Patents by Inventor Yukio Niino

Yukio Niino 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 for long period grating, long period grating component and manufacturing method of the same
    Patent number: 7362939
    Abstract: This invention relates to an optical fiber for long period grating (LPG), LPG components, and manufacturing method of LPG used as a mode coupler, an optical filter, etc. The optical fiber for LPG comprises a core layer, a first cladding layer that surrounds said core layer and transmits the cladding modes, and a second cladding layer that surrounds said first cladding layer and confines the optical signal of the cladding mode within said first cladding layer. The LPG component comprises an optical fiber for LPG, a coating reinforcement to cover and reinforce said optical fiber for LPG. The manufacturing method of LPG comprises a step of preparation of an optical fiber, a step of constructing the LPG on a predetermined region in said core of said optical fiber by irradiating laser light on said region over a predetermined period corresponding to the LPG, on the predetermined part of said optical fiber, and a step which covers and reinforces said grating region.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: April 22, 2008
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Toshiaki Tsuda, Yasuo Uemura, Keiichi Aiso, Takeshi Yagi, Yukio Niino, Kazuhiko Nishiyama, Hiroshi Kobayashi
  • Optical fiber for long period grating, long period grating component and manufacturing method of the same
    Publication number: 20060140559
    Abstract: This invention relates to an optical fiber for long period grating (LPG), LPG components, and manufacturing method of LPG used as a mode coupler, an optical filter, etc. The optical fiber for LPG comprises a core layer, a first cladding layer that surrounds said core layer and transmits the cladding modes, and a second cladding layer that surrounds said first cladding layer and confines the optical signal of the cladding mode within said first cladding layer. The LPG component comprises an optical fiber for LPG, a coating reinforcement to cover and reinforce said optical fiber for LPG. The manufacturing method of LPG comprises a step of preparation of an optical fiber, a step of constructing the LPG on a predetermined region in said core of said optical fiber by irradiating laser light on said region over a predetermined period corresponding to the LPG, on the predetermined part of said optical fiber, and a step which covers and reinforces said grating region.
    Type: Application
    Filed: February 8, 2006
    Publication date: June 29, 2006
    Inventors: Toshiaki Tsuda, Yasuo Uemura, Keiichi Aiso, Takeshi Yagi, Yukio Niino, Kazuhiko Nishiyama, Hiroshi Kobayashi