Patents Examined by Charlie Peng
  • Patent number: 9547187
    Abstract: An electro-optic device, comprising an insulating layer and a layer light-carrying material adjacent the insulating layer. The layer of light-carrying material, such as silicon, comprises a first doped region of a first type and a second doped region of a second, different type abutting the first doped region to form a pn junction. The first doped region has a first thickness at the junction, and the second doped region has a second thickness at the junction, the first thickness being greater than the second thickness, defining a waveguide rib in the first doped region for propagating optical signals. Since the position of the junction coincides with the sidewall of the waveguide rib a self-aligned process can be used in order to simplify the fabrication process and increase yield.
    Type: Grant
    Filed: January 2, 2015
    Date of Patent: January 17, 2017
    Assignee: University of Southampton
    Inventors: David Thomson, Frederic Gardes, Graham Reed
  • Patent number: 9343638
    Abstract: An electro-optic device, comprising a layer of light-carrying material; and a rib, projecting from the layer of light-carrying material, for guiding optical signals propagating through the device. The layer of light-carrying material comprises a first doped region of a first type extending into the rib, and a second doped region of a second, different type extending into the rib such that a pn junction is formed within the rib. The pn junction extends substantially parallel to at least two contiguous faces of the rib, resulting in a more efficient device. In addition, a self-aligned fabrication process can be used in order to simplify the fabrication process and increase reliability and yield.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: May 17, 2016
    Assignee: University of Southampton
    Inventors: Frederic Gardes, David Thomson, Graham Reed
  • Patent number: 8971679
    Abstract: An apparatus for passive alignment of optical devices comprises a substrate including a trench in a top surface thereof, where the trench has a first end positioned at an edge of the substrate and a second end positioned at an interior region of the substrate, and a lens disposed on the top surface of the substrate adjacent to the second end of the trench. The apparatus further includes a top holder having a longitudinal indentation in a bottom surface thereof for mounting an optical fiber. The longitudinal indentation is sized to fit a top portion of the optical fiber such that a bottom portion of the optical fiber extends below the bottom surface of the top holder when the optical fiber is mounted therein. One or both of the substrate and the top holder include one or more spacer features configured for three-dimensional (3D) alignment of the lens with the optical fiber when the top holder is brought into contact with the substrate.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: March 3, 2015
    Assignee: Optonet Inc.
    Inventors: Seng-Tiong Ho, Yingyan Huang
  • Patent number: 8961043
    Abstract: A light emitting device package including light emitting devices, and optical lenses respectively disposed over the light emitting devices. Further, a respective optical lens includes an extending member extending from a body of the respective optical lens, and including a first portion laterally extending in a first direction substantially perpendicular to the central axis of the respective light emitting device, and a second portion extending towards the substrate in a second direction substantially parallel with the central axis of the respective light emitting device. A vertical cross section of the second portion is substantially symmetrical with respect to an axis that is spaced apart in the first direction from and substantially parallel with the central axis of the respective light emitting device.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: February 24, 2015
    Assignees: LG Electronics Inc., LG Innotek Co., Ltd.
    Inventors: Jung Hoon Seo, Jun Ho Jang
  • Patent number: 8961041
    Abstract: A connector assembly (100) includes an insulative housing having a base portion and a tongue portion extending forwardly from the base portion, the tongue portion having a top surface and a bottom surface, with a mounting cavity recessed downwardly from the top surface of the tongue portion; an optical module (5) accommodated in the mounting cavity and capable of moving therein along a front-to-back direction; and at least two magnetic elements (91, 92) disposed along the front-to-back direction and arranged in same polarities facing to each other, one of the magnetic elements (92) mounted to the optical module, and the other of the magnetic elements (91) assembled to the insulative housing.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: February 24, 2015
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Ping-Sheng Su, Jun Chen, Qing Wang
  • Patent number: 8965147
    Abstract: An optical fiber includes: a core including a photosensitive material disposed therein, the core having a first index of refraction; a depressed cladding surrounding the core and having a second index of refraction that is lower than the first index of refraction; and an outer cladding surrounding the depressed cladding and having a third index of refraction that is higher than the depressed cladding.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: February 24, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Daniel Homa, Brooks Childers
  • Patent number: 8965158
    Abstract: A crush-resistant fiber optic cable is disclosed, wherein the cable includes a plurality of optical fibers. The fibers are generally arranged longitudinally about a central axis, with no strength member arranged along the central axis. A tensile-strength layer surrounds the plurality of optical fibers. A protective cover surrounds the tensile-strength layer and has an outside diameter DO in the range 3 mm?DO?5 mm.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: February 24, 2015
    Assignee: Corning Cable Systems LLC
    Inventor: James Arthur Register, III
  • Patent number: 8965165
    Abstract: A multicore fiber includes a cladding and a plurality of core elements which is provided in the cladding and includes a core, an inner cladding layer that surrounds the core, and a low-refractive index layer that surrounds the inner cladding layer and has a lower average refractive index than the cladding and the inner cladding layer. The plurality of core elements is arranged such that a specific core element is surrounded by three or more core elements, and a low-refractive index layer of a partial core element of the plurality of core elements is configured to have larger light confinement loss in the core than low-refractive index layers of the other partial core elements.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: February 24, 2015
    Assignee: Fujikura Ltd.
