath, Jaesang Oh
  • Patent number: 9122003
    Abstract: A semiconductor optical device includes a light receiving device; an optical waveguide having a mesa structure, the optical waveguide including first, second, third, and fourth waveguide portions; and a passivation layer provided on a side surface of the light receiving device. The mesa structure in the second waveguide portion has a width increasing along the waveguide axis, and the mesa structure in the third waveguide portion has a width decreasing along the waveguide axis. The second waveguide portion includes first and second regions, the first region being optically coupled to the first waveguide portion and the second region being optically coupled to the third waveguide portion. The passivation layer is provided on side surfaces of the mesa structure in the second region, the third waveguide portion, and the fourth waveguide portion. The mesa structures in the first waveguide portion and the first region have side surfaces without the passivation layer.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: September 1, 2015
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Yutaka Onishi
  • Patent number: 9121974
    Abstract: A light guide with a bar-like shape that extends in a predetermined direction, having: a reflective surface that reflects light inside the light guide within the light guide; a first output surface that causes light inside the light guide to exit the light guide, the first output surface, when viewed in plan from the predetermined direction, constituting a first are of an ellipse that has a first focal point, along with a second focal point located on the reflective surface, and the first are being closer to the first focal point than to the second focal point; and a second output surface that causes light inside the light guide to exit the light guide, the second output surface, when viewed in plan from the predetermined direction, constituting a second arc of an ellipse that has a third focal point, along with a fourth focal point coinciding with the second focal point, and the second arc being closer to the third focal point than to the fourth focal point.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: September 1, 2015
    Assignee: KONICA MINOLTA, INC.
    Inventor: Masahiko Tanaka
  • Publication number: 20150104130
    Abstract: Embodiments of the present disclosure include devices that split a light beam into two separate paths, with reduced sensitivity to fabrication variation. The devices can operate as 3-dB splitters that divide the input optical energy equally between two output waveguides. Similarly, the devices can also function to combine two light beams into a single path (coupler). The designs make use of adiabatic modal evolution and do not require physical symmetry along the entire device length.
    Type: Application
    Filed: October 14, 2013
    Publication date: April 16, 2015
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Sean Anderson, Ravi Sekhar Tummidi, Mark Webster
  • Patent number: 8979396
    Abstract: A side pump fiber and a method of making a side pump fiber are provided. A plurality of pump fibers can be joined to a side of a signal fiber, at different locations. The method includes creating a lengthwise, tapered, concave pocket cut in a pump (or side pump) fiber, inserting the signal fiber in the pocket cut, and then coupling the side pump fiber to the center fiber at the pocket cut. Optical amplifiers and lasers, as examples, can be made using the above method and side pump fibers.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: March 17, 2015
    Assignee: 3SAE Technologies, Inc.
    Inventor: Robert G. Wiley
  • Patent number: 8977081
    Abstract: A polarization splitter includes a substrate, an asymmetric Y-shaped waveguide, and a pair of strip-shaped electrodes. The substrate is made of a birefringence crystal and includes a surface. The Y-shaped waveguide is formed into the surface and includes an input section for transmitting both transverse electric wave and transverse magnetic wave, a first branch for only transmitting the transverse electric wave, and a second branch for only transmitting the transverse magnetic wave. The first branch and the second branch branch off the input section. The electrodes are positioned on the surface, arranged at two opposite sides of the input section and substantially parallel with a central axis of the input section.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: March 10, 2015
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Hsin-Shun Huang
  • Patent number: 8965146
    Abstract: In a nest MZI modulator in which each arm includes a child MZI, the power consumption is reduced. The hybrid integrated-type nest MZI modulator of the embodiment 1a is configured so that, instead of placing a relative phase adjusting section in a parent MZI, a bias electrode Bias 90° in which an electric field is applied in the same direction to the polarization direction in both of the upper and lower arms is placed in each child MZI (see FIG. 4B). The bias electrode Bias 90° provided in each child MZI constitute the entirety of a relative phase adjusting section. The optical signals are subjected to a phase change after the output from the child MZI (see FIG. 1A), because such relative phase adjusting section can subject the optical signals of the upper and lower arms of the child MZI to a shift change in the same direction, respectively.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: February 24, 2015
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takashi Goh, Yoshiyuki Doi, Shinji Mino, Ken Tsuzuki, Hiroshi Yamazaki, Takashi Yamada
  • Patent number: 8948555
    Abstract: Embodiments of the invention describe a skew directional coupler for a plurality of waveguides. Said coupler includes a first waveguide on a first plane and a second waveguide on a second plane separate from the first plane. In embodiments of the invention, the first waveguide is disposed on top of the second waveguide to form an overlapping region of a segment of the first waveguide and a segment of the second waveguide, wherein an optical axis of the segment of the first waveguide is horizontally skew to an optical axis of the segment of the second waveguide, and wherein light is to be passively transmitted between the first and second waveguide segments via mode hybridization.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: February 3, 2015
    Assignee: Aurrion, Inc.
