【摘要】 本文阐述了严格耦合波理论的基本思想。针对横电波的情况，详细分析了运用严格耦合波理论实现光栅衍射效率计算的方法，并且进一步给出了编制计算衍射效率程序的步骤。通过一个具体计算实例表明：各衍射级分布的光能量之和等于入射光的能量，满足能量守恒定律，从而证实了计算结果的正确性。更多还原

【Abstract】 : The basic concept and formulae of the rigorous coupledwave theory are given. The method of using the theory to compute the diffraction efficiency of a planar grating is described in detail, and the procedure of programming discussed. A numerical example shows that the computed results of energy distribution of all diffration orders satisfy the law of energy conservation, which demostrates the correctness of our calculation.更多还原