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从理论上研究了Ｂｒａｇｇ型声光双稳系统在分岔状态下对弱信号的放大作用，对描述该系统的差分微分方程进行的数值模拟计算表明，声光双稳系统与小信号之间存在着很强的耦合作用，在靠近分岔点处小信号的幅值被放大了２６ 倍。而且计算表明，声光双稳系统在周期２ 解区间内同样能放大小信号。
The amplifying effect of Bragg type acousto-optical bistable system on weak signal in bifurcation state is theoretically studied. The numerical simulation of the differential-differential equation describing the system shows that, between acousto-optical bistable system and small signal There is a strong coupling, the small signal near the bifurcation amplitude is amplified 26 times. And the calculation shows that the acousto-optic bistable system can also amplify the small signal in the period 2 solution interval.