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Proceedings Paper

Use of a grating interferometer for the demodulation of white-light interferometric sensors
Author(s): Hassan Akhouayri; Hugues Giovannini; Serge J. Huard; Michel Lequime
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Paper Abstract

In order to demodulate optical fiber interferometric sensors in the coherence multiplexing scheme it is worthwhile using static interferomers. Measurement of a physical parameter is obtained by matching the optical path difference (OPD) of each interferometric sensor with a receiver. An attractive solution consists in using grating interferometer as a demodulator. Indeed, it permits one to record correlation peaks (each one corresponding to a sensor) on a photodiode array, thus making demultiplexing easier. On the other hand, it is possible to record only the peak envelope if the grating interferometer is adjusted in a well defined configuration. In this paper we concern ourselves with the theoretical determination of the conditions needed to simplify calculations and interpretation of the experimental results.

Paper Details

Date Published: 30 November 1994
PDF: 6 pages
Proc. SPIE 2341, Interferometry '94: Interferometric Fiber Sensing, (30 November 1994); doi: 10.1117/12.195538
Show Author Affiliations
Hassan Akhouayri, Ecole Nationale Superieure de Physique de Marseille (France)
Hugues Giovannini, Ecole Nationale Superieure de Physique de Marseille (France)
Serge J. Huard, Ecole Nationale Superieure de Physique de Marseille (France)
Michel Lequime, Bertin & Cie (France)

Published in SPIE Proceedings Vol. 2341:
Interferometry '94: Interferometric Fiber Sensing
Eric Udd; Ralph P. Tatam, Editor(s)

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