    Inventors: Jonathan Edgar Roth, Brian Koch, Gregory Alan Fish
  • Patent number: 8948554
    Abstract: A slot-line waveguide optical switch system and method are disclosed. An optical switch system can include a slot-line waveguide optical switch that includes a plurality of wall portions that are each formed from a high refractive-index material and that are arranged to form a channel portion comprising an electro-optic material interposed to extend between the plurality of wall portions. The channel portion can include an input channel to receive an input optical signal and plural output channels to receive the input optical signal from the input channel. A channel switching system can provide a voltage to an electrode coupled to a corresponding wall portion to change a relative refractive index in the output channels via the electro-optic material and thereby switch the input optical signal to one of the output channels.
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: February 3, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Lars Helge Thylen, Michael Renne Ty Tan, Alexandre M Bratkovski, Shih-Yuan Wang, Wayne V. Sorin, Michael Josef Stuke
  • Patent number: 8923673
    Abstract: An optical modulator is provided which can compensate for a bias shift between an output light and a monitoring light of the optical modulator and which has a configuration capable of being reduced in size with a simple structure. The optical modulator comprises a substrate that has an electro-optical effect, an optical waveguide that includes a Mach-Zehnder type optical waveguide formed in the substrate, a modulation electrode that modulates light waves propagating in the optical waveguide, an optical fiber that guides an output light from the optical waveguide, light collecting means for collecting two radiated lights from the Mach-Zehnder type optical waveguide toward a single optical receiving element, and light intensity ratio adjusting means for adjusting a light intensity ratio of the two radiated lights received by the optical receiving element.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: December 30, 2014
    Assignee: Sumitomo Osaka Cement Co., Ltd.
    Inventors: Kei Katou, Shinsuke Kanno, Ryo Shimizu, Norikazu Miyazaki, Hideki Ichimei
  • Patent number: 8923660
    Abstract: In one embodiment, an optical phase shifter includes a first phase-shifter configured to phase shift a transverse electric (TE) component of an optical signal by a first phase-shift to produce a TE component of a first signal, and a transverse magnetic (TM) component of the optical signal by a second phase-shift to produce a TM component of the first signal. The optical phase-shifter includes a polarization-rotator configured to rotate the TE component of the first signal to produce a TM component of a rotated signal, and the TM component of the first signal to produce a TE component of the rotated signal. The optical phase-shifter includes a second phase-shifter configured to phase-shift a TE component of the rotated signal by a third phase-shift, and the TM component of the rotated signal by a fourth phase-shift, where the first phase-shifter, the polarization-rotator, and the second phase-shifter are integrated on a substrate.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: December 30, 2014
    Assignee: FutureWei Technologies, Inc.
    Inventors: Bryce Dorin, Winnie N. Ye
  • Patent number: 8903202
    Abstract: A Mach-Zehnder optical modulator with a travelling wave electrode having one or more signal transmission line conductors and one or more ground transmission line conductors is provided. The modulator includes a ground strip conductor extending substantially in parallel to the ground transmission line conductors, and a distributed bridging structure electrically connecting the ground strip conductor and at least one of the ground transmission line conductors along a substantial portion of a length thereof. The distributed bridging structure may be embodied by a plurality of electrical connections at disposed regularly spaced intervals.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: December 2, 2014
    Assignee: Teraxion Inc.
    Inventors: Kelvin Prosyk, Ian Nicholas Woods
  • Patent number: 8901590
    Abstract: Phototherapy devices for phototherapy treatment of a patient include a light emitter for emitting light received from a light source. Means may be provided for altering the amount of power to the light source in response to a change in light output to maintain a substantially constant light output. The light source may comprise one or more LEDs that generate a blue light output and at least one other LED that generates a different color light output.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: December 2, 2014
    Assignee: Lumitex, Inc.
