Patents by Inventor Naoki Amatatsu

Naoki Amatatsu 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).

  • Optical fiber splicing method
    Patent number: 6860119
    Abstract: An optical fiber splicing method is provided for largely reducing an optical loss in a splice and eliminating a varying outer diameter and bending deformation. This splicing method splices opposing end faces of two optical fibers by fusion, and heats a formed fusion splice to match mode field diameters of the two optical fibers in the fusion splice, wherein the two optical fibers are fixed with an axial tension applied or not applied to the fusion splice, after the formation of the fusion splice, before the fusion splice is heated.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: March 1, 2005
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Tetsuo Suzuki, Naoki Amatatsu, Hiroaki Oonuma, Wataru Komatsu
  • Optical fiber splicing method
    Publication number: 20020197028
    Abstract: An optical fiber splicing method is provided for largely reducing an optical loss in a splice and eliminating a varying outer diameter and bending deformation. This splicing method splices opposing end faces of two optical fibers by fusion, and heats a formed fusion splice to match mode field diameters of the two optical fibers in the fusion splice, wherein the two optical fibers are fixed with an axial tension applied or not applied to the fusion splice, after the formation of the fusion splice, before the fusion splice is heated.
    Type: Application
    Filed: June 11, 2002
    Publication date: December 26, 2002
    Inventors: Tetsuo Suzuki, Naoki Amatatsu, Hiroaki Oonuma, Wataru Komatsu