通过传输矩阵法, 理论研究了损耗型单负材料双层结构在不同入射角时的反射率和偏振度。结果表明, 损耗型单负材料双层结构不同于常规介电材料, 随着入射角的增大, p分量反射率比s分量的反射率大。随着损耗(电损耗和磁损耗)的增大, p波的反射率和s波的反射率差异减小, 直到重合, 偏振度变为0。对于损耗型单负材料双层结构, 当MNG层厚度增大时, 偏振度变化幅度减小; 而当ENG层厚度增大时, 偏振度变化幅度增大。

The reflectance and degree of polarization in the loss single negative bilayer were investigated by transfer matrix method. It is found that the angle dependent reflectance of p waves is larger than that of s wave, which is contrary to the usual material with both positive epsilon and mu. With the increasing of loss (electric loss and magnetic loss), the difference of Rp and Rs decreases, and the polarization degree is 0. The increasing of the thickness of MNG layer makes the dip in P shallow, while the increasing of the thickness of ENG layer makes the dip in P deep.