    Inventor: Jeffrey B. Williams
  • Publication number: 20140348465
    Abstract: Methods and apparatus for optical architectures are disclosed. An optical architecture includes first and second riser cards and first and second components carried by the first and second riser cards respectively. The optical architecture also includes a first matrix to fan-out a multi-bit optical input signal into first and second outbound signals, and first and second fiber optic cables to carry the first and second outbound signals to the first and second riser cards, respectively.
    Type: Application
    Filed: January 31, 2012
    Publication date: November 27, 2014
    Inventors: Terrel L. Morris, Michael Renne Ty Tan
  • Patent number: 8861908
    Abstract: This document discusses, among other things, a connector for an optical imaging probe that includes one or more optical fibers communicating light along the catheter. The device may use multiple sections for simpler manufacturing and ease of assembly during a medical procedure. Light energy to and from a distal minimally-invasive portion of the probe is coupled by the connector to external diagnostic or analytical instrumentation through an external instrumentation lead. Certain examples provide a self-aligning two-section optical catheter with beveled ends, which is formed by separating an optical cable assembly. Techniques for improving light coupling include using a lens between instrumentation lead and probe portions. Techniques for improving the mechanical alignment of a multi-optical fiber catheter include using a stop or a guide.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: October 14, 2014
    Assignee: Vascular Imaging Corporation
    Inventors: Michael J. Eberle, Kenneth N. Bates, William W. Morey
  • Patent number: 8861902
    Abstract: A planar waveguide circuit comprises a first optical splitter to receive an input optical signal, a second optical splitter to receive a reference optical signal, a first optical signal combiner, and a second optical signal combiner. First and second optical waveguides are provided to couple first and second outputs of the first optical splitter to respective inputs of the first and second optical signal combiners. Third and fourth optical waveguides are provided to couple first and second outputs of the second optical splitter to respective inputs of the first and second optical signal combiners. A phase-shifter is provided located to affect the phase of an optical signal propagating in one of the third and fourth optical waveguides. The first and second optical splitters and the first and second optical signal combiners are arranged such that the first, second, third and fourth optical waveguides do not intersect one another.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: October 14, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Francesca Bontempi, Luca Poti, Antonella Bogoni
  • Patent number: 8858096
    Abstract: A side pump fiber and a method of making a side pump fiber are provided. A plurality of pump fibers can be joined to a side of a signal fiber, at different locations. The method includes creating a lengthwise, tapered, concave pocket cut in a pump (or side pump) fiber, inserting the signal fiber in the pocket cut, and then coupling the side pump fiber to the center fiber at the pocket cut. Optical amplifiers and lasers, as examples, can be made using the above method and side pump fibers.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: October 14, 2014
    Assignee: 3SAE Technologies, Inc.
    Inventor: Robert G. Wiley
  • Patent number: 8842943
    Abstract: An electro-optic modulator includes a substrate comprising a surface, a pair of transmission lines formed in the surface and extending substantially in parallel with each other, a pair of first strip electrodes formed on the surface and covering the respective transmission lines, and a pair of second strip electrodes positioned at two sides of the first strip electrodes and parallel with the first strip electrodes.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: September 23, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Hsin-Shun Huang
  • Patent number: 8837885
    Abstract: The inventive concept provides optic couplers, optical fiber laser devices, and active optical modules using the same. The optic coupler may include a first optical fiber having a first core and a first cladding surrounding the first core, a second optical fiber having a second core transmitting a signal light to the first optical fiber and a third cladding surrounding the second core, third optical fibers transmitting pump-light to the first optical fiber in a direction parallel to the second optical fiber; and a connector connected between the first optical fiber and the second optical fiber, the connector extending the third optical fibers disposed around the second optical fiber toward the first optical fiber, the connector comprising a third core connected between the first core and the second core and a fifth cladding surrounding the third core.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: September 16, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hong Seok Seo, Bong Je Park, Joon Tae Ahn, Jung-Ho Song
  • Patent number: 8824836
    Abstract: An optical waveguide formed in a substrate including: a curved waveguide; and a splitter that is coupled to the curved waveguide and branches, wherein a low refraction index portion having an effective refraction index that is lower than that of a start point of the curved waveguide on an opposite side of the splitter is provided in a waveguide extending from the start point of the curved waveguide to the splitter.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: September 2, 2014
