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Proceedings Paper

Design and performance of a mechanical strain optical sensor using a multimode fiber locally stressed by a periodical micrometric perturbation
Author(s): Anthony Bichler; Bruno Serio; Sylvain Lecler; Sylvain Fischer
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Paper Abstract

We present a new kind of intrinsic intensity modulation optical fiber sensor. The sensitive effect is obtained by a mechanical perturbation of the fiber at the micrometric scale. The fiber diameter and the refractive indices are locally modified. The principle of this sensor is a losses modulation in this perturbed zone of the fiber due to different physical effects like thermo-optic or elasto-optic effects. The perturbation is obtained by clipping the fiber in two microstructured jaws. Mechanical and electromagnetic simulations are used to predict the response of the sensor. A strain test on the sensor is compared to the modeling.

Paper Details

Date Published: 13 May 2010
PDF: 7 pages
Proc. SPIE 7726, Optical Sensing and Detection, 77262B (13 May 2010); doi: 10.1117/12.854955
Show Author Affiliations
Anthony Bichler, Phosylab SAS (France)
Univ. de Strasbourg (France)
Bruno Serio, Univ. de Strasbourg (France)
Sylvain Lecler, Univ. de Strasbourg (France)
Sylvain Fischer, Phosylab SAS (France)

Published in SPIE Proceedings Vol. 7726:
Optical Sensing and Detection
Francis Berghmans; Anna Grazia Mignani; Chris A. van Hoof, Editor(s)

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