作　　者： ; ; ;

机构地区： 华南师范大学物理与电信工程学院

出　　处： 《半导体光电》 2012年第4期511-514,519,共5页

摘　　要： 根据微波传输线理论,结合集总元件构造的复合左/右手传输线,分别实现了负介电常数材料和负磁导率材料,并进一步制作了由这两种单负材料交替组成的一维光子晶体。仿真与测量结果显示,该光子晶体结构可产生零有效相位带隙。若结构参数能同时满足阻抗匹配条件和相位匹配条件,零有效相位带隙将消失。若两个匹配条件无法同时被满足,零有效相位带隙将始终存在,带隙中心处在阻抗匹配频率。此外,在阻抗匹配频率处,若结构参数偏离相位匹配条件越大,零有效相位带隙将越宽且越深,通过此规律可实现对带隙的调制。 According to the theory of microwave transmission line, the permittivity-negative and permeability-negative materials were realized and then one-dimensional photonic crystals constituted by alternating single-negative materials were fabricated by using composite right/left handed transmission lines with lumped elements. Simulation and measurement results show that such photonic crystals may produce zero-effective-phase （zero-Фeff） gap. When the structure parameters satisfy both impedance-match and phase-match conditions simultaneously, the zero- Фeff gap closes. When the two matching conditions cannot be satisfied at the same time, the zero- Фeff gap always exists and its center locates at the central frequency. Furthermore, at the impedance-match frequency, the greater the phase-match condition deviates from being satisfied, the bigger and wider the zero-Фeff gap will be. Such properties can be used to control to the zero- Фeff. gap.

关 键 词： 光子晶体 特异性材料 单负材料 零有效相位带隙 相位匹配

领　　域： [机械工程] [理学] [理学]