Fabry-Perot sensor with digital signal processing for the measurement of magnetostriction

Johan Meyer; Pieter L. Swart

doi:10.1117/12.141238

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5 March 1993 Fabry-Perot sensor with digital signal processing for the measurement of magnetostriction

Johan Meyer, Pieter L. Swart

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Proceedings Volume 1795, Fiber Optic and Laser Sensors X; (1993) https://doi.org/10.1117/12.141238
Event: Fibers '92, 1992, Boston, MA, United States

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.

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Johan Meyer and Pieter L. Swart "Fabry-Perot sensor with digital signal processing for the measurement of magnetostriction", Proc. SPIE 1795, Fiber Optic and Laser Sensors X, (5 March 1993); https://doi.org/10.1117/12.141238

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