Patents by Inventor Suehiro Masayuki

Suehiro Masayuki 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 switch
    Patent number: 7200290
    Abstract: An optical switch has an optical waveguide whose output path of an optical signal branches into two, a carrier injection section which is provided to a branch portion of the optical waveguide and to which carriers are injected, and a refractive index change section which is provided to a optical waveguide layer of the optical waveguide and in which a refractive index changes in a case that carrier are injected to the carrier injection section, wherein the refractive index change section has a quantum dot or a quantum wire.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: April 3, 2007
    Assignee: Yokogawa Electric Corporation
    Inventors: Wada Morio, Araki Shoujirou, Dobashi Machio, Iio Shinji, Suehiro Masayuki, Asano Yoshiyuki, Nakajima Shinichi, Yakihara Tsuyoshi, Miura Akira
  • Optical switch
    Publication number: 20060013522
    Abstract: An optical switch has an optical waveguide whose output path of an optical signal branches into two, a carrier injection section which is provided to a branch portion of the optical waveguide and to which carriers are injected, and a refractive index change section which is provided to a optical waveguide layer of the optical waveguide and in which a refractive index changes in a case that carrier are injected to the carrier injection section, wherein the refractive index change section has a quantum dot or a quantum wire.
    Type: Application
    Filed: June 2, 2005
    Publication date: January 19, 2006
    Applicant: Yokogawa Electric Corporation
    Inventors: Wada Morio, Araki Shoujirou, Dobashi Machio, Iio Shinji, Suehiro Masayuki, Asano Yoshiyuki, Nakajima Shinichi, Yakihara Tsuyoshi, Miura Akira