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Proceedings Paper

Simultaneous bend and temperature sensor using tilted FBG
Author(s): C. Caucheteur; K. Chah; F. Lhomme; M. Blondel; Patrice Megret
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Paper Abstract

We propose a simple, very reliable and fast optical sensor based on a tilted fiber Bragg grating for the simultaneous measurement of temperature and macro bending. The transmitted spectrum of a tilted Bragg grating is composed of numerous discrete dips which have two distinct origins: the dip at the longest wavelength comes from the self coupling of the core mode while the others are due to the backward coupling with the cladding modes. We apply a different demodulation technique to each of these two contributions in order to realize a dual sensor. This sensor allows the detection of small curvatures and provides a good accuracy.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.623421
Show Author Affiliations
C. Caucheteur, Faculte Polytechnique de Mons (Belgium)
K. Chah, Faculte Polytechnique de Mons (Belgium)
F. Lhomme, Faculte Polytechnique de Mons (Belgium)
M. Blondel, Faculte Polytechnique de Mons (Belgium)
Patrice Megret, Faculte Polytechnique de Mons (Belgium)

Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors
Marc Voet; Reinhardt Willsch; Wolfgang Ecke; Julian Jones; Brian Culshaw, Editor(s)

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