Use of Fabry-Pérot lasers for simultaneous distributed strain and temperature sensing based on hybrid Raman and Brillouin scattering

Marcelo A. Soto; Gabriele Bolognini; Fabrizio Di Pasquale

doi:10.1117/12.834952

5 October 2009 Use of Fabry-Pérot lasers for simultaneous distributed strain and temperature sensing based on hybrid Raman and Brillouin scattering

Marcelo A. Soto, Gabriele Bolognini, Fabrizio Di Pasquale

Author Affiliations +

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 750328 (2009) https://doi.org/10.1117/12.834952
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

In this paper we propose the use of multi-longitudinal mode lasers, such as Fabry-Pérot (FP) lasers, for simultaneous distributed strain and temperature sensing based on hybrid Brillouin and Raman scattering. Fabry-Pérot lasers allow for high-power Raman intensity measurement and the simultaneous detection of the Brillouin frequency shift parameter for all FP longitudinal modes, by using a self-heterodyne detection scheme based on a multi-wavelength optical local oscillator. Experiments point out significant improvement in hybrid sensor performance, also suggesting further potential benefits when combining the use of FP lasers with optical coding techniques and/or optical amplification.

Citation Download Citation

Marcelo A. Soto, Gabriele Bolognini, and Fabrizio Di Pasquale "Use of Fabry-Pérot lasers for simultaneous distributed strain and temperature sensing based on hybrid Raman and Brillouin scattering", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 750328 (5 October 2009); https://doi.org/10.1117/12.834952

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