    Assignee: Fujitsu Optical Components Limited
    Inventor: Masaki Sugiyama
  • Patent number: 8805139
    Abstract: An optical waveguide directional coupler includes a base and a Y-shaped optical waveguide formed in the base. The base includes a planar member and a ridge member extending from a side of the planar member. The planar member includes a top surface. The ridge member includes a recessed planar portion and a raised portion raised relative to the recessed planar portion and perpendicularly extending from the planar member. The raised portion has an upper surface coplanar with the top surface. The Y-shaped optical waveguide is exposed to the upper surface and the top surface. One end of the Y-shaped optical waveguide is exposed to an end of the ridge member, and the other two ends are exposed to an end of the planar member.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: August 12, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Hsin-Shun Huang
  • Patent number: 8787766
    Abstract: A chip scale fiber-optic device that includes a transducer that sends and receives information signals, a submount that holds the transducer in a substantially fixed position, and a multimode fiber lens that conveys the information signals between the transducer and an optical fiber.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: July 22, 2014
    Assignee: Teledyne Technologies Incorporated
    Inventors: Golden G. Shu, Ronald Hays
  • Publication number: 20140178005
    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: Application
    Filed: November 29, 2013
    Publication date: June 26, 2014
    Inventors: Yi Zhang, Shuyu Yang, Tom Baehr-Jones
  • Publication number: 20140178000
    Abstract: The present invention generally relates to optical circuits for mitigating power loss in medical imaging systems and methods for using such circuits. Circuits of the invention can involve a first optical path, a second optical path, and a means for recombining an optical signal transmitted through the first and second optical paths by sequentially gating the first and second optical paths to a single output.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 26, 2014
    Applicant: VOLCANO CORPORATION
    Inventor: Nathaniel J. Kemp
  • Patent number: 8749875
    Abstract: A non-linear optical device includes a frequency-conversion waveguide and first and second input waveguides. The longitudinal axes of the input waveguides are inclined to that of the frequency-conversion waveguide such a first transverse mode is excited in the latter at the input frequency in operation of the device. The frequency-conversion waveguide supports a second transverse mode at an output frequency of the device, such that the phase velocity of the second transverse mode at the output frequency is substantially equal to that of the first transverse mode at the input frequency, thus providing phase-matching by balancing the effects of chromatic and modal dispersion.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: June 10, 2014
    Assignee: Qinetiq Limited
    Inventors: David M. Benton, Philip M. Gorman, Paul R. Tapster, David Maurice Taylor, Ewan D. Finlayson
  • Patent number: 8743454
    Abstract: An optical amplifier includes at least one pump source and an optical fiber cable which includes an amplifying optical fiber and a pump optical fiber that are defined by respective lengths. The amplifying optical fiber and the pump optical fiber are coated with a common coating along a portion of their respective lengths, and the fibers are in optical contact with each other along a coating length within the common coating. The common coating has a refractive index which is lower than a refractive index of a cladding material of the pump optical fiber. The fibers are made substantially from glass. The amplifying optical fiber includes a core and a cladding, and is doped with a rare earth dopant. The pump optical fiber is defined by a first end and a second end, the first end of the pump optical fiber being connected to the pump source.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: June 3, 2014
    Assignee: SPI Lasers UK Ltd
    Inventors: Anatoly Borisovich Grudinin, Dave Neil Payne, Paul William Turner, Lars Johan Albinsson Nilsson, Michael Nickolaos Zervas, Morten Ibsen, Michael Kevan Durkin
  • Patent number: 8737783
    Abstract: A light guiding plate may include a substrate, a waveguide, and a reflective metal. The waveguide and the reflective metal may be formed on the substrate. The waveguide may guide light. The reflective metal may reflect the light guided along the waveguide to change a propagation direction of the light. A light guiding plate may include a substrate, a cladding layer, and a plurality of waveguides. The cladding layer may be formed on the substrate. The cladding layer may include a first insulating layer having a first refractive index. The plurality of waveguides may be formed on the cladding layer. The plurality of waveguides may include a second insulating layer having a second refractive index. The second refractive index may be higher than the first refractive index. The plurality of waveguides may guide light provided by a light emitting element. At least two of the waveguides may have different lengths.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: May 27, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yu-Sik Kim
  • Patent number: 8718423
