Steady and relaxation oscillations of stimulated Brillouin scattering in single-mode optical fibers

Abstract

The temporal behavior of stimulated Brillouin scattering (SBS) in single-mode optical fibers is investigated theoretically and experimentally. It is shown that if external feedback exists, the SBS and the transmitted pump intensities exhibit steady oscillations with a period of twice the transit time in the fiber. However, if the ratio between the SBS intensity and the input intensity is above a certain value, the oscillations decay.