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Proceedings Paper

Demodulation of a fiber Fabry-Perot strain sensor using white light interferometry
Author(s): Gary Zuliani; W. Dayle Hogg; Kexing Liu; Raymond M. Measures
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Paper Abstract

A method is demonstrated for demodulating the signal from a fiber-optic Fabry-Perot (FFP) strain gauge using white light interferometry. In particular, a Michelson interferometer with an identical path imbalance to the sensing FFP interferometer is used to recombine the sensing and reference components. Far-field interference from the Michelson interferometer, with one tilted mirror, is then projected onto a CCD camera where the fringes can be captured and analyzed on an accompanying microcomputer. The advantages of the system include the absolute measurement capability and the potential for multiprocessing.

Paper Details

Date Published: 1 December 1991
PDF: 6 pages
Proc. SPIE 1588, Fiber Optic Smart Structures and Skins IV, (1 December 1991); doi: 10.1117/12.50191
Show Author Affiliations
Gary Zuliani, Univ. of Toronto (Canada)
W. Dayle Hogg, Univ. of Toronto (Canada)
Kexing Liu, Univ. of Toronto (Canada)
Raymond M. Measures, Univ. of Toronto (Canada)

Published in SPIE Proceedings Vol. 1588:
Fiber Optic Smart Structures and Skins IV
Richard O. Claus; Eric Udd, Editor(s)

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