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17 May 2011BOTDA sensor with 2-m spatial resolution over 120 km distance using bi-directional distributed Raman amplification
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.
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Marcelo A. Soto, Stefano Faralli, Mohammad Taki, Gabriele Bolognini, Fabrizio Di Pasquale, "BOTDA sensor with 2-m spatial resolution over 120 km distance using bi-directional distributed Raman amplification," Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775325 (17 May 2011); https://doi.org/10.1117/12.884979