Fiber optic temperature sensor
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United States of America Patent
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-
Oct 31, 2000
Issued Date -
N/A
app pub date -
Oct 6, 1998
filing date -
Jan 29, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A fiber optic temperature sensor uses a light source which transmits light through an optical fiber to a sensor head at the opposite end of the optical fiber from the light source. The sensor head has a housing coupled to the end of the optical fiber. A metallic reflective surface is coupled to the housing adjacent the end of the optical fiber to form a gap having a predetermined length between the reflective surface and the optical fiber. A detection system is also coupled to the optical fiber which determines the temperature at the sensor head from an interference pattern of light which is reflected from the reflective surface.
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