Method for forming optical waveguide
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United States of America Patent
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Aug 22, 2006
Grant Date -
Jul 14, 2005
app pub date -
Dec 9, 2002
filing date -
Dec 20, 2001
priority date (Note) -
Expired
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Abstract
The present invention provides a method for forming an optical waveguide characterized by applying a paste containing a copper compound to a glass substrate containing an alkali metal as a glass component over the whole surface thereof or in a patterned form, and performing heat treatment at a temperature lower than the softening temperature of the glass substrate.The method of the invention can produce an optical waveguide without the need for a high vacuum as in the thin film deposition method and without the use of a molten salt, and is capable of dispersing Cu.sup.+ ions selectively in a glass substrate with excellent controllability.
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