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Proceedings Paper

A Wavelength Encoded Fiber Optic Position Sensor
Author(s): D. H. Crowne; D. R. Patriquin; W. B. Spillman
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Paper Abstract

A fiber optic position sensor suitable for use in hazardous environments is described. The sensing element is a diffraction grating having a linear variation in period over its length. When illuminated with a broadband optical source at a fixed angle of incidence, linear translation of the grating causes a linear shift in the wavelength of the detected signal collected at a fixed angle. Maximum error of 0.1% over a range of 25 mm has been demonstrated. The sensor is compared to traditional linear position sensors.

Paper Details

Date Published: 13 February 1990
PDF: 11 pages
Proc. SPIE 1169, Fiber Optic and Laser Sensors VII, (13 February 1990); doi: 10.1117/12.963063
Show Author Affiliations
D. H. Crowne, Hercules Aerospace Company (United States)
D. R. Patriquin, Hercules Aerospace Company (United States)
W. B. Spillman, Hercules Aerospace Company (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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