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

M. Durán Sánchez; R. I. Álvarez Tamayo; O. Pottiez; E. A. Kuzin; B. Ibarra-Escamilla; A. Barcelata Pinzón

doi:10.1117/12.2050781

18 June 2014 Fiber laser strain sensor based in the measurement of a Sagnac interferometer optical power spectrum

M. Durán Sánchez, R. I. Álvarez Tamayo, O. Pottiez, E. A. Kuzin, B. Ibarra-Escamilla, A. Barcelata Pinzón

Proceedings Volume 9098, Fiber Optic Sensors and Applications XI; 909817 (2014) https://doi.org/10.1117/12.2050781
Event: SPIE Sensing Technology + Applications, 2014, Baltimore, MD, United States

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.

Citation Download Citation

M. Durán Sánchez, R. I. Álvarez Tamayo, O. Pottiez, E. A. Kuzin, B. Ibarra-Escamilla, and A. Barcelata Pinzón "Fiber laser strain sensor based in the measurement of a Sagnac interferometer optical power spectrum", Proc. SPIE 9098, Fiber Optic Sensors and Applications XI, 909817 (18 June 2014); https://doi.org/10.1117/12.2050781

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