26 February 2013 Dynamics of ultra-long Brillouin fiber laser
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Abstract
We report on experimental studies of random lasing realized in optical fibers with the use of Brillouin amplification and Rayleigh backscattering employed as a distributed feedback instead of a cavity mirror. In our experiment 25-km-long high quality standard telecom single-mode fiber was employed for Rayleigh reflection uniformly distributed over all fiber length. We have observed a clear competition between a classical Brillouin scattering and Brillouin lasing. Presence of extended fluctuation-free fragments in the recorded oscilloscope traces highlights Stokes power statistics typical for laser radiation rather than for Brillouin process. The results of the experiments are in a perfect agreement with the model of Brillouin - Rayleigh cooperative process in long fibers.
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Andrei A. Fotiadi, Andrei A. Fotiadi, Ivan Lobach, Ivan Lobach, Patrice Mégret, Patrice Mégret, } "Dynamics of ultra-long Brillouin fiber laser", Proc. SPIE 8601, Fiber Lasers X: Technology, Systems, and Applications, 86011K (26 February 2013); doi: 10.1117/12.2003186; https://doi.org/10.1117/12.2003186
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