Variable coupler fiberoptic sensor
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United States of America Patent
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Jan 6, 1987
Grant Date -
N/A
app pub date -
Oct 17, 1984
filing date -
Oct 17, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A variable coupler fiberoptic sensor in which a fused, tapered, biconical directional fiberoptic coupler is encapsulated in a stress birefringent medium whose index of refraction changes with applied stress. The ratio of power in the output fibers of the directional coupler varies with the change of index of refraction of the encapsulating medium as stress is applied to the medium.
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