Acta Optica Sinica, Volume. 40, Issue 13, 1324002(2020)
Study on Subwavelength Transmission Properties of Triangular-Shaped Graphene-Coated Nanowires on Substrate
This paper proposes a plasmonic waveguide with a triangular-shaped graphene-coated nanowire integrated on the silicon substrate. The transmission properties of the fundamental graphene plasmon mode and their dependence on the geometric and physical parameters are fully investigated by the finite element method. The results show that the gap distance, vertex angle, corner radius, and chemical potential of graphene have significant influences on the modal transmission properties. By optimizing the design, the proposed structure can be used to achieve the deep-subwavelength modal field transmission with a propagation length of up to 10 μm and a normalized mode area of only about 10 -6. The proposed graphene plasmonic waveguide may offer a certain theoretical basis for the design of tunable nanophotonic devices.
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Da Teng, Wenshuai Ma, Yandie Yang, Jinkang Guo, Kai Wang. Study on Subwavelength Transmission Properties of Triangular-Shaped Graphene-Coated Nanowires on Substrate[J]. Acta Optica Sinica, 2020, 40(13): 1324002
Category: Optics at Surfaces
Received: Mar. 2, 2020
Accepted: Mar. 30, 2020
Published Online: Jul. 9, 2020
The Author Email: Teng Da (tengda@zznu.edu.cn), Wang Kai (wangkai@mail.sitp.ac.cn)