Manufacture of planar waveguide and planar waveguide
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United States of America Patent
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Apr 16, 2002
Grant Date -
N/A
app pub date -
Mar 16, 1999
filing date -
Sep 17, 1996
priority date (Note) -
Expired
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Abstract
A metal film (12) is formed on the surface of a glass substrate (10) and etched to form a pair of electrodes (12a and 12b) which face each other with a certain gap therebetween (S11.about.S13). The substrate (10) is doped with germanium, etc, by using the electrodes (12a and 12b) as a mask to form a core part (14, S14). Then a high voltage is applied between the electrodes while ultraviolet radiation is applied and the core part (14) is subjected to ultraviolet-driven boring to give the optical nonlinearity to the core part (14, S15). The voltage application to the core part (14) having the optical nonlinearity is controlled to control a light transmitting through the core part (14).
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