阐述了波前相位复用技术记录和再现体全息光栅的原理；运用波耦合理论，从衍射波的一阶微分方程推导出多重体光栅对随机波前相位的选择性衍射；构造了一个复随机过程函数，并利用其相关函数得到了随机波前相位编码体光栅实现无串扰再现的充分必要条件；给出了理论上分析多重体光栅对随机波前相位选择性衍射的一种方法．

The principle of recording and reconstructing volume gratings with front phase encoding was expounded. The diffraction selectivity of superimposed volume gratings,utilizing the coupled wave theory,is deduced from the first order differential equation of diffracted wave. A complex stochastic process function is proposed,with whose correlation function,the necessary and sufficient condition of random wave front phase encoding volume gratings reconstructing without crosstalk is obtained. A diffraction selectivity theoretical analysis method of volume gratings with wave front phase encoding is proposed.