Patents by Inventor Kazunari Fujimoto

Kazunari Fujimoto 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 transmission line constituting method, optical transmission line and optical fiber
    Patent number: 7359602
    Abstract: The present invention relates to a method of forming a transmission line capable of measuring more precise connection losses at low cost, and so on. At least of first and second optical fibers to be connected as components of the optical transmission line is selected such that, at one wavelength ? contained in the wavelength range of 1260 nm to 1625 nm, predetermined relationships defined by the Rayleigh scattering coefficients of the first and second optical fibers, the mode field diameters of the first and second optical fibers at the wavelength ?, and the transmission losses of the first and second optical fibers at the wavelength ? can be satisfied between the first and second optical fibers.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: April 15, 2008
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Eisuke Sasaoka, Yoshinori Yamamoto, Kazunari Fujimoto
  • Optical transmission line constituting method, optical transmission line and optical fiber
    Publication number: 20060056785
    Abstract: The present invention relates to a method of forming a transmission line capable of measuring more precise connection losses at low cost, and so on. At least of first and second optical fibers to be connected as components of the optical transmission line is selected such that, at one wavelength ? contained in the wavelength range of 1260 nm to 1625 nm, predetermined relationships defined by the Rayleigh scattering coefficients of the first and second optical fibers, the mode field diameters of the first and second optical fibers at the wavelength ?, and the transmission losses of the first and second optical fibers at the wavelength ? can be satisfied between the first and second optical fibers.
    Type: Application
    Filed: August 4, 2004
    Publication date: March 16, 2006
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Eisuke Sasaoka, Yoshinori Yamamoto, Kazunari Fujimoto