The Brillouin gain and experiment performance based on stimulated Brillouin scattering slow light

摘要

Slow light is generated via the gain mechanisms of stimulated stimulated Brillouin scattering. The slow light is characterized in terms of Brillouin threshold, gain spectrum, Brillouin frequency shift by using optical heterodyne detection. According to the measured Brillouin frequency shift, we set our signal frequency in the gain region by manual matching method, and the gain bandwidth is broadened to 450MHz using a phrase-modulated pump. As a result of a delay of 32ns is achieved for the 500ns input signal when the gain is 15dB.