Application of the fast Fourier transform and parametric frequency estimation for the measurement of the Bragg wavelength of interferometrically interrogated fiber Bragg grating sensors

S. Diaz; Cesar Jauregui; Manuel Lopez-Amo; Jose Miguel Lopez-Higuera

doi:10.1117/12.566672

9 June 2004 Application of the fast Fourier transform and parametric frequency estimation for the measurement of the Bragg wavelength of interferometrically interrogated fiber Bragg grating sensors

S. Diaz, Cesar Jauregui, Manuel Lopez-Amo, Jose Miguel Lopez-Higuera

Author Affiliations +

Proceedings Volume 5502, Second European Workshop on Optical Fibre Sensors; (2004) https://doi.org/10.1117/12.566672
Event: Second European Workshop on Optical Fibre Sensors, 2004, Santander, Spain

Abstract

A theoretical investigation on two techniques for the interrogation of fiber Bragg gratings (FBG) is reported. We compare two methods for decoding the Bragg wavelengths of gratings: the Fast Fourier Transform (FFT) processing and a parametric frequency estimation method called MUSIC. Results demonstrate that the second technique has advantages over the first one.

Citation Download Citation

S. Diaz, Cesar Jauregui, Manuel Lopez-Amo, and Jose Miguel Lopez-Higuera "Application of the fast Fourier transform and parametric frequency estimation for the measurement of the Bragg wavelength of interferometrically interrogated fiber Bragg grating sensors", Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); https://doi.org/10.1117/12.566672

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