Simultaneous strain and refractive index sensor based on a TFBG

Nélia J. Alberto; Carlos A. Marques; João L. Pinto; Rogério N. Nogueira

doi:10.1117/12.866344

8 September 2010 Simultaneous strain and refractive index sensor based on a TFBG

Nélia J. Alberto, Carlos A. Marques, João L. Pinto, Rogério N. Nogueira

Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 765324 (2010) https://doi.org/10.1117/12.866344
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal

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.

Citation Download Citation

Nélia J. Alberto, Carlos A. Marques, João L. Pinto, and Rogério N. Nogueira "Simultaneous strain and refractive index sensor based on a TFBG", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 765324 (8 September 2010); https://doi.org/10.1117/12.866344

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