Patents Examined by Michelle R. Connelly
  • Patent number: 10048455
    Abstract: Embodiments herein include an optical system that passively aligns a fiber array connector (FAC) to a waveguide in a photonic chip. An underside of the FAC is etched to include multiple grooves along a common axis or plane. Some of these grooves are used to attach optical cables, or more specifically, the fibers of optical cables to the FAC. To do so, the fibers are placed in the grooves and a lid is disposed on the underside of the fibers to hold the fibers in the grooves. The optical system uses other grooves in the FAC to mate with ridges in the photonic chip in order to mechanically couple the FAC to the photonic chip. By registering respective ridges in the photonic chip with grooves in the FAC, the FAC is passively aligned to the photonic chip along at least one optical axis.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: August 14, 2018
    Assignee: Cisco Technology, Inc.
    Inventor: Stefan Martin Pfnuer
  • Patent number: 10031282
    Abstract: An optical fiber containing alkali metal elements or the like in which Rayleigh scattering loss can be reduced is provided. An optical fiber includes a core composed of silica glass and a cladding which surrounds the core, has a refractive index lower than a refractive index of the core, and is composed of silica glass containing fluorine. The core contains a first group of dopants and a second group of dopants having a diffusion coefficient lower than a diffusion coefficient of the first group of dopants. The difference between the maximum value and the minimum value of residual stress in the optical fiber is 150 MPa or less.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: July 24, 2018
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hirotaka Sakuma, Yoshiaki Tamura, Keisei Morita
  • Patent number: 10031292
    Abstract: Techniques for forming a facet optical coupler that includes a waveguide formed over a trench of a silicon substrate are described. The trench is formed in a silicon substrate and then filled with a dielectric material. The waveguide is patterned on the dielectric material over the trench such that the waveguide is disposed a distance from the first surface. A first end of the waveguide has a first size and a second end of the waveguide distal the first end has a second size different than the first size. A material of the waveguide and the first size define a mode size of the waveguide.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: July 24, 2018
    Assignee: Acacia Communications, Inc.
    Inventor: Long Chen
  • Patent number: 10012806
    Abstract: The application provides methods of forming a fiber coupling device comprising a substrate, the substrate having a substrate surface and at least one optoelectronic and/or photonic element, and further comprising at least one fiber coupling alignment structure that is optically transmissive. One method comprises a) applying a polymerizable material to the substrate surface, b) selectively polymerizing, using a method of 3D lithography, a region of the polymerizable material so as to convert the region of the polymerizable material into a polymer material, thereby forming at least one fiber coupling alignment structure, and c) cleaning the substrate and the polymer material from remaining non-polymerized polymerizable material, thereby exposing the at least one fiber coupling alignment structure of the fiber coupling device.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: July 3, 2018
    Assignee: Corning Optical Communications LLC
    Inventors: Michael de Jong, Davide Domenico Fortusini, Andreas Matiss, Martin Spreemann, Eric Stephan ten Have
  • Patent number: 9995878
    Abstract: A polarization splitter/combiner and method of forming the same includes a first waveguide having a direction of propagation in a first direction. The height of the first waveguide is greater than the width of the first waveguide. A second waveguide is in proximity to the first waveguide and has a direction of propagation substantially parallel to the first direction in an interaction region. The second waveguide includes a first portion having a greater than the width of the first portion and a second portion having a width greater than a height of the second portion.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: June 12, 2018
    Assignee: International Business Machines Corporation
    Inventors: Tymon Barwicz, Wesley D. Sacher
  • Patent number: 9995899
    Abstract: An optical fiber distribution or breakout cable for serving multiple customer premises in a multi-dwelling unit (MDU) building. The cable contains a number of bend insensitive fibers each having a different colored coating for identification. A jacket of a flame-retardant polymer compound is extruded to surround the fibers. The jacket is sufficiently opaque to hide the color coated fibers at least partially from view, and the outer diameter of the jacket is not more than about 3.5 mm. A procedure for installing the cable through a hallway of a MDU building so as to lessen any negative visual impact of the installation on observers nearby is also disclosed.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: June 12, 2018
    Assignee: OFS FITEL, LLC
    Inventors: Mark A Boxer, Daniel Hendrickson, Peter A Weimann
  • Patent number: 9995900
