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Optical coupling structure

  • US 6,801,692 B2
  • Filed: 02/04/2002
  • Issued: 10/05/2004
  • Est. Priority Date: 02/06/2001
  • Status: Expired due to Term
First Claim
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1. An optical coupling structure to connect an optical fiber and a plane optical waveguide, comprising:

  • a core having same cross-sectional dimensions as core cross sectional dimensions of the plane optical waveguide at one side connecting to the plane optical waveguide, and having width and depth smaller than a core diameter of the optical fiber at a fiber interface side connecting to the optical fiber wherein at least one of width and depth of the core is tapered along an optical axis proximate to the fiber interface side; and

    , clad to surround the core.

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