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Semiconductor device comprising an integrated optical guide, which has at least one rectilinear part and one curved part

  • US 4,999,686 A
  • Filed: 06/06/1989
  • Issued: 03/12/1991
  • Est. Priority Date: 06/24/1988
  • Status: Expired due to Term
First Claim
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1. A semiconductor device, comprising:

  • an integrated optical guide, which has at least one rectilinear part and one curved part, and means for confining light in the guide in the curved part, the means for confining comprisinga groove provided along an edge of the guide in the region of the curved part,a guiding layer and, overlying said guiding layer, a guiding ribbon in relief for determining the optical path followed by the light in the guiding layer, andthe groove having a constant depth, a central part which exactly follows the edge of the guiding ribbon in the curved part, ends which diverge from the edge of said ribbon at the beginning and at the end of the curved part, and a bottom disposed in the guiding layer at a level which does not reach the lower part of said guiding layer.

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