Patents Examined by Akm Enayet Ullah
  • Aligning and directly optically coupling photodetectors to optical demultiplexer outputs in a multichannel receiver optical subassembly
    Patent number: 9509433
    Abstract: A multi-channel receiver optical subassembly (ROSA) such as an arrayed waveguide grating (AWG), with outputs directly optically coupled to respective photodetectors such as photodiodes. In one embodiment, an AWG may be configured such that optical components of the AWG do not interfere with direct optical coupling, and the wire bonding points on the photodiodes may also be configured such that wire bonding does not interfere with direct optical coupling. The photodetectors may also be mounted on a photodetector mounting bar with a pitch sufficiently spaced to allow connection to floating grounds. A passive alignment technique may be used to determine the mounting locations on the photodetector mounting bar such that the photodetectors are aligned with the optical outputs.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: November 29, 2016
    Assignee: Applied Optoelectronics, Inc.
    Inventors: I-Lung Ho, Luohan Peng, Joyce Li
  • Optical module
    Patent number: 9500819
    Abstract: An optical module includes: a light emitting element; an optical waveguide configured to guide light emitted from the light emitting element; and an optical fiber configured to be optically coupled to the optical waveguide, wherein, when an aperture angle of light incident into a core of the optical waveguide is NA1, a core diameter of the optical waveguide is w1, a core diameter of the optical fiber is w2, and a ratio of w1 to w2 is R, an optical system performance index a represented by a=NA1×(w1/w2)=NA1×R meets a condition of a<0.15, and the range of the ratio R meets a condition of 4.38a2+1.63a+0.16<R<?13.09a2?1.04a+0.95.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: November 22, 2016
    Assignee: FUJITSU LIMITED
    Inventor: Takashi Shiraishi
  • Optical waveguide to be carried by a semiconductor material including a plurality of parallel strips of alternating conductivity types and related methods
    Patent number: 9500805
    Abstract: An optical waveguide in a semiconductor material, may include, between two adjacent portions of the waveguide, a plurality of parallel strips of alternating conductivity types forming a plurality of opposing bipolar junctions between the two adjacent portions.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: November 22, 2016
    Assignees: STMICROELECTRONICS SA, STMICROELECTRONICS (CROLLES 2) SAS
    Inventors: Jean-Robert Manouvrier, Patrick Lemaitre, Jean-Francois Carpentier
  • Stabilization of an injection locked harmonically mode-locked laser via polarization spectroscopy for frequency comb generation
    Patent number: 9502856
    Abstract: Stabilization of an injection locked optical frequency comb is achieved through polarization spectroscopy of an active laser cavity, eliminating optical PM sidebands inherent in previous stabilization methods. Optical SNR of 35 dB is achieved. A monolithic AlInGaAs quantum well Fabry-Prot laser injection locked to a passively mode-locked monolithic laser is presented here. The FP laser cavity can be used as a true linear interferometric intensity modulator for pulsed light.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: November 22, 2016
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Peter J. Delfyett, Charles Williams, Edris Sarailou
  • Optical architecture with riser cards a matrix and optic cables to carry outbound signals of the matrix to the riser cards
    Patent number: 9494740
    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: Grant
    Filed: January 31, 2012
    Date of Patent: November 15, 2016
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Terrel L. Morris, Michael Renne Ty Tan
  • Optically coupling waveguides
    Patent number: 9482818
    Abstract: Embodiments disclosed herein generally relate to an optical device for transferring light between a first and second waveguide. The optical device may generally include the first waveguide, a first support member and a base on which the first waveguide and first support member are disposed. The optical device may further include a second support member wherein the first support member is disposed between the second support member and the base. The second support member comprises at least one groove. The second waveguide may be disposed at least partially in the groove such that the second waveguide is between the first and second support members. The optical device may further include at least one lens disposed between the first waveguide and the second waveguide to transfer an optical signal between the first and second waveguides through the lens.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: November 1, 2016
    Assignee: Cisco Technology, Inc.
    Inventors: Ravinder Kachru, Pang-Chen Sun, Chris Kiyoshi Togami
  • Composite electro/optical microcable
    Patent number: 9482836
    Abstract: In one aspect of the invention, the composite electro/optical microcable includes an outer sheath, and a composite electro/optical core covered by the outer sheath. The composite electro/optical core includes a strand of an insulated conductive wire set and an optical fiber unit, and a wrapping layer wrapping the strand of the insulated conductive wire set and the optical fiber unit. The insulated conductive wire set comprises one or more insulated conductive wires, each insulated conductive wire comprising one or more metal wires and an insulating layer covering the one or more metal wires. The optical fiber unit includes one or more optical fibers, one or more tight-buffered optical fiber cables, or one or more optical fiber ribbons.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: November 1, 2016
    Assignee: EVERPRO TECHNOLOGIES COMPANY LTD.
