Peak modulation in multicavity-coupled graphene-based waveguide system

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...

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Bibliographic Details
Published in:Nanoscale research letters 2017-12, Vol.12 (1), p.9-7, Article 9
Main Authors: Wang, Jicheng, Wang, Xiaosai, Shao, Hongyan, Hu, Zheng-Da, Zheng, Gaige, Zhang, Feng
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Dynamical systems
Finite element method
Graphene
Holes
Materials Science
Mathematical analysis
Modulation
Molecular Medicine
Nano Express
Nanochemistry
Nanoscale Science and Technology
Nanotechnology
Nanotechnology and Microengineering
Plasmonics
Waveguides
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Summary: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.
ISSN:1931-7573
1556-276X
DOI:10.1186/s11671-016-1791-0