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Proceedings Paper

Fabry-Perot sensor with digital signal processing for the measurement of magnetostriction
Author(s): Johan Meyer; Pieter L. Swart
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Paper Abstract

Fabry-Perot interferometers have attractive features for use in fiber optic sensors. However, they suffer from undesirable amplitude modulation introduced as a result of coupling losses due to mirror absorption, mirror tilt, curvature of the fiber end-face, fiber mirror separation and splice losses. In addition, non-linearities of high finesse Fabry-Perot interferometers require special readout techniques. A method using digital signal processing is proposed which is able to solve the problems caused by the non-linearities, the directional ambiguities and the coupling losses. This method is demonstrated by using a fiber optic Fabry-Perot interferometer for the measurement of magnetostriction.

Paper Details

Date Published: 5 March 1993
PDF: 11 pages
Proc. SPIE 1795, Fiber Optic and Laser Sensors X, (5 March 1993); doi: 10.1117/12.141238
Show Author Affiliations
Johan Meyer, Rand Afrikaans Univ. (South Africa)
Pieter L. Swart, Rand Afrikaans Univ. (South Africa)

Published in SPIE Proceedings Vol. 1795:
Fiber Optic and Laser Sensors X
Eric Udd; Ramon P. DePaula, Editor(s)

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