Patents by Inventor Yukiko Ikarashi

Yukiko Ikarashi 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 parts coupling structure, method of manufacturing the same, optical switch, two-dimensional lens array, and method of manufacturing the same
    Patent number: 7043111
    Abstract: A first optical waveguide having at least a core layer with a refractive index ncj and a second optical waveguide having at least a core layer with a refractive index nck are arranged to oppose their end surfaces, and at least any one end surface of the first optical waveguide and the second optical waveguide is formed by the etching, and the end surface formed by the etching is covered with a coating medium with a refractive index nij or nik that is equal to a refractive index ncj or nck of the core layer that is exposed from the end surface.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: May 9, 2006
    Assignee: Fujitsu Limited
    Inventors: Yukiko Ikarashi, Masayuki Kato, Koji Tsukamoto
  • Optical parts coupling structure, method of manufacturing the same, optical switch, two-dimensional lens array, and method of manufacturing the same
    Publication number: 20060029321
    Abstract: A first optical waveguide having at least a core layer with a refractive index ncj and a second optical waveguide having at least a core layer with a refractive index nck are arranged to oppose their end surfaces, and at least any one end surface of the first optical waveguide and the second optical waveguide is formed by the etching, and the end surface formed by the etching is covered with a coating medium with a refractive index nij or nik that is equal to a refractive index ncj or nck of the core layer that is exposed from the end surface.
    Type: Application
    Filed: October 5, 2005
    Publication date: February 9, 2006
    Applicant: Fujitsu Limited
    Inventors: Yukiko Ikarashi, Masayuki Kato, Koji Tsukamoto
  • Optical parts coupling structure, method of manufacturing the same, optical switch, two-dimensional lens array, and method of manufacturing the same
    Patent number: 6980718
    Abstract: A first optical waveguide having at least a core layer with a refractive index ncj and a second optical waveguide having at least a core layer with a refractive index nck are arranged to oppose their end surfaces, and at least any one end surface of the first optical waveguide and the second optical waveguide is formed by the etching, and the end surface formed by the etching is covered with a coating medium with a refractive index nij or nik that is equal to a refractive index ncj or nck of the core layer that is exposed from the end surface.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: December 27, 2005
    Assignee: Fujitsu Limited
    Inventors: Yukiko Ikarashi, Masayuki Kato, Koji Tsukamoto
  • Optical parts coupling structure, method of manufacturing the same, optical switch, two-dimensional lens array, and method of manufacturing the same
    Publication number: 20030223692
    Abstract: A first optical waveguide having at least a core layer with a refractive index ncj and a second optical waveguide having at least a core layer with a refractive index nck are arranged to oppose their end surfaces, and at least any one end surface of the first optical waveguide and the second optical waveguide is formed by the etching, and the end surface formed by the etching is covered with a coating medium with a refractive index nij or nik that is equal to a refractive index ncj or nck of the core layer that is exposed from the end surface.
    Type: Application
    Filed: May 29, 2003
    Publication date: December 4, 2003
    Applicant: FUJITSU LIMITED
    Inventors: Yukiko Ikarashi, Masayuki Kato, Koji Tsukamoto