CHAOTIC STIMULATED BRILLOUIN-SCATTERING - THEORY AND EXPERIMENT

We report our recent experimental observation and theoretical analysis of nonlinear dynamics in stimulated Brillouin scattering (SBS) genera ted in single mode fibre in the presence of weak external feedback. Bo th experiment and theory establish that the noise, which initiates thi s process and dominates the emission near the SBS threshold, is dramat ically suppressed from the onset of SBS emission, giving rise to vario us highly deterministic dynamical features. Further in this analysis m e identify the critical role of nonlinear refraction on the nonlinear dynamical behaviour.