Thermo-optical switch
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United States of America Patent
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-
Apr 10, 2001
Grant Date -
N/A
app pub date -
Jun 19, 1998
filing date -
Dec 19, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
For reducing power consumption and cross-talk in the transmission of broadband optical signals without prior conversion into electrical signals there are provided in a thermo-optical switch two waveguides (WL1 and WL2) extending closely adjacent each other over their interactive length the width of which is at least partially covered by one or two pairs of lamellate electrode arms of a heating electrode (E), the arms of each pair being interconnected by a common web (G) and being of similar geometric shape as the waveguides (WL1 and WL2) positioned below them. Furthermore, means is provided for changing and/or setting the thermal and/or geometric symmetry/asymmetry of the refractive indices in the two waveguides.
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