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Proceedings Paper

Simultaneous strain and refractive index sensor based on a TFBG
Author(s): Nélia J. Alberto; Carlos A. Marques; João L. Pinto; Rogério N. Nogueira
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Paper Abstract

°In this work, a dual sensor for simultaneous measurements of strain and refractive index (RI) is proposed. The sensor is based on a 4.5 tilted fibre Bragg grating (TFBG). Using two different demodulating techniques, namely monitoring the core mode wavelength and the normalized area of the transmission spectrum, it is possible to measure, strain and RI with a resolution of 2.5 με and 3 x 10-5, respectively.

Paper Details

Date Published: 8 September 2010
PDF: 4 pages
Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 765324 (8 September 2010); doi: 10.1117/12.866344
Show Author Affiliations
Nélia J. Alberto, Univ. de Aveiro (Portugal)
Carlos A. Marques, Instituto de Telecomunicações (Portugal)
João L. Pinto, Univ. de Aveiro (Portugal)
Rogério N. Nogueira, Instituto de Telecomunicações (Portugal)


Published in SPIE Proceedings Vol. 7653:
Fourth European Workshop on Optical Fibre Sensors
José Luís Santos; Brian Culshaw; José Miguel López-Higuera; William N. MacPherson, Editor(s)

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