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Proceedings Paper

Al-doped optical fiber to enhance strain sensitivity of Brillouin based optical fiber sensors
Author(s): Y. Sikali Mamdem; F. Taillade; Y. Jaouën; R. Gabet; G. Moreau; A. Faustov; G. Pilorget; S. Delepine-Lesoille
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Paper Abstract

In order to meet application requirements, dependence of the Brillouin frequency shift to strain should be enhanced. We evaluated the influence of several optical fiber dopants on Brillouin scattering strain sensitivity. Based on a FEM-2D modeling, we developed a model for Brillouin gain spectrum and its strain sensitivity. Geometrical profile, doping composition and drawing conditions are taken into account. We show alumina is a very interesting dopant to enhance strain sensitivity in optical fibers. This result is experimentally validated: up to 0.0639MHz/μƐ is obtained with a 5.2mol% Al2O3 doped fiber. We expect to reach 0.1MHz/μƐ with 25mol% doping level.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915730 (2 June 2014); doi: 10.1117/12.2059535
Show Author Affiliations
Y. Sikali Mamdem, EDF Recherche & Développement (France)
F. Taillade, EDF Recherche & Développement (France)
Univ. Paris Est (France)
Y. Jaouën, Télécom ParisTech (France)
R. Gabet, Télécom ParisTech (France)
G. Moreau, EDF Recherche & Développement (France)
A. Faustov, SCK CEN (Belgium)
G. Pilorget, ANDRA (France)
S. Delepine-Lesoille, ANDRA (France)

Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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