Scientific Papers


Long-range distributed Brillouin fiber sensors by use of an unbalanced double sideband probe

Authors (PARTNER)

R. Bernini, A. Minardo and L. Zeni (SUN)

Name and/or number of magazine/newspaper/journal…

Optics Express, vol. 19, no. 24, pp. 23845–23856, November 2011.

DOI: 10.1364/OE.19.023845


We propose and demonstrate a long-range Brillouin Optical Time-Domain Analysis (BOTDA) distributed sensing system making use of an unbalanced double sideband probe formed by a Stokes and an anti-Stokes line. In particular, we show that for each measuring condition an optimal Stokes /anti-Stokes input power ratio exists, allowing a larger suppression of nonlocal effects induced by pump depletion. Experiments on a 50 km single-mode sensing fiber with 5 meters spatial resolution are reported.


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