Investigation of the Band Structure of Graphene-Based Plasmonic Photonic Crystals

Pingping Qiu; Weibin Qiu; Zhili Lin; Houbo Chen; Yixin Tang; Jia-Xian Wang; Qiang Kan; Jiao-Qing Pan

doi:10.3390/nano6090166

Investigation of the Band Structure of Graphene-Based Plasmonic Photonic Crystals

Nanomaterials (Basel). 2016 Sep 9;6(9):166. doi: 10.3390/nano6090166.

Authors

Pingping Qiu¹, Weibin Qiu², Zhili Lin³, Houbo Chen⁴, Yixin Tang⁵, Jia-Xian Wang⁶, Qiang Kan⁷, Jiao-Qing Pan⁸

Affiliations

¹ College of Information Science and Engineering, Huaqiao University, No. 668, Jimei Avenue, Jimei District, Xiamen 361021, China. 1511301022@hqu.edu.cn.
² College of Information Science and Engineering, Huaqiao University, No. 668, Jimei Avenue, Jimei District, Xiamen 361021, China. wbqiu@hqu.edu.cn.
³ College of Information Science and Engineering, Huaqiao University, No. 668, Jimei Avenue, Jimei District, Xiamen 361021, China. zllin@hqu.edu.cn.
⁴ College of Information Science and Engineering, Huaqiao University, No. 668, Jimei Avenue, Jimei District, Xiamen 361021, China. 1400201017@hqu.edu.cn.
⁵ College of Information Science and Engineering, Huaqiao University, No. 668, Jimei Avenue, Jimei District, Xiamen 361021, China. yixin_tang_2016@163.com.
⁶ College of Information Science and Engineering, Huaqiao University, No. 668, Jimei Avenue, Jimei District, Xiamen 361021, China. wangjx@hqu.edu.cn.
⁷ Institute of Semiconductors, Chinese Academy of Sciences, 35A, Qinghua East Road, Haidian District, Beijing 100086, China. kanqiang@semi.ac.cn.
⁸ Institute of Semiconductors, Chinese Academy of Sciences, 35A, Qinghua East Road, Haidian District, Beijing 100086, China. jqpan@semi.ac.cn.

Abstract

In this paper, one-dimensional (1D) and two-dimensional (2D) graphene-based plasmonic photonic crystals (PhCs) are proposed. The band structures and density of states (DOS) have been numerically investigated. Photonic band gaps (PBGs) are found in both 1D and 2D PhCs. Meanwhile, graphene-based plasmonic PhC nanocavity with resonant frequency around 175 THz, is realized by introducing point defect, where the chemical potential is from 0.085 to 0.25 eV, in a 2D PhC. Also, the bending wvaguide and the beam splitter are realized by introducing the line defect into the 2D PhC.

Keywords: graphene; nanocavity; photonic crystals; surface plasmon polaritons.