    Abstract: An optical branching element includes: an input waveguide; a tapered waveguide connected to the input waveguide; two branched waveguides that are connected to the tapered waveguide and arranged so as to form a Y-shape with the input waveguide and the tapered waveguide; and a plurality of strip-like waveguides that are provided so as to connect between the two branched waveguides and not to protrude outside the two branched waveguides, and formed so as to decrease in width as becoming distant from the tapered waveguide.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: May 6, 2014
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Kazutaka Nara, Noritaka Matsubara
  • Patent number: 8695214
    Abstract: A network and method of laying network cables in water supply pipes is disclosed. A building is situated near a roadway along which is laid a trunk cable. A water supply pipe branches off the water main to enter the building. A water supply pipe is provided at the time of construction of the building and is an underground pipe. It is conventional to provide a dedicated (and usually underground) conduit for a branch cable, which is expensive and disruptive. In the present invention the branch cable is laid along water supply pipe, enabling the cable to cross between the trunk cable and the building with minimal disturbance of the ground therebetween. This is achieved by introducing cable to pipe by use of a suitable Y-junction at location and removing the cable from the pipe by use of a second such Y-junction at location.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: April 15, 2014
    Assignee: CMS (Cable Management Supplies) PLC. a Company of the United Kingdom
    Inventor: Elfed Thomas
  • Publication number: 20140086522
    Abstract: An optical waveguide splitter with a symmetric splitting power ratio having one input port and two output ports, includes a substrate and one or more vertical waveguide layers deposited thereon or diffused thereinto, and optionally one or more cladding layers deposited upon the waveguide layer(s). The waveguide layers and optionally one or more cladding layer together and optionally with the substrate form a profile of the refractive index that supports the propagation of light in a plane substantially parallel to the substrate. On both sides of the input port, the waveguide sidewalls terminate at a depth deeper than the location of the peak intensity of the beam transporting propagating light energy within the input port, and the sidewalls on both sides of each output port terminate at a depth shallower than the location of the peak intensity of the beam transporting the majority light energy within each output port.
    Type: Application
    Filed: September 24, 2012
    Publication date: March 27, 2014
    Applicant: FINISAR SWEDEN AB
    Inventor: Dave ADAMS
  • Patent number: 8682161
    Abstract: An optical data transmission system for transmitting optical data in a flight vehicle, including a head end, optical splitter, N units of terminals that process optical data received from the optical splitter to display such as video, plural optical cables connected between the head end and the optical splitter and between the optical splitter and the terminals, and a seat group including N sets of passenger seats that transmit two-way optical data and are placed close to one another. The N units of terminals are placed in association with the respective N sets of seats. The optical splitter is placed in association with the seat group; sends optical data from the head end to the N units of terminals; and reversely unifies N-series optical data, different from one another, from the N units of terminals into one series and sends it to the head end.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: March 25, 2014
    Assignee: Panasonic Corporation
    Inventors: Masaaki Higashida, Satoshi Ohyama
  • Patent number: 8644658
    Abstract: A light transmission system includes a light guide support, a first convex lens, an optical waveguide member, and two second convex lenses. The light guide support includes a first surface, a second surface, a hollow space formed between the first surface and the second surface, and an inner reflecting surface forming an angle of 45 degrees relative to the first surface. The first convex lens is formed at the first surface, and configured for converging light to the inner reflecting surface. The optical waveguide member is located at the hollow space, and includes a main section parallel with the first surface, two first branch sections extending from and forming equal angles relative to the main section, and two second branch sections extending from the respective first branch sections. The two second convex lenses are formed at the second surface and aligned with the respective second branch sections.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: February 4, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Kai-Wen Wu
  • Patent number: 8620115
    Abstract: A semiconductor-based optical modulator is presented that includes a separate phase control section to adjust the amount of chirp present in the modulated output signal. At least one section is added to the modulator configuration and driven to create a pure “phase” signal that will is added to the output signal and modify the ei? term inherent in the modulation function. The phase modulation control section may be located within the modulator itself, or may be disposed “outside” of the modulator on either the input waveguiding section or the output waveguiding section. The phase control section may be formed to comprise multiple segments (of different lengths), with the overall phase added to the propagating signal controlled by selecting the different segments to be energized to impart a phase delay to a signal propagating through the energized section(s).
