Demodulation of serial fibre Bragg grating sensor arrays by Fourier transform spectroscopy using an over-moded laser reference

Kieran T. O'Mahoney; Donal A. Flavin; Lin Zhang; Ian Bennion

doi:10.1117/12.623281

23 May 2005 Demodulation of serial fibre Bragg grating sensor arrays by Fourier transform spectroscopy using an over-moded laser reference

Kieran T. O'Mahoney, Donal A. Flavin, Lin Zhang, Ian Bennion

Author Affiliations +

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.623281
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

Abstract

We report a Fourier Transform Spectroscopy scheme for the simultaneous demodulation of a Bragg grating sensor array and the measurement of the intra-grating spectral structure of the individual gratings of the array, based on referencing to a transversely multimode laser. The performance for this reference, relative to that of a single-mode reference, is evaluated in the context of coherence effects, temperature sensing, and high-resolution intra-grating spectral measurement. The results indicate the potential for grating demodulation across the full spectrum of the E, S, C and L optical telecommunications bands.

Citation Download Citation

Kieran T. O'Mahoney, Donal A. Flavin, Lin Zhang, and Ian Bennion "Demodulation of serial fibre Bragg grating sensor arrays by Fourier transform spectroscopy using an over-moded laser reference", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.623281

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