Patents Assigned to Denshin Denwa Kabushiki Kaisha Kokusai
  • Semiconductor integrated light emitting device
    Patent number: 4811352
    Abstract: A semiconductor integrated light emitting device is disclosed which comprises a light emitting waveguide including a light emitting layer, and an external waveguide directly coupled to the light emitting waveguide. In accordance with the present invention, the light emitting waveguide and the external waveguide are mutually laminated in the vicinity of a region where they are directly coupled together.The intensity of the optical output from the light emitting waveguide is modulated in the external waveguide by the electroabsorption effect.
    Type: Grant
    Filed: January 22, 1988
    Date of Patent: March 7, 1989
    Assignee: Denshin Denwa Kabushiki Kaisha Kokusai
    Inventors: Masatoshi Suzuki, Shigeyuki Akiba, Hideaki Tanaka, Yukitoshi Kushiro