A cost-effective edge-filter-based FBG strain interrogator using catastrophic fuse effect microcavity interferometers

Camilo A. R. Díaz; Carlos A. F. Marques; M. Fátima F. Domingues; Moisés R. N. Ribeiro; Anselmo Frizera Neto; Maria J. Pontes; Paulo S. André; Paulo F. C. Antunes

doi:10.1117/12.2291042

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22 February 2018 A cost-effective edge-filter-based FBG strain interrogator using catastrophic fuse effect microcavity interferometers

Camilo A. R. Díaz, Carlos A. F. Marques, M. Fátima F. Domingues, Moisés R. N. Ribeiro, Anselmo Frizera Neto, Maria J. Pontes, Paulo S. André, Paulo F. C. Antunes

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Proceedings Volume 10528, Optical Components and Materials XV; 105281W (2018) https://doi.org/10.1117/12.2291042
Event: SPIE OPTO, 2018, San Francisco, California, United States

Abstract

This paper presents a simple, compact, stable and inexpensive in-line solution based on catastrophic fuse effect micro-cavity interferometers for edge-filter strain interrogation of a fiber Bragg grating sensor. By using a commercial spliced machine and recycling damage fiber for the catastrophic fuse effect it is possible to construct a micro-cavity with high contrast of more than 20dB, and acceptable half free spectra range (FSR) around 13nm of interrogation range. The strain from 0 to 1440μStrain of the FBG sensor is measured with evidences of high repeatability and stability. Future work will investigate the use of the proposed method for applications requiring higher interrogation rates.

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Camilo A. R. Díaz, Carlos A. F. Marques, M. Fátima F. Domingues, Moisés R. N. Ribeiro, Anselmo Frizera Neto, Maria J. Pontes, Paulo S. André, and Paulo F. C. Antunes "A cost-effective edge-filter-based FBG strain interrogator using catastrophic fuse effect microcavity interferometers", Proc. SPIE 10528, Optical Components and Materials XV, 105281W (22 February 2018); https://doi.org/10.1117/12.2291042

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