Slotted monolithic optical waveguides
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United States of America Patent
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Jul 23, 2002
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N/A
app pub date -
Jul 2, 1999
filing date -
Jul 2, 1999
priority date (Note) -
Expired
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Abstract
An optical waveguide phase adjuster with enhanced sensitivity for instance for use in a Mach Zehnder has a monolithic integrated optics waveguide across which one or more thin, e.g. 10 .mu.m, slots are made. The slots are filled with material whose refractive index varies strongly with temperature or applied field. The insertion loss of such a slot is small for thicknesses of less than about 25 .mu.m, but begins to rise ever more rapidly thereafter.
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