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A Cost-Effective Edge-Filter Based FBG Interrogator Using Catastrophic Fuse Effect Micro-cavity Interferometers

Rodriguez, C. ; Marques, C. ; Domingues, M. F. ; R. N. Ribeiro, M. R. N. Ribeiro ; Frizera-Neto, A. Frizera-Neto ; Pontes, M. J. ; André, P.S ; Antunes, P.

Measurement Journal Vol. 124, Nº C, pp. 486 - 493, August, 2018.

ISSN (print): 0263-2241
ISSN (online): 0263-2241

Journal Impact Factor: 2,359 (in 2016)

Digital Object Identifier: 10.1016/j.measurement.2018.03.067

Abstract
This paper proposed an inexpensive high contrast in-line micro-cavity interferometer for edge-filter strain and temperature interrogation of a fiber Bragg grating sensor. The simulation model is presented in order to describe the sensor behavior which strongly agrees with the experimental results with a mean error lower than 0.04%. The results show evidences of high repeatability and stability achieved in measurements of strain and temperature from 0-1440 µStrain and 5ºC to 50ºC, respectively.