Reaching the ultimate performance limit given by non-local effects in BOTDA sensors

Alejandro Dominguez-Lopez; Zhisheng Yang; Marcelo A. Soto; Xabier Angulo-Vinuesa; S. Martin-Lopez; Luc Thevenaz; Miguel Gonzalez-Herraez

doi:10.1117/12.2205440

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28 September 2015 Reaching the ultimate performance limit given by non-local effects in BOTDA sensors

Alejandro Dominguez-Lopez, Zhisheng Yang, Marcelo A. Soto, Xabier Angulo-Vinuesa, S. Martin-Lopez, Luc Thevenaz, Miguel Gonzalez-Herraez

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Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96342E (2015) https://doi.org/10.1117/12.2205440
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

Non-local effects have been traditionally identified as one of the most limiting factors of the performance of Brillouin optical time-domain analyzers. These phenomena, directly linked with the energy gained/lost by the pump pulse, limit the probe power and ultimately the SNR of the system. Several solutions have been proposed, although none offers the possibility to increase the probe power until its limit, the onset of amplified spontaneous Brillouin scattering. In this work, we propose a technique that avoids non-local effects and permits to set the probe power at its maximum, reaching a 100 km sensing distance with 2 meter resolution.

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Alejandro Dominguez-Lopez, Zhisheng Yang, Marcelo A. Soto, Xabier Angulo-Vinuesa, S. Martin-Lopez, Luc Thevenaz, and Miguel Gonzalez-Herraez "Reaching the ultimate performance limit given by non-local effects in BOTDA sensors", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96342E (28 September 2015); https://doi.org/10.1117/12.2205440

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