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Proceedings Paper

Fiber laser strain sensor based in the measurement of a Sagnac interferometer optical power spectrum
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Paper Abstract

In this paper a linear cavity Erbium doped fiber (EDF) laser based in a fiber Bragg grating (FBG) and a fiber optical loop mirror with a high birefringence fiber in the loop (Hi-Bi FOLM) is used as a strain sensor. The Fabry-Perot cavity is formed by the FBG and the Hi-Bi FOLM, used as a measurement system of strain variations produced on the FBG, used as a strain sensor device. Usually, fiber laser sensor experimental setups determine the measured variable magnitude by using of an optical spectrum analyzer (OSA). Hi-Bi FOLM transmission spectrum wavelength displacement by fiber loop temperature variations measurement can be an attractive application exploiting the characteristics of FOLM transmission spectrum behavior due to Hi-Bi fiber loop temperature variations to determine the FBG strain applied through the maximal optical power monitoring by simple use of a photodetector and a temperature meter.

Paper Details

Date Published: 18 June 2014
PDF: 7 pages
Proc. SPIE 9098, Fiber Optic Sensors and Applications XI, 909817 (18 June 2014); doi: 10.1117/12.2050781
Show Author Affiliations
M. Durán Sánchez, Univ. Tecnológica de Puebla (Mexico)
R. I. Álvarez Tamayo, Univ. Tecnológica de Puebla (Mexico)
O. Pottiez, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
E. A. Kuzin, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
B. Ibarra-Escamilla, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
A. Barcelata Pinzón, Univ. Tecnológica de Puebla (Mexico)

Published in SPIE Proceedings Vol. 9098:
Fiber Optic Sensors and Applications XI
Henry H. Du; Gary Pickrell; Eric Udd; Christopher S. Baldwin; Jerry J. Benterou; Anbo Wang, Editor(s)

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