    Abstract: The present invention relates to a stacked optical fiber storage compartment formed to receive optical fibers, facilitate the connection of optical fibers and optical jumper cords, and facilitate the arranging and grouping of optical fibers. The stacked optical fiber storage compartment according to the present invention comprises: a compartment body including a main body portion having a receiving space and an open upper portion, and an opening and closing cover pivotably coupled on the main body portion to open and close the open upper portion of the main body portion; and an optical fiber connecting unit installed on the main body portion to receive and connect the respective optical fibers withdrawn from each of the tubes for optical cables extending into the compartment body.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: June 12, 2018
    Inventor: Chae Hyeon Im
  • Patent number: 9989716
    Abstract: The present application describes a signal conveying system including plural cables and a feedthrough assembly. The feedthrough assembly includes a main housing. The assembly also includes at least one housing positioned within the main housing with an internal wall that defines a plurality of conduits. The assembly also includes a volume defined by an internal surface of the main housing. The assembly further includes a sealing material provided in the volume. The application also describes a method of conveying optical signals.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: June 5, 2018
    Assignee: LGS INNOVATIONS LLC
    Inventors: Renato M. Camarda, Alfonso B. Piccirilli
  • Patent number: 9983420
    Abstract: In the optical device, a ring-resonator modulator, having an adjustable resonance (center) wavelength, optically couples an optical signal that includes the carrier wavelength from an input optical waveguide to an output optical waveguide. A monitoring mechanism in the optical device, which is optically coupled to the output optical waveguide, monitors a performance metric of an output optical signal from the output waveguide. For example, the monitoring mechanism may monitor: an average optical power associated with the output optical signal, and/or an amplitude of the output optical signal. Moreover, control logic in the optical device adjusts the resonance wavelength based on the monitored performance metric so that the performance metric is optimized.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: May 29, 2018
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Philip Amberg, Eric Y. Chang, Xuezhe Zheng, Frankie Y. Liu, Ronald Ho, Ashok V. Krishnamoorthy
  • Patent number: 9977310
    Abstract: A digital-electronic-to-analog-optical converter, which has a structure consistent with a super-Mach-Zehnder interferometer, and which can perform the functionalities of both a Digital to Analog Converter (DAC) and a digital modulator uses a sub-Mach-Zender modulator to modulate optical wave signals propagating through its optical waveguide in a push-pull manner. The modulation performed is phase modulation realized with electrodes positioned near the optical wave guide where such electrodes carry modulation signals in digital, analog or discrete time signal format creating electromagnetic or electric fields that engage the optical wave signals traveling through the waveguide thus imparting a phase shift onto the optical wave signals. The amount of the phase shift can be implemented through the geometry of the electrodes, the length of time the modulating signal is applied, and the amplitude of the modulating signal.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: May 22, 2018
    Assignee: Alcatel Lucent
    Inventors: Peter J. Winzer, Chandrasekhar Sethumadavan, Gregory Raybon
  • Patent number: 9977186
    Abstract: A semiconductor device including an optical waveguide and a p-type semiconductor portion is configured as follows. The optical waveguide includes: a first semiconductor layer formed on an insulating layer; an insulating layer formed on the first semiconductor layer; and a second semiconductor layer formed on the insulating layer. The p-type semiconductor portion includes the first semiconductor layer. The film thickness of the p-type semiconductor portion is smaller than that of the optical waveguide. By forming the insulating layer between the first semiconductor layer and the second semiconductor layer, control of the film thicknesses of the optical waveguide and the p-type semiconductor portion is facilitated. Specifically, when the unnecessary second semiconductor layer is removed by etching in a step of forming the p-type semiconductor portion, the insulating layer which is the lower layer functions as an etching stopper, and the film thickness of the p-type semiconductor portion can be easily adjusted.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: May 22, 2018
    Assignee: Renesas Electronics Corporation
    Inventors: Yasutaka Nakashiba, Shinichi Watanuki
  • Patent number: 9971115
    Abstract: A data communication system is disclosed including a cable medium and modulator adapted to carry data and power between a high speed data source and a high speed data sink. Relatively high speed data (e.g. the TMDS data of an HDMI interface) may be carried on optical waveguides in the cable medium. Relatively low-speed data (e.g., DDC data and clock, and CEC of an HDMI interface) may be carried on a separate set of optical waveguides or wire mediums. The optical waveguides allow for substantially less signal distortion of the high-speed data, thereby allowing the cable medium to achieve much higher lengths without significantly affecting the high-speed signaling.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: May 15, 2018
    Assignee: cosemi technologies, inc.
