Patents by Inventor Yoshiyuki Shigeoka

Yoshiyuki Shigeoka 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 isolator element, a method for producing such an element, and an optical isolator using such an element
    Patent number: 7253956
    Abstract: An optical isolator is constructed such that an optical isolator element in which at least one flat Faraday rotator and at least two flat polarizers are bonded to each other into an integral unit by van der Waals forces or hydrogen-bonding forces acting between bonding surfaces of the Faraday rotator and the polarizers is accommodated in a tubular magnetic element.
    Type: Grant
    Filed: January 15, 2004
    Date of Patent: August 7, 2007
    Assignee: Kyocera Corporation
    Inventors: Michifumi Shoda, Yasushi Sato, Yukiko Furukata, Yoshiyuki Shigeoka
  • External resonator and semiconductor laser module using the same
    Publication number: 20050220163
    Abstract: An external resonator is provided with a fiber having a fiber Bragg grating for reflecting light of a specific wavelength and a ferrule which holds the above described fiber inside thereof. At least some phase gratings from among the respective phase gratings that form fiber Bragg grating are inclined relative to the optical axis of the fiber.
    Type: Application
    Filed: March 28, 2005
    Publication date: October 6, 2005
    Applicant: KYOCERA CORPORATION
    Inventors: Michitaka Okuta, Yoshiyuki Shigeoka
  • Optical isolator element, a method for producing such an element, and an optical isolator using such an element
    Publication number: 20040174598
    Abstract: An optical isolator is constructed such that an optical isolator element in which at least one flat Faraday rotator and at least two flat polarizers are bonded to each other into an integral unit by van der Waals forces or hydrogen-bonding forces acting between bonding surfaces of the Faraday rotator and the polarizers is accommodated in a tubular magnetic element.
    Type: Application
    Filed: January 15, 2004
    Publication date: September 9, 2004
    Applicant: KYOCERA CORPORATION
    Inventors: Michifumi Shoda, Yasushi Sato, Yukiko Furukata, Yoshiyuki Shigeoka