    Inventors: Yunfang Ruan, Mingang Li, Xiaofan Su, Feng Chen, Zhuang Xiong
  • Method and arrangement for generating a laser beam having a differing beam profile characteristic by a multi-clad fiber
    Patent number: 9482821
    Abstract: The invention concerns a method for generating a laser beam (3) with different beam profile characteristics, whereby a laser beam (2) is coupled into one fiber end (1a) of a multi-clad fiber (1), in particular a double-clad fiber, and emitted from the other fiber end (1b) of the multi-clad fiber (1) and whereby, to generate different beam profile characteristics of the output laser beam (3), the input laser beam (2) is electively coupled either at least into the inner fiber core (4) of the multi-clad fiber (1) or at least into at least one outer ring core (6) of the multi-clad fiber (1), as well as a corresponding arrangement (10).
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: November 1, 2016
    Assignee: TRUMPF Laser- und Systemtechnik GmbH
    Inventors: Rudolf Huber, Wolfgang Andreasch
  • Housing case for optical fiber
    Patent number: 9477058
    Abstract: Technical Problem In the case where an optical fiber is wound around several times and housed, it is difficult to take out a terminal end of the optical fiber at a side wound around before. Solution to Problem A housing case includes: a body; and bobbin around which an optical fiber is to be wound, the bobbin being housed rotatably in the body, bobbin having a partition portion, partition portion having a fiber groove that guides the optical fiber between an inside and an outside of the partition portion, and the optical fiber being housed by housing a one end side of the optical fiber in the inside of the partition portion and by winding around an outer wall surface of the partition portion the optical fiber that has been guided to the outside of the partition portion with the fiber groove.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: October 25, 2016
    Assignee: FUJIKURA, LTD.
    Inventors: Yuu Takahashi, Susumu Okabe, Sawako Yamai
  • Sub-volt drive 100 GHz bandwidth electro-optic modulator
    Patent number: 9470952
    Abstract: Electro-optical modulators and methods of fabrication are disclosed. An electro-optical modulator includes a Mach-Zehnder interferometer formed in a substrate removed semiconductor layer and a coplanar waveguide. Signals from the coplanar waveguide are capacitively coupled to the Mach-Zehnder interferometer through first and second dielectric layers having strong dielectric constant dispersion.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: October 18, 2016
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventor: Nadir Dagli
  • Integrated lens-array-on-substrate for optical coupling system and fabrication method thereof
    Patent number: 9465175
    Abstract: An integrated optical coupling device may include a substrate, a coating layer disposed on the substrate, and a prism disposed on the coating layer. The prism may include a first surface and a second surface. The integrated optical coupling device may also include a first lens disposed on the first surface of the prism, a second lens disposed on the second surface of the prism, and an anti-reflection coating layer disposed on the first lens and the second lens.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: October 11, 2016
    Assignee: SIFOTONICS TECHNOLOGIES CO., LTD.
    Inventors: Tuo Shi, Shipeng Yan, Nai Zhang, Dong Pan
  • Fiber optic connector assembly jig
    Patent number: 9465174
    Abstract: A fiber optic connector assembly jig may comprise a base configured to carry a set of fiber optic connectors. A set of alignment elements may be carried by the base, where each alignment element of the set of alignment elements may define an opening, where each opening may be configured to center a corresponding fiber optic connector of the set of fiber optic connectors with a longitudinal axis of the opening.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: October 11, 2016
    Assignee: Fishman Corporation
    Inventor: W. Scott Beebe
  • Photosensitive epoxy resin composition, curable film for formation of optical waveguide core layer, and optical waveguide and optical/electrical transmission hybrid flexible printed wiring board produced by using the photosensitive epoxy resin composition or the curable film
    Patent number: 9459530
    Abstract: The present invention provides a photosensitive epoxy resin composition which contains: (A) a cresol novolak polyfunctional epoxy resin; (B) a liquid epoxy resin having a fluorene skeleton in its main chain; and (C) a photoacid generator; wherein the components (A) and (B) are present in a mixing weight ratio of (A)/(B)=40/60 to 60/40. Where the inventive photosensitive epoxy resin composition is used as an optical waveguide forming material, particularly as an optical waveguide core layer forming material for formation of a core layer, the optical waveguide core layer can be formed as having excellent reflow resistance and a lower loss through a coating process and a roll-to-roll process without altering the conventional production process.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: October 4, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Tomoyuki Hirayama, Naoyuki Tanaka
  • Optical fiber connector
    Patent number: 9448368
    Abstract: The present disclosure relates to an optical fiber connector for holding an optical fiber. The optical fiber connector includes a core and a cladding layer surrounding the core. The optical fiber connector includes an optical fiber holding apparatus, a ferrule unit, and a housing connecting to the optical fiber holding apparatus and the ferrule unit. The optical fiber holding apparatus includes a holding member with a first holding portion and a second holding portion. One of the first holding portion and the second holding portion includes at least one positioning pillar, and the other holding portion defines at least one positioning hole corresponding to the positioning pillar. The positioning pillar is configured to wind the clad strips locking the first holding portion and the second holding portion cooperatively to the optical fiber, and the positioning pillar is engaged with the positioning hole.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: September 20, 2016
    Assignees: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Le-Peng Wei, Zhi-Ming Li
  • Low profile fiber-to-module interface with relaxed alignment tolerances
    Patent number: 9442255
    Abstract: Systems and methods are described for creating a very cost effective optical/electrical interface connecting system with high tolerance to misalignment. Low cost sealed optical devices can be fabricated with easily detachable top cable assemblies. This approach can be used for hermetically sealed optical devices without the need for hermetic fiber feed-through. The system also has features that enable fiber optic components to operate and survive in harsh environments, particularly in large temperature extremes.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: September 13, 2016
    Assignee: ULTRA COMMUNICATIONS, INC.
