title: Peak modulation in multicavity-coupled graphene-based waveguide system.
abstract: Plasmonically induced transparency (PIT) in a multicavity-coupled graphene-based waveguide system is investigated theoretically and numerically. By using the finite element method (FEM), the multiple mode effect can be achieved, and blue shift is exhibited by tunable altering the chemical potential of the monolayer graphene. We find that the increasing number of the graphene rectangle cavity (GRC) achieves the multiple PIT peaks. In addition, we find that the PIT peaks reduce to just one when the distance between the third cavity and the second one is 100 nm. Easily to be experimentally fabricated, this graphene-based waveguide system has many potential applications for the advancement of 3D ultra-compact, high-performance, and dynamical modulation plasmonic devices.
authors.affiliation: School of Science, Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Jiangnan University, Wuxi, 214122, China. jcwang@jiangnan.edu.cn.|Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, 912, Beijing, 100083, China. jcwang@jiangnan.edu.cn.
authors.forename: Jicheng
authors.initials: J
authors.lastname: Wang
authors.affiliation: School of Science, Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Jiangnan University, Wuxi, 214122, China.
authors.forename: Xiaosai
authors.initials: X
authors.lastname: Wang
authors.affiliation: School of Science, Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Jiangnan University, Wuxi, 214122, China.
authors.forename: Hongyan
authors.initials: H
authors.lastname: Shao
authors.affiliation: School of Science, Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Jiangnan University, Wuxi, 214122, China.
authors.forename: Zheng-Da
authors.initials: ZD
authors.lastname: Hu
authors.affiliation: School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China.
authors.forename: Gaige
authors.initials: G
authors.lastname: Zheng
authors.affiliation: Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, 912, Beijing, 100083, China. fzhang@semi.ac.cn.
authors.forename: Feng
authors.initials: F
authors.lastname: Zhang
keywords: Graphene-based waveguide; Multiple peak modulation; Plasmonically induced transparency