Share Email Print
cover

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
Format Member Price Non-Member Price
PDF $17.00 $21.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

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)

© SPIE. Terms of Use
Back to Top