BOTDA sensor with 2-m spatial resolution over 120 km distance using bi-directional distributed Raman amplification

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

doi:10.1117/12.884979

17 May 2011 BOTDA sensor with 2-m spatial resolution over 120 km distance using bi-directional distributed Raman amplification

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

Author Affiliations +

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 775325 (2011) https://doi.org/10.1117/12.884979
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

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, Marcelo A. Soto, Stefano Faralli, Stefano Faralli, Mohammad Taki, Mohammad Taki, Gabriele Bolognini, Gabriele Bolognini, Fabrizio Di Pasquale, 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); doi: 10.1117/12.884979; https://doi.org/10.1117/12.884979

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