Patents by Inventor Saori KUBARA

Saori KUBARA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11360260
    Abstract: A method for manufacturing an optical fiber includes: exposing a glass fiber by stripping a fiber coating layer at an end portion, on a splicing side, of each of a pair of optical fibers; fusion-splicing the glass fibers; and recoating a protective resin on a periphery of exposed portions of the glass fibers. The fiber coating layer includes a primary resin layer on an inner peripheral side and having a Young's modulus of 0.5 MPa or less and a secondary resin layer on an outer peripheral side and having a Young's modulus of 800 MPa or greater, the exposing includes forming a shape of a coating edge of the fiber coating layer which includes the primary resin layer and the secondary resin layer into a tapered shape which becomes narrower toward the end portion side, and the recoating includes coating the protective resin to include the coating edge.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: June 14, 2022
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Saori Kubara, Suguru Takasaki, Shuhei Toyokawa
  • Publication number: 20200379170
    Abstract: A method for manufacturing an optical fiber includes: exposing a glass fiber by stripping a fiber coating layer at an end portion, on a splicing side, of each of a pair of optical fibers; fusion-splicing the glass fibers; and recoating a protective resin on a periphery of exposed portions of the glass fibers. The fiber coating layer includes a primary resin layer on an inner peripheral side and having a Young's modulus of 0.5 MPa or less and a secondary resin layer on an outer peripheral side and having a Young's modulus of 800 MPa or greater, the exposing includes forming a shape of a coating edge of the fiber coating layer which includes the primary resin layer and the secondary resin layer into a tapered shape which becomes narrower toward the end portion side, and the recoating includes coating the protective resin to include the coating edge.
    Type: Application
    Filed: February 19, 2019
    Publication date: December 3, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Saori KUBARA, Suguru TAKASAKI, Shuhei TOYOKAWA
  • Patent number: 10775555
    Abstract: The present embodiment relates to an optical fiber line or the like configured by connecting a single-mode optical fiber with a cladding containing fluorine and a large Aeff optical fiber by TEC connection, and a connection state between such two types of optical fibers is set such that a connection loss expressed in dB of a fundamental mode is equal to or less than 55% of an ideal butt loss expressed in dB at a wavelength of 1550 nm.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: September 15, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Masato Suzuki, Yoshiaki Tamura, Yoshinori Yamamoto, Takemi Hasegawa, Suguru Takasaki, Saori Kubara
  • Publication number: 20190278021
    Abstract: The present embodiment relates to an optical fiber line or the like configured by connecting a single-mode optical fiber with a cladding containing fluorine and a large Aeff optical fiber by TEC connection, and a connection state between such two types of optical fibers is set such that a connection loss expressed in dB of a fundamental mode is equal to or less than 55% of an ideal butt loss expressed in dB at a wavelength of 1550 nm.
    Type: Application
    Filed: May 21, 2019
    Publication date: September 12, 2019
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Masato SUZUKI, Yoshiaki TAMURA, Yoshinori YAMAMOTO, Takemi HASEGAWA, Suguru TAKASAKI, Saori KUBARA
  • Patent number: 10359564
    Abstract: A method of manufacturing multi-mode optical fiber is disclosed. The method of manufacturing includes: a step of forming a first glass base material while controlling a supply rate of an additive for adjusting a refractive index to achieve a desired refractive index distribution; a step of drawing the first glass base material; a step of measuring a residual stress distribution in a radial direction of the multi-mode optical fiber after being drawn; a step of readjusting the supply rate of the additive in accordance with deviation of a refractive index, acquired from the residual stress distribution measured, from the desired refractive index distribution; a step of forming a second glass base material while supplying the additive at the supply rate after being readjusted; and a step of drawing the second glass base material.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: July 23, 2019
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Saori Kubara, Tomohiro Ishihara, Kazuhiro Yonezawa
  • Publication number: 20170057864
    Abstract: A method of manufacturing multi-mode optical fiber is disclosed. The method of manufacturing includes: a step of forming a first glass base material while controlling a supply rate of an additive for adjusting a refractive index to achieve a desired refractive index distribution; a step of drawing the first glass base material; a step of measuring a residual stress distribution in a radial direction of the multi-mode optical fiber after being drawn; a step of readjusting the supply rate of the additive in accordance with deviation of a refractive index, acquired from the residual stress distribution measured, from the desired refractive index distribution; a step of forming a second glass base material while supplying the additive at the supply rate after being readjusted; and a step of drawing the second glass base material.
    Type: Application
    Filed: August 31, 2016
    Publication date: March 2, 2017
    Inventors: Saori KUBARA, Tomohiro ISHIHARA, Kazuhiro YONEZAWA