期刊
OPTICS EXPRESS
卷 25, 期 19, 页码 22587-22594出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.25.022587
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资金
- Natural Science Fund of China [61378058, 11774103]
- Fujian Province Science Fund for Distinguished Young Scholars [2015J06015]
- Promotion Program for Young and MiddleAged Teachers in Science and Technology Research of Huaqiao University [ZQN-YX203]
- Project for Cultivating Postgraduates' Innovative Ability in Scientific Research of Huaqiao University [1511301022]
A two-dimensional graphene plasmonic crystal composed of periodically arranged graphene nanodisks is proposed. We show that the band topology effect due to inversion symmetry broken in the proposed plasmonic crystals is obtained by tuning the chemical potential of graphene nanodisks. Utilizing this kind of plasmonic crystal, we constructed Nshaped channels and realized topologically edged transmission within the band gap. Furthermore, topologically protected exterior boundary propagation, which is immune to backscattering, was also achieved by modifying the chemical potential of graphene nanodisks. The proposed graphene plasmonic crystals with ultracompact size are subject only to intrinsic material loss, which may find potential applications in the fields of topological plasmonics and high density nanophotonic integrated systems. (C) 2017 Optical Society of America
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