Method of producing optical waveguides
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United States of America Patent
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Jul 30, 1991
Grant Date -
N/A
app pub date -
Apr 12, 1990
filing date -
Apr 13, 1989
priority date (Note) -
Expired
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Abstract
The invention relates to a method of producing optical waveguides by ion exchange technique in a glass substrate (1), the ion exchange between a source of ions (such as AgNO.sub.3) and the glass substrate (1) taking place within glass substrate surface areas (6) which do not comprise any ion exchange mask. In the method of the invention, the ion exchange mask is formed by depletion areas (5A, 5B) formed in the surface of the glass substrate.
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