作　　者： ; ;

机构地区： 华南师范大学物理与电信工程学院

出　　处： 《光子学报》 2009年第3期576-580,共5页

摘　　要： 分析了含单负材料的光量子阱结构中的振荡透射模的性质.用两种单负(负介电常量或负磁导率)材料交替周期堆叠形成的两个光子晶体构造了一维光量子阱结构,该结构中仅其中一个光子晶体含有零有效位相带隙.数值计算结果发现,在零有效位相带隙内存在振荡透射模.通过改变井区域光子晶体内单负材料层的厚度及周期数,振荡透射模的数目、频率及频率间隔均可调节.振荡透射模对入射角度的依赖均很弱;随着入射角度的改变,缺陷模频率的相对改变量保持在0.02以下.该研究结果可用于设计多通道全向滤波器. The properties of the resonance modes in photonic quantum-well structures containing singlenegative materials were analyzed. The photonic quantum well structures consist of two Photonic Crystals （PCs） stacking with alternately single-negative-permittivity and single-negative permeability media. In the structure only one PC possesses the photonic gap with zero effective phase. The numerical results show that resonance transmission modes emerge inside the zero effective-phase gap. By adjusting the thicknesses or the period number of the single-negative material layers in the photonic well region, the number, frequencies, and frequency interval of the resonance modes can be tuned. Such resonance modes are insensitive to incident angle, and the normalized frequency shift of the resonance modes is not more than 0. 02 as the incident angle varies. The results open a promising way to fabricate omnidirectional and multiplechanneled filters.

关 键 词： 光子晶体 振荡透射模 传输矩阵 单负材料

领　　域： [机械工程] [理学] [理学]