Three parameters simultaneous measurement with a single TFBG

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

doi:10.1117/12.885117

18 May 2011 Three parameters simultaneous measurement with a single TFBG

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

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77537Z (2011) https://doi.org/10.1117/12.885117
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

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.

Citation Download Citation

Nélia J. Alberto, Carlos A. Marques, Paulo F. Antunes, João L. Pinto, and Rogério N. Nogueira "Three parameters simultaneous measurement with a single TFBG", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77537Z (18 May 2011); https://doi.org/10.1117/12.885117

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