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Proceedings Paper

Vision system to analyze interferometric patterns: application to fiber optic sensors
Author(s): J. A. Jiménez; A. Rodríguez; F. J. González; L. M. Gutiérrez
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Paper Abstract

We present the results of the analysis and signal processing in real time of interferometric patterns produced by a Mach-Zehnder interferometric Fiber-Optic temperature sensor. The variations in temperature are seen as the displacement of the concentric rings that conform the interference pattern. The vision system allows us to get interferometric patterns by means of a CCD camera. This image is treated in real time by a program developed in Visual C++. This program allows us to determine the temperature of the sensor. To accomplish this task the displaced rings of interference pattern are counted with respect to a fixed point. The results of the analysis are used in the characterization and optimization of the sensor. The implemented system and the results of the analysis can be applied to other sensors or integrated optic devices based on phase modulation.

Paper Details

Date Published: 10 February 2006
PDF: 7 pages
Proc. SPIE 6046, Fifth Symposium Optics in Industry, 60462A (10 February 2006); doi: 10.1117/12.674625
Show Author Affiliations
J. A. Jiménez, Univ. Autónoma de San Luis Potosi (Mexico)
A. Rodríguez, Univ. Autónoma de San Luis Potosi (Mexico)
F. J. González, Univ. Autónoma de San Luis Potosi (Mexico)
L. M. Gutiérrez, Univ. Autónoma de San Luis Potosi (Mexico)

Published in SPIE Proceedings Vol. 6046:
Fifth Symposium Optics in Industry
Eric Rosas; Rocío Cardoso; Juan C. Bermudez; Oracio Barbosa-García, Editor(s)

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