Optical sensing apparatus and method
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United States of America Patent
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Apr 17, 1984
Issued Date -
N/A
app pub date -
May 13, 1982
filing date -
Feb 1, 1980
priority date (Note) -
Expired
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Abstract
A sensor for measuring stress, temperature, pressure, sound, etc. comprising an optical waveguide, preferably an optical fiber waveguide, a light source which injects light into one end of the waveguide, a deformer contacting and deforming the waveguide to cause light to couple from originally excited modes to other modes, and an optical detector to detect the change in light coupling caused by deformation of the waveguide.
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