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Title: Effective Surface Plasmon Polaritons Induced by Modal Dispersion in a Waveguide
Authors: Li, Zhuo
Liu, Liangliang
Sun, Hengyi
Sun, Yunhe
Gu, Changqing
Chen, Xinlei
Liu, Yun
Luo, Yu
Keywords: Surface plasmon polaritons
Issue Date: 2017
Source: Li, Z., Liu, L., Sun, H., Sun, Y., Gu, C., Chen, X., et al. (2017). Effective Surface Plasmon Polaritons Induced by Modal Dispersion in a Waveguide. Physical Review Applied, 7(4), 044028-.
Series/Report no.: Physical Review Applied
Abstract: We provide further theoretical insights and experimental verification of the modal-dispersion-induced effective surface-plasmon polaritons (ESPPs) by engineering the transverse-electric (TE) modes in conventional rectangular waveguides. The complete field distributions, dispersion relations, and asymptotic frequency of the ESPPs are derived analytically. Wave-port excitations and smooth bridges are designed for the mode conversion between propagating modes in rectangular waveguides and the ESPPs. Analytical calculations and numerical simulations are performed for TE 10 - and TE 20 -mode-induced ESPPs, showing excellent agreement. Moreover, we design a double-layered substrate-integrated waveguide showing that ESPPs are supported at the interface between the two layers with different dielectric constants. This work opens up an avenue for low-frequency designer surface plasmons and may find potential applications in the design of compact filters, resonators, and sensors of ESPPs in the microwave and terahertz frequencies.
DOI: 10.1103/PhysRevApplied.7.044028
Schools: School of Electrical and Electronic Engineering 
Rights: © 2017 American Physical Society (APS). This paper was published in Physical Review Applied and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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