    Inventors: Yusuke Sasaki, Shoichiro Matsuo, Katsuhiro Takenaga
  • Patent number: 8958678
    Abstract: An electro-optic device, comprising an insulating layer and a layer of light-carrying material adjacent the insulating layer. The layer of light-carrying material, such as silicon, comprises a first doped region of a first type and a second doped region of a second, different type abutting the first doped region to form a pn junction. The first doped region has a first thickness at the junction, and the second doped region has a second thickness at the junction, the first thickness being greater than the second thickness, defining a waveguide rib in the first doped region for propagating optical signals. Since the position of the junction coincides with the sidewall of the waveguide rib a self-aligned process can be used in order to simplify the fabrication process and increase yield.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: February 17, 2015
    Assignee: University of Southampton
    Inventors: David Thomson, Frederic Gardes, Graham Reed
  • Patent number: 8950955
    Abstract: An optical fiber reinforcing heating device 6A is equipped with a base part 12, while the base part 12 is provided with a sleeve accommodation groove that contains a fiber reinforcement sleeve and a heater having a U-shaped cross section, which heats the fiber reinforcement sleeve. A pair of fiber holders 19 that holds and clamps fusion-spliced optical fibers 3 are disposed on both end sides of the sleeve accommodation groove. A lid part 23 that covers the fiber accommodation groove 13 is attached openably and closably to the base part 12 through a rotary axis. A protector 24 for windbreak and heat insulation is joined to the lid part 23 through a rotary axis 25. The protector 24 is a member for preventing winds from entering the sleeve accommodation groove from a gap between a side wall of the base part 12 and the lid part 23.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: February 10, 2015
    Assignee: SEI Optifrontier Co., Ltd.
    Inventors: Masakazu Fukuda, Ryuichiro Sato, Hisao Yui, Hiroshi Takayanagi
  • Patent number: 8953911
    Abstract: In part, the invention relates to a single clad fiber to multi-clad optical fiber connector for use in applying excitation light to a sample and obtaining reflected light from the sample. The connector can include a dual clad optical fiber portion and a single clad optical fiber portion in optical communication with the dual clad optical fiber portion. In one embodiment, a core of the dual clad optical fiber portion and a core of the single clad optical fiber portion have substantially similar indices of refraction. In one embodiment, excitation light is propagated by the core of the dual clad optical fiber. Further, in one embodiment, light reflected by the sample is propagated by the first cladding layer of the dual clad optical fiber portion.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: February 10, 2015
    Assignee: Lightlab Imaging, Inc.
