半导体光电, 2012, 33 (4): 511, 网络出版: 2012-09-04
单负材料构成光子晶体零有效相位带隙的研究
Investigation of Zeroeffectivephase Gap in Photonic Crystals Consisting of Singlenegative Materials
光子晶体 特异性材料 单负材料 零有效相位带隙 相位匹配 photonic crystal metamaterials singlenegative material zeroeffectivephase bandgap phase matching
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。
Abstract
According to the theory of microwave transmission line, the permittivitynegative and permeabilitynegative materials were realized and then onedimensional photonic crystals constituted by alternating singlenegative 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 zeroeffectivephase (zeroφeff) gap. When the structure parameters satisfy both impedancematch and phasematch conditions simultaneously, the zeroφeff gap closes. When the two matching conditions cannot be satisfied at the same time, the zeroφeff gap always exists and its center locates at the central frequency. Furthermore, at the impedancematch frequency, the greater the phasematch condition deviates from being satisfied, the bigger and wider the zeroφeff gap will be. Such properties can be used to control to the zeroφeff gap.
王星罡, 唐志列, 陈溢杭. 单负材料构成光子晶体零有效相位带隙的研究[J]. 半导体光电, 2012, 33(4): 511. WANG Xinggang, TANG Zhilie, CHEN Yihang. Investigation of Zeroeffectivephase Gap in Photonic Crystals Consisting of Singlenegative Materials[J]. Semiconductor Optoelectronics, 2012, 33(4): 511.