    Inventors: Wenbin Jiang, Chien-Yu Kuo, Nguyen X. Nguyen
  • Patent number: 9971108
    Abstract: The application provides methods of forming a fiber coupling device comprising a substrate, the substrate having a substrate surface and at least one optoelectronic and/or photonic element, and further comprising at least one fiber coupling alignment structure that is optically transmissive. The method comprises a) applying a polymerizable material to the substrate surface, b) selectively polymerizing, using a method of 3D lithography, a region of the polymerizable material so as to convert the region of the polymerizable material into a polymer material, thereby forming at least one fiber coupling alignment structure, and c) cleaning the substrate and the polymer material from remaining non-polymerized polymerizable material, thereby exposing the at least one fiber coupling alignment structure of the fiber coupling device.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: May 15, 2018
    Assignee: Corning Optical Communications LLC
    Inventors: Michael de Jong, Andreas Matiss, Martin Spreemann, Eric Stephan ten Have
  • Patent number: 9963541
    Abstract: According to the present invention, a photosensitive resin composition for an optical waveguide contains a resin component and a photopolymerization initiator. The resin component has an absorbance of less than 0.03 as measured at 2960 cm?1 by an attenuated total reflection measurement (ATR) method by means of a Fourier transform infrared spectrophotometer (FT-IR), and includes a polymerizable substituent-containing resin as a main component. Where the inventive optical waveguide photosensitive resin composition is used as a material for the optical waveguide, particularly as a core layer formation material for the optical waveguide, it is possible to reduce a loss, for example, by avoiding vibrational absorption occurring at an optical waveguide transmission light wavelength of 850 nm due to a resin skeleton.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: May 8, 2018
    Assignee: NITTO DENKO CORPORATION
    Inventors: Tomoyuki Hirayama, Naoya Sugimoto
  • Patent number: 9964708
    Abstract: A bending compensation device for a waveguide, including a direction changing device configured to maintain a constant bending angle to the waveguide, a distal end of the waveguide having a first orientation, and the proximal end of the waveguide having a second orientation, and a motion device connected to the direction changing device, the motion device configured to move the direction changing device upon a movement of the waveguide.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: May 8, 2018
    Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventors: Damien Loterie, Sebastien Walpen, Edgar Emilio Morales Delgado, Christophe Moser, Demetri Psaltis
  • Patent number: 9964698
    Abstract: An optical fiber cable assembly which includes an optical fiber cable which includes at least a first core and a second core positioned spaced apart from one another within a cladding material, wherein the at least first core and the second core and the cladding material extend in a direction of a length of the optical fiber cable. The assembly further includes material positioned at a predetermined location along the length of the optical fiber cable, wherein the material is associated with the optical fiber cable such that when the material is exposed to an environment change, the material transmits a force onto the optical fiber cable, changing a shape of the optical fiber cable.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: May 8, 2018
    Assignee: THE BOEING COMPANY
    Inventors: Kenneth C. Noddings, Frederick L. Brinlee, Brian J. Fujimori
  • Patent number: 9958604
    Abstract: In this multi-core fiber, a plurality of cores are arranged at a prescribed interval, and the peripheries thereof are covered by a cladding having a lower refractive index than the plurality of cores. A resin coating is formed on the outer periphery of the cladding. A colored section is formed on a section of the outer surface of the resin coating in the peripheral direction. The colored section is formed continuously along the length direction of the multi-core fiber. In a multi-core fiber cross section orthogonal to the length direction, the position of a specific core and the peripheral position where the colored section is formed are substantially constant along the length direction of the multi-core fiber. In other words, in the multi-core fiber cross section orthogonal to the length direction, the position of the specific core and the position where the colored section is formed are substantially constant along the length direction of the multi-core fiber.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: May 1, 2018
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventor: Kunio Kokura
  • Patent number: 9952384
    Abstract: An optical diode (1) comprising an optical wave guide for guiding light, preferably of a light mode, with a vacuum wavelength ?0, wherein the optical wave guide has a wave guide core (2, 3, 14) with a first index of refraction (n1), and the wave guide core (2, 3, 14) is surrounded by at least one second optical medium which has at least one second index of refraction (n2), wherein n1>n2 applies, wherein the wave guide core (2, 3, 14) has at least in sections a smallest lateral dimension (7) which is a smallest dimension of a cross section (6) perpendicular to a propagation direction (5) of the light in the wave guide core (2, 3, 14), wherein the smallest lateral dimension (7) is greater than or equal to ?0/(5*n1) and less than or equal to 20*?0/n1, wherein the optical diode (1) additionally comprises at least one absorber element (10, 11, 15, 16) which is arranged in a near field, wherein the near field consists of the electromagnetic field of the light of the vacuum wavelength ?0 in the wave guide core (2
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: April 24, 2018
    Assignee: Technische Universit├Ąt Wien
    Inventors: J├╝rgen Volz, Philipp Schneeweiss, Clement Sayrin, Arno Rauschenbeutel
  • Patent number: 9952389
    Abstract: To provide a multiplexer that makes it possible to achieve a reduction in size and that minimizes the influence of the expansion of laser light on a multiplexing unit. A multiplexer is provided with a plurality of waveguides, multiplexing units that are provided at an intermediate location within the waveguides, and laser light sources, wherein: the first multiplexing unit is arranged at a position that is closest to the laser light sources; and the laser light sources that have an optical axis at a position that is separated from the transmission axis of the visible light that is introduced into the first multiplexing unit are arranged so that the optical axis is inclined with respect to the transmission axis and the outer periphery of laser light that expands at a predetermined expansion angle passes in front of the first multiplexing unit.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: April 24, 2018
    Assignee: NATIONAL UNIVERSITY CORPORATION UNIVERSITY OF FUKUI
    Inventors: Toshio Katsuyama, Akira Nakao
  • Patent number: 9946034
    Abstract: A plug may be coupled with a cable and include a fiber ferrule extending from the plug. A biasing mechanism may be arranged to bias a cover toward a covered configuration in which the fiber ferrule is situated within an internal volume defined by the cover and away from an uncovered configuration in which the fiber ferrule is situated at least partially outside of the internal volume defined by the cover. Bristles or other blockers may be positioned along or within a boundary of the internal volume of the cover, may be arranged to block particulate entry through the blockers into the internal volume of the cover in the covered configuration, and may be movable to permit passage of the fiber ferrule through the blockers in response to movement of the cover between the covered configuration and uncovered configuration.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: April 17, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: Jason Eslick, Alan Michael Judge, Alaa Adel Mahdi Hayder, Colin John Whittaker