Patents by Inventor Yousuke OONAWA

Yousuke OONAWA 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 waveguide element and receiving circuit
    Patent number: 10088628
    Abstract: The optical waveguide element has a first optical waveguide core; and a second optical waveguide core. In the optical waveguide element, the first optical waveguide core includes a first coupling portion configured to propagate any one polarized wave of a TE polarized wave and a TM polarized wave of a kth-order mode, the other polarized wave of an hth-order mode, and the other polarized wave of a pth-order mode, and a first Bragg reflector connected to the first coupling portion. The second optical waveguide core includes a second coupling portion.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: October 2, 2018
    Assignees: Oki Electric Industry Co., Ltd., PHOTONICS ELECTRONICS TECHNOLOGY RESEARCH ASSOCIATION
    Inventors: Yousuke Oonawa, Hideaki Okayama
  • OPTICAL WAVEGUIDE ELEMENT AND RECEIVING CIRCUIT
    Publication number: 20180267237
    Abstract: The optical waveguide element has a first optical waveguide core; and a second optical waveguide core. In the optical waveguide element, the first optical waveguide core includes a first coupling portion configured to propagate any one polarized wave of a TE polarized wave and a TM polarized wave of a kth-order mode, the other polarized wave of an hth-order mode, and the other polarized wave of a pth-order mode, and a first Bragg reflector connected to the first coupling portion. The second optical waveguide core includes a second coupling portion.
    Type: Application
    Filed: December 12, 2017
    Publication date: September 20, 2018
    Applicants: Oki Electric Industry Co., Ltd., Photonics Electronics Technology Research Association
    Inventors: Yousuke OONAWA, Hideaki OKAYAMA