    Inventors: Chenyang Xu, Joseph M. Schmitt
  • Patent number: 8948557
    Abstract: A fiber optic cable has a cable core that includes at least one optical fiber coupled to a fiber optic connector. A cable adapter sleeve is axially mounted on the cable core to surround the cable core, the cable adapter sleeve including a body portion that has a first outer diameter, a collar that has a second outer diameter that is greater than the first outer diameter, and a stop that has a third outer diameter that is greater than the first outer diameter.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: February 3, 2015
    Assignee: Andrew LLC
    Inventor: Nahid Islam
  • Patent number: 8948550
    Abstract: A sensing optical fiber comprising: a few-moded multi-segment core, said core comprising one core segment surrounded by another core segment, and at least one cladding surrounding said core; said core having an F factor (?m2) of 100 ?m2 to 350 ?m2, and is constructed to provide (i) an overlap integral between the fundamental optical guided mode and the fundamental acoustic guided mode of greater than 0.7 and (ii) the overlap integral between the LP11 optical guided mode and the fundamental acoustic guided mode at least 0.45.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: February 3, 2015
    Assignee: Corning Incorporated
    Inventors: Ming-Jun Li, Shenping Li
  • Patent number: 8942531
    Abstract: An optical fuse device adapted to be placed in between ends of lead-in fibers of an optical fiber line. The optical fuse device has a destructible region having a core, the destructible region including a light absorbing material adapted to heat and destroy the core upon application of a light intensity greater than a predetermined threshold. Optical fiber lines including the optical fuse device and methods of manufacturing the optical fuse device are provided. Numerous other aspects are provided.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: January 27, 2015
    Assignee: University of Maribor
    Inventors: Denis Donlagic, Simon Pevec
  • Patent number: 8938144
    Abstract: An optical fiber cable including, in a radial direction outward, a central strength member, a first layer of loose buffer tubes stranded around the central strength member, at least one of the loose buffer tubes of the first layer containing at least one light waveguide, an intermediate layer, a second layer of loose buffer tubes stranded around the intermediate layer, at least one of the loose buffer tubes of the second layer containing at least one light waveguide, and a jacket surrounding the second layer of loose buffer tubes, wherein the intermediate layer is formed of a material having a high coefficient of friction.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: January 20, 2015
    Assignee: Draka Comteq B.V.
    Inventors: Jan Hennink, Jean-Pierre Bonicel, Pascal Maria Willem Bindels
  • Patent number: 8934752
    Abstract: One embodiment includes a latching mechanism having a latch, a cam and a slider. The cam is configured to rotate about an axis of rotation. The cam is also configured to displace an end of the latch when the cam is rotated about the axis of rotation. The slider is operably connected to the cam and is configured to cause the cam to rotate about the axis of rotation.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: January 13, 2015
    Assignee: Finisar Corporation
    Inventors: Tat Ming Teo, Chris Togami, Frank Flens
  • Patent number: 8929702
    Abstract: A modular cable unit for oilfield wireline includes multiple cable modules. The cable modules are interchangeable to achieve a modular cable unit with desired telemetry and electrical properties to suit a specific application. The cable modules can be an optical fiber module, a power cable or an opto-electrical module assembly. The cable modules that make up the modular cable unit are preferably arranged in a triad configuration defining a substantially triangular tangent periphery and are surrounded by a polymeric casing having a circular periphery. The triad configuration of the modular cable unit contributes to an improved mechanical strength. A floating-tube type optical fiber element with improved mechanical strength is also disclosed.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: January 6, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Joseph Varkey, Vladimir Hernandez-Solis, Marwan Moufarrej
  • Patent number: 8929692
    Abstract: Provided is an optical integrated device comprising a first waveguide that is formed on a substrate and includes a first optical path; an electrode formed on the first waveguide; a second waveguide that is formed on the substrate and includes a second optical path; and a transparent waveguide that is formed on the substrate between the first waveguide and the second waveguide, and includes a transparent core that serves as an optical path and is formed of a material having higher bandgap energy than the first optical path. The electrode is formed above the first waveguide and is not formed above the transparent waveguide, and elements including the first waveguide are optically active elements that operate according to current injected thereto.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: January 6, 2015
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Norihiro Iwai, Hirotatsu Ishii
  • Patent number: 8926195
    Abstract: An optical module with an optical subassembly precisely aligned with an optical fiber is disclosed even when the optical axis of the optical subassembly and that of the optical fiber are perpendicular to each other. The optical module has an auxiliary with a knob and a flange each having a concentric circular periphery. The knob is held by chuck of the welding apparatus, while, the optical subassembly is fixed to the flange. Even when the optical subassembly is slid on the flange to align optically with the optical fiber, the positions of the laser beams for welding are kept on the periphery of the flange.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: January 6, 2015
    Assignee: Sumitomo Electric Device Innovations, Inc.
    Inventor: Takeshi Okada
  • 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