100km BOTDA temperature sensor with sub-meter resolution

Xabier Angulo-Vinuesa; Sonia Martin-Lopez; Pedro Corredera; Miguel Gonzalez-Herraez

doi:10.1117/12.974934

17 October 2012 100km BOTDA temperature sensor with sub-meter resolution

Xabier Angulo-Vinuesa, Sonia Martin-Lopez, Pedro Corredera, Miguel Gonzalez-Herraez

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842117 (2012) https://doi.org/10.1117/12.974934
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

Temperature or strain sensing in long-range (> 70 km) Brillouin Optical Time Domain Analysis (BOTDA) below 2 meter resolution cannot be trivially achieved due to numerous matters such as fiber attenuation, self-phase modulation, depletion, resolution-uncertainty trade-offs, etc. In this paper we show that combining Raman assistance and the Differential Pulse-width Pair (DPP) technique sub-metrical resolution is achievable in a BOTDA over 100 km sensing range. We successfully demonstrate the detection of a 0.5 meter hot-spot in the position of worst contrast along the fiber.

Citation Download Citation

Xabier Angulo-Vinuesa, Sonia Martin-Lopez, Pedro Corredera, and Miguel Gonzalez-Herraez "100km BOTDA temperature sensor with sub-meter resolution", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842117 (17 October 2012); https://doi.org/10.1117/12.974934

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