Patents by Inventor Hitomi Ohri

Hitomi Ohri 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).

  • Method of optically coupling optical fiber to waveguide on substrate, and optical device produced by the method
    Patent number: 5018817
    Abstract: A method of optically coupling one end of an optical fiber to a waveguide formed on a substrate, such that an end portion of the fiber is fitted in a groove formed in the substrate. The groove is formed by forming a beam-shielding mask having a cutout, on the substrate such that the cutout is aligned with a part of the substrate in which the groove is formed, and by irradiating the above-indicated part of the substrate with a high-energy beam. Alternatively, the groove is formed by a cutting tool. An inclined end surface of the groove left uncut by the tool may be irradiated with a high-energy beam, through a beam-shielding mask which has a cutout aligned with the inclined end surface. The end of the optical fiber, which has a flat face or has a coned or hemi-spherical shape, is positioned for optical coupling with a portion of the waveguide which is exposed to the groove.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: May 28, 1991
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Makoto Suzuki, Satoshi Watanabe, Takashi Tsukamoto, Hikoharu Aoki, Hitomi Ohri, Yukihiro Sako