    Inventors: Richard J. Pommer, George F. Ahadian, Charles B. Kuznia, Richard T. Hagan
  • Indicating communications components via illumination
    Patent number: 9435969
    Abstract: A connector plug arrangement (330, 600, 700) includes a connector body (334, 610, 720); and an indication component (335, 650, 750). The indication component (335, 650, 750) includes a first portion (337, 653, 751) that is disposed at a rear end of the connector body and a second portion (339, 654, 753) that extends outwardly from the first portion (337, 653, 751). The first portion (337, 653, 751) is configured to extend along a circumferential perimeter of the connector body (334, 610, 720). The second portion (339, 654, 753) is configured to extend along the longitudinal axis of the connector body (334, 610, 720).
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: September 6, 2016
    Assignee: CommScope Connectivity UK Limited
    Inventors: Stephen Lambourn, Ai Ling Xu, Alan Cook, Ian Miles Standish
  • Integration of optical components in integrated circuits by separating two substrates with an insulation layer
    Patent number: 9435947
    Abstract: Methodologies enabling integration of optical components in ICs and a resulting device are disclosed. Embodiments include: providing a first substrate layer of an IC separated from a second substrate level by an insulator layer; providing a transistor on the second substrate layer; and providing an optical component on the first substrate layer, the optical component being connected to the transistor.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: September 6, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventor: Errol T. Ryan
  • Systems and methods for laser systems with variable beam parameter product
    Patent number: 9435964
    Abstract: In various embodiments, a beam-parameter adjustment system and focusing system alters a spatial power distribution of a radiation beams before the beam is coupled into an optical fiber or delivered to a workpiece.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: September 6, 2016
    Assignee: TeraDiode, Inc.
    Inventors: Parviz Tayebati, Wang-Long Zhou, Bien Chann, Bryan Lochman
  • Ferrule and ferrule with optical fiber
    Patent number: 9429717
    Abstract: A ferrule of the present invention includes a positioning mechanism for positioning an optical fiber, and a recess having at least a first inner wall for allowing a front end of the optical fiber portion positioned by the positioning mechanism to protrude, and a second inner wall opposite to the first inner wall. A distance between the first inner wall and the second inner wall is less than or equal to four times the outer diameter of the optical fiber. Adhesive is filled into the recess and cured in a state in which the optical fiber protrudes from the first inner wall and substantially contacts the second inner wall to fix the optical fiber.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: August 30, 2016
    Assignee: FUJIKURA LTD.
    Inventors: Akihiro Nakama, Tatsuya Ohta, Akito Nishimura, Terutake Kobayashi, Kunihiko Fujiwara
  • Optical reflector based on a directional coupler and a coupled optical loop
    Patent number: 9429812
    Abstract: An optical device includes an optical reflector based on a coupled-loopback optical waveguide. In particular, an input port, an output port and an optical loop in arms of the optical reflector are optically coupled to a directional coupler. The directional coupler evanescently couples an optical signal between the arms. For example, the directional coupler may include: a multimode interference coupler and/or a Mach-Zehnder Interferometer (MZI). Moreover, destructive interference during the evanescent coupling determines the reflection and transmission power coefficients of the optical reflector.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: August 30, 2016
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Guoliang Li, Xuezhe Zheng, Ying L. Luo, Ashok V. Krishnamoorthy