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Proceedings Paper

Three parameters simultaneous measurement with a single TFBG
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Paper Abstract

A sensor for simultaneous measurements of strain, temperature and refractive index (RI) is proposed. The device is based on a single 8º tilted fiber Bragg grating (TFBG). Monitoring the core mode and ghost mode wavelength, it is possible to discriminate strain and temperature. The RI measurement is obtained through computation of the transmission spectrum area. Resolutions up to 4 με, 3.1 ºC and 5.7 x10-4 were achieved. The present sensor can be an important tool in the sensing field.

Paper Details

Date Published: 18 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77537Z (18 May 2011); doi: 10.1117/12.885117
Show Author Affiliations
Nélia J. Alberto, Univ. de Aveiro (Portugal)
Carlos A. Marques, Univ. de Aveiro (Portugal)
Paulo F. Antunes, Univ. de Aveiro (Portugal)
João L. Pinto, Univ. de Aveiro (Portugal)
Rogério N. Nogueira, Instituto de Telecomunicações (Portugal)


Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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