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Type: 
Journal
Description: 
In this Letter, we propose the use of optical pulse coding techniques for long-range distributed sensors based on Brillouin optical time-domain analysis (BOTDA). Compared to conventional BOTDA sensors, optical coding provides a significant sensing-range enhancement, allowing for temperature and strain measurements with 1 m spatial resolution over 50 km of standard single-mode fiber, with an accuracy of 2.2°C/44 με, respectively.
Publisher: 
Optical Society of America
Publication date: 
15 Jan 2010
Authors: 

Marcelo A Soto, Gabriele Bolognini, Fabrizio Di Pasquale, Luc Thévenaz

Biblio References: 
Volume: 35 Issue: 2 Pages: 259-261
Origin: 
Optics letters