One-dimensional multiband terahertz graphene photonic crystal filters

被引：70

作者：

Li, Yizhe ^{[1
]}

Qi, Limei ^{[1
]}

Yu, Junsheng ^{[1
]}

Chen, Zhijiao ^{[1
]}

Yao, Yuan ^{[1
]}

Liu, Xiaoming ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, Sch Elect Engn, Beijing 100876, Peoples R China

来源：

OPTICAL MATERIALS EXPRESS | 2017年 / 7卷 / 04期

基金：

中国国家自然科学基金;

关键词：

CARBON NANOTUBES; METAMATERIALS; NANORIBBONS; ABSORPTION; DEFECT; BAND;

D O I：

10.1364/OME.7.001228

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Properties of one-dimensional graphene photonic crystals with dual-layer defects are studied. Results show that two defect modes appear within the gaps, and the defect modes shift to the lower frequencies with the chemical potential increasing, the physical mechanism are also given based on the relative dielectric constant of the graphene. It is also found that the frequency, magnitude, and numbers of the defect modes can vary with the symmetrical changes of the dual-defect layers. For oblique incidence, the defect modes of the TE polarization follow a similar trend with the TM polarization, and all the defect modes shift to the higher frequencies and disappear while new defect modes appear at the larger incident angles. These properties of graphene photonic crystals with dual-layer defects have potential applications in tunable terahertz narrow multiband filters. (C) 2017 Optical Society of America

引用

页码：1228 / 1239

页数：12

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