Optical waveguide path, manufacturing method and coupling method of the same, and optical waveguide path coupling structure
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United States of America Patent
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Sep 14, 2004
Grant Date -
May 30, 2002
app pub date -
Nov 29, 2001
filing date -
Nov 30, 2000
priority date (Note) -
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Abstract
An optical waveguide path coupling structure is realized without requiring highly accurate alignment. In an optical waveguide path coupling structure, a first optical waveguide path arranged on an optical device chip, which has a first cross section formed such that a core layer is exposed as an oblique plane with a slight angle .theta. of approximately 6 degrees, for example, at an end portion and a second cross section formed in an approximately vertical direction to the first cross section at a position apart from the first cross section by a predetermined distance, and a second optical waveguide path arranged on a base substrate, which has a first cross section formed such that the core layer is exposed as an oblique plane with a slight angle .theta. of approximately 6 degrees, for example, at an end portion and a second cross section formed in the approximately vertical direction to the first cross section at a position apart from the first cross section by a predetermined distance, are coupled by aligning the first cross sections and the second cross sections.
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