二元相位光栅抗反射特性的耦合波分析

Coupled-Wave Analysis of Anti-reflective Properties of Binary Phase Grating

运用Ｍａｘｗｅｌｌ方程组和电磁场的边界连续条件，本文导出了二元相位光栅的严格的耦合波方程，分析了二元相位光栅的抗反射特性。在适当选取光栅的几何参数时，光栅的反射率可以减至几乎为零。实验测试结果与理论值基本相符。

Using Maxwell's equations and boundary continuity of electromagnetic fields,this paper derives rigorous coupled-Wave equations of binary phase gratings,and analyzes anti-reflective properties of the binary phase gratings.It shows that the gratings have zero reflectivity when geometric parameters of the grating are chosen properly.Experimental results conform to theoretical values.