Abstract
In this paper, we study the strong coupling between the topological edge state and Fabry–Perot cavity state in a one-dimensional plasmonic crystal heterostructure. Finite element method simulations show that a significant plasmonic Rabi splitting is achieved in the near-infrared region and Rabi energy can reach up to 45.5 meV. A dual-band near-perfect absorption phenomenon can be observed, and a coupled oscillator model is proposed to explain the origin of Rabi splitting. In addition, the dual-band unidirectional reflectionless plasmonic propagation in the Rabi splitting region is investigated, and the non-Hermitian scattering matrix is used to verify the existence of double exceptional points. The study may find applications in plasmonic switchers, on-chip sensors, diode-like devices, and filters.
© 2023 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Ankit Singh, Pramod Kumar, and Akhilesh Tiwari
J. Opt. Soc. Am. B 40(5) 1092-1101 (2023)
Wei Qiu, Leiming Zhou, Yuchen Wang, Xiaoyun Jiang, Chan Huang, Lin Zhou, Qiwen Zhan, and Jigang Hu
Opt. Express 31(12) 20457-20470 (2023)
Guofeng Yang, Jian Ding, and Yueke Wang
Appl. Opt. 60(19) 5610-5614 (2021)