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19 May 2011Distributed optical fiber temperature sensor using only anti-Stokes Raman scattering light in a loop configuration
In this paper we demonstrate distributed Raman temperature sensing (RDTS) in a loop scheme employing anti-Stokes
light intensity only. Using a single-channel receiver and anti-Stokes traces measured in loop configuration, we
implement RDTS with inherent compensation of fiber wavelength-dependent losses, as well as local external
perturbations. Experimental results show a signal-to-noise ratio enhancement with respect to a standard RDTS in loop
configuration, providing a robust and reliable high-performance sensor for long sensing ranges.
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Marcelo A. Soto, Alessandro Signorini, Tiziano Nannipieri, Stefano Faralli, Gabriele Bolognini, Fabrizio Di Pasquale, "Distributed optical fiber temperature sensor using only anti-Stokes Raman scattering light in a loop configuration," Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77539U (19 May 2011); https://doi.org/10.1117/12.886031