Double-pulse Brillouin distributed optical fiber sensors: analytical model and experimental validation

Marcelo A. Soto; Sanghoon Chin; Luc Thévenaz

doi:10.1117/12.974964

17 October 2012 Double-pulse Brillouin distributed optical fiber sensors: analytical model and experimental validation

Marcelo A. Soto, Sanghoon Chin, Luc Thévenaz

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842124 (2012) https://doi.org/10.1117/12.974964
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

An analytical model is presented to describe the behavior of the acoustic wave, probe signal and Brillouin gain in double-pulse Brillouin optical time-domain analysis (DP-BOTDA) sensors. The proposed model is a tool that provides a full physical insight into the Brillouin interaction occurring in this double-pulse configuration, and allows the optimization and complete analysis of the system. The proposed solution is experimentally validated in a long-range system, which is optimized to demonstrate experimentally, for the first time, the capability of DP-BOTDA to achieve a 11 km sensing distance with 20 cm spatial resolution and a frequency resolution of 0.5 MHz.

Citation Download Citation

Marcelo A. Soto, Sanghoon Chin, and Luc Thévenaz "Double-pulse Brillouin distributed optical fiber sensors: analytical model and experimental validation", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842124 (17 October 2012); https://doi.org/10.1117/12.974964

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