Process for producing an optical waveguide and the product therefrom
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United States of America Patent
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Apr 26, 1988
Grant Date -
N/A
app pub date -
Jan 8, 1987
filing date -
Jan 8, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
There is disclosed a process for producing an optical waveguide comprising contacting at least one optically smooth surface of a single crystal of K.sub.1-x Rb.sub.x TiOMO.sub.4 wherein x is from 0 to 1 and M is P or As with a specified molten salt of at least one of Rb, Cs and Tl at a temperature of from about 200.degree. C. to about 600.degree. C. for a time sufficient to increase the surface index of refraction at least about 0.00025 with respect to the index of refraction of the starting crystal, and cooling the resulting crystal. The product made thereby and a waveguide device using the same are also disclosed.
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