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Type: 
Conference
Description: 
In this paper we propose the use of optimized bi-directional distributed Raman amplification to enhance the operating range of Brillouin optical time-domain analysis (BOTDA) sensors. In particular by combining high-power fiber-Raman lasers and polarization-multiplexed Fabry-Pérot lasers operating at 1450 nm with low relative-intensity-noise (RIN), we demonstrate distributed sensing (using first-order Raman amplification) 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: 
International Society for Optics and Photonics
Publication date: 
17 May 2011
Authors: 

Marcelo A Soto, Stefano Faralli, Mohammad Taki, Gabriele Bolognini, Fabrizio Di Pasquale

Biblio References: 
Volume: 7753 Pages: 775325
Origin: 
21st International Conference on Optical Fiber Sensors