光学学报, 2012, 32 (5): 0516002, 网络出版: 2012-05-02
基于光子晶体塔姆态的带隙分裂
Photonic Band Gap Splitting Based on Optical Tamm States of Photonic Crystal
材料 光子晶体 一维光子晶体 界面态 塔姆态 materials photonic crystal one-dimensional photonic crystal interface states Tamm state
摘要
将由两个一维介质层光子晶体组成的异质结拓展为超晶格结构，分析了该结构的能带和透射谱。该超晶格结构可以产生多个界面隧穿态，它们之间的耦合可产生新的通带。研究结果表明，该通带的宽度随光子晶体的周期数变化，而通带的中心位置保持不变。当光子晶体周期数取特定值时, 这个通带将发生分裂，在带间产生零相位带隙或π相位带隙。
Abstract
Two kinds of one-dimensional photonic crystals are repeated alternatively to construct the superlattice structure. The energy-band structures and transmission spectra of the superlattice are analyzed. Results show that multiple interface tunneling modes emerge and they couple each other to form a new pass band. As the periods of the one-dimensional photonic crystals vary, the width of the transmission band changes while the position of the band remains invariant. For specific periods of the photonic crystals, the pass band will split and a zero-phase or π-phase gap emerges.
陈泽锋, 韩鹏, 陈溢杭. 基于光子晶体塔姆态的带隙分裂[J]. 光学学报, 2012, 32(5): 0516002. Chen Zefeng, Han Peng, Chen Yihang. Photonic Band Gap Splitting Based on Optical Tamm States of Photonic Crystal[J]. Acta Optica Sinica, 2012, 32(5): 0516002.
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