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Type: 
Journal
Description: 
In this paper we perform an optimization of Brillouin optical time-domain analysis (BOTDA) sensors for achieving high resolution over long sensing ranges using distributed Raman amplification. By employing an optimized first-order bi-directional Raman amplification scheme and combining high-power fiber-Raman lasers and Fabry-Pérot lasers with low relative-intensity-noise (RIN), we demonstrate distributed sensing over 120 km of standard single-mode fiber with 2 meter spatial resolution and with a strain/temperature accuracy of 45με/2.1°C respectively.
Publisher: 
Optical Society of America
Publication date: 
28 Feb 2011
Authors: 

Marcelo A Soto, Gabriele Bolognini, Fabrizio Di Pasquale

Biblio References: 
Volume: 19 Issue: 5 Pages: 4444-4457
Origin: 
Optics express