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Proceedings Paper

Double-pulse Brillouin distributed optical fiber sensors: analytical model and experimental validation
Author(s): Marcelo A. Soto; Sanghoon Chin; Luc Thévenaz
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Paper 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.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842124 (17 October 2012); doi: 10.1117/12.974964
Show Author Affiliations
Marcelo A. Soto, Swiss Federal Institute of Technology (Switzerland)
Sanghoon Chin, Omnisens SA (Switzerland)
Luc Thévenaz, Swiss Federal Institute of Technology (Switzerland)

Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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