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Proceedings Paper

Simple, Repeatable, Fiber-Optic Intensity Sensor For Temperature Measurement
Author(s): J. W. Berthold; S. E. Reed; R. G. Sarkis
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Paper Abstract

We have demonstrated the performance of a fiber-optic intensity sensor for temperature measurement. The method measures the change in absorption with the temperature of light reflected from a thin silicon film deposited on the end of an optical fiber. Our single-ended sensing approach requires that the incident light intensity be reflected from both film surfaces and that these reflected signals re-enter the fiber. Simplifications in sensor fabrication have been shown to yield sensitivity comparable to that reported by other authors. Calibration data on the sensor is presented up to 400°C. Potential applications of the method are discussed.

Paper Details

Date Published: 13 February 1990
PDF: 9 pages
Proc. SPIE 1169, Fiber Optic and Laser Sensors VII, (13 February 1990); doi: 10.1117/12.963070
Show Author Affiliations
J. W. Berthold, The Babcock & Wilcox Co. (United States)
S. E. Reed, The Babcock & Wilcox Co. (United States)
R. G. Sarkis, The Babcock & Wilcox Co. (United States)


Published in SPIE Proceedings Vol. 1169:
Fiber Optic and Laser Sensors VII
Ramon P. DePaula; Eric Udd, Editor(s)

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