发明申请
US20080199128A1 Semiconductor integrated optical element 审中-公开
半导体集成光学元件

  • 专利标题: Semiconductor integrated optical element
  • 专利标题(中): 半导体集成光学元件
  • 申请号: US12071007
    申请日: 2008-02-14
  • 公开(公告)号: US20080199128A1
    公开(公告)日: 2008-08-21
  • 发明人: Shinsuke TanakaKen Morito
  • 申请人: Shinsuke TanakaKen Morito
  • 申请人地址: JP Kawasaki
  • 专利权人: FUJITSU LIMITED
  • 当前专利权人: FUJITSU LIMITED
  • 当前专利权人地址: JP Kawasaki
  • 优先权: JP2007-035318 20070215
  • 主分类号: G02B6/12
  • IPC分类号: G02B6/12
Semiconductor integrated optical element
摘要:
Aiming at realizing a semiconductor integrated optical element comprising a single semiconductor substrate, and first and second optical waveguides differed in the equivalent refractive index from each other on the semiconductor substrate, allowing light signal to propagate from the first optical waveguide to the second optical waveguide, in which the first and second optical waveguides are provided side-by-side on the semiconductor substrate to form a directional coupler allowing optical coupling between the first and second optical waveguides, and a first-guiding-mode optical signal in the first optical waveguide is output after being converted into a second-guiding-mode optical signal in second optical waveguide, which makes possible to suppress generation of reflection loss and emission loss in optical coupling, and obtain extremely desirable optical coupling characteristics, without causing reflection of optical signal, between different types of optical waveguides differed from each other in the equivalent refractive index.
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