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: December 31, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Mark Webster, Kalpendu Shastri
  • Patent number: 8605286
    Abstract: A biaxial optical gyroscope is provided, which realizes mode separation using the waveguide devices with different material, and the biaxial optical gyroscope includes: a surface Plasmon Polariton Y-type mode splitter (1), a Y waveguide integrated optical device (2), a Y waveguide integrated optical chip (3), a first polarization-maintaining fiber coil (41), a second polarization-maintaining fiber coil (42), directional couplers (51, 52) and detectors (61, 62), wherein the two output ends of the surface Plasmon Polariton Y-type mode splitter (1) are respectively connected to the Y waveguide integrated optical device (2) and the Y waveguide integrated optical chip (3), and the output ends of the Y waveguide integrated optical device (2) and the Y waveguide integrated optical chip (3) are respectively connected to the first polarization-maintaining fiber coil (41) and the second polarization-maintaining fiber coil (42).
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: December 10, 2013
    Assignee: Southeast University
    Inventors: Tong Zhang, Xiaojun Xue, Xiaoyang Zhang, Pengqin Wu, Qiuyue Chen
  • Patent number: 8600199
    Abstract: An optical modulator includes a modulator that modulates an input light of light by using an input signal. The optical modulator further includes a compensation circuit that compensates the phase of a signal light in accordance with an input current, the signal light being the input light modulated by the modulator. The optical modulator further includes a detector that detects the difference between the phase of the signal light compensated by the compensation circuit and the phase of an input signal that is input to the modulator. The optical modulator further includes an adjustment circuit that adjusts, in accordance with the phase difference detected by the detector, the input current that is input to the compensation circuit.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: December 3, 2013
    Assignee: Fujitsu Optical Components Limited
    Inventor: Tsuyoshi Morishita
  • Patent number: 8588560
    Abstract: An optical 90-degree hybrid circuit includes a first demultiplexing optical coupler having two or more first input ports and two or more first output ports, a second demultiplexing optical coupler having two or more second input ports and two or more second output ports, two first arm waveguides connected to the first output ports, two second arm waveguides connected to the second output ports, a 90-degree phase shift section installed in one of the four arm waveguides, a first optical coupler and a second optical coupler connected to the first arm waveguides and the second arm waveguides, a first optical waveguide for connecting an optical splitter and the first input ports, and a second optical waveguide for connecting the optical splitter and the second input ports, wherein an optical length of the first optical waveguide is different from that of the second optical waveguide.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: November 19, 2013
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yohei Sakamaki, Takashi Goh, Toshikazu Hashimoto, Yusuke Nasu, Kuninori Hattori, Hiroshi Takahashi
  • Publication number: 20130243362
    Abstract: A reflective structure includes an input/output port and an optical splitter coupled to the input/output port. The optical splitter has a first branch and a second branch. The reflective structure also includes a first resonant cavity optically coupled to the first branch of the optical splitter. The first resonant cavity comprises a first set of reflectors and a first waveguide region disposed between the first set of reflectors. The reflective structures further includes a second resonant cavity optically coupled to the second branch of the optical splitter. The second resonant cavity comprises a second set of reflectors and a second waveguide region disposed between the second set of reflectors.
    Type: Application
    Filed: September 10, 2012
    Publication date: September 19, 2013
    Applicant: Skorpios Technologies, Inc.
    Inventors: Derek Van Orden, Amit Mizrahi, Timothy Creazzo, Stephen B. Krasulick
  • Patent number: 8532451
    Abstract: An optical transmitter includes three or more emission optical fibers that are three-dimensionally arranged, a single reception optical fiber, and an optical path converting component to optically couple the emission optical fibers to the reception optical fiber. The optical path converting component includes optical transmission portions that are optically coupled to the three or more emission optical fibers one to one, respectively, and optically coupled commonly to the single reception optical fiber. Entry ends of the optical transmission portions are aligned with exit ends of the three or more emission optical fibers, respectively. Exit ends of the optical transmission portions are aligned, as a whole, with an entry end of the single reception optical fiber. The exit ends of the optical transmission portions are arranged substantially parallel to one another and in closer proximity to one another than the entry ends of the optical transmission portions.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: September 10, 2013
    Assignee: Olympus Corporation
    Inventor: Tomoyuki Hatakeyama