The light from LD was modulated by an AOM and amplified by a high gain EDFA to generate high power light pulse. Thus a high intensity spontaneous Brillouin scattering was achieved.

• 声光调制器将光源调制成窄脉冲 ；并由高增益光纤放大器放大 ；产生高功率光脉冲信号 ；提高了自发布里渊散射信号的强度 .