Independently tunable dual resonant dip refractive index sensor based on metal-insulator-metal waveguide with Q-shaped resonant cavity

doi:10.1088/1674-1056/ac48fe

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	Independently tunable dual resonant dip refractive index sensor based on metal-insulator-metal waveguide with Q-shaped resonant cavity
	Chen, Haowen 2; Qi, Yunping 1,2; Ding, Jinghui 2; Yuan, Yujiao 2; Tian, Zhenting 2; Wang, Xiangxian 3
刊名	Chinese Physics B
	2022-03-01
卷号	31 期号:3
关键词	Cavity resonators Metal insulator boundaries Metals MIM devices Phonons Photons Plasmonics Refractive index Refractometers Semiconductor insulator boundaries Surface plasmon resonance Time domain analysis Coupling theory Interference coupling Metal-insulator-metal waveguides Metals A Multi-mode interference Multi-mode interference coupling theory Plasmonic resonators Refractive index sensor Transmission property Tunables
ISSN号	1674-1056
DOI	10.1088/1674-1056/ac48fe
英文摘要	A plasmonic resonator system consisting of a metal insulator metal waveguide and a Q-shaped resonant cavity is proposed in this paper. The transmission properties of surface plasmon polaritons in this structure are investigated by using the finite difference in time domain (FDTD) method, and the simulation results contain two resonant dips. The physical mechanism is studied by the multimode interference coupled mode theory (MICMT), and the theoretical results are in highly consistent with the simulation results. Furthermore, the parameters of the Q-shaped cavity can be controlled to adjust the two dips, respectively. The refractive index sensor proposed in this paper, with a sensitivity of 1578 nm/RIU and figure of merit (FOM) of 175, performs better than most of the similar structures. Therefore, the results of the study are instructive for the design and application of high sensitivity nanoscale refractive index sensors. © 2022 Institute of Physics Publishing. All rights reserved.
WOS研究方向	Physics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000766354400001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/157981]
专题	理学院
作者单位	1.Engineering Research Center of Gansu Province for Intelligent Information Technology and Application, Northwest Normal University, Lanzhou; 730070, China 2.College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou; 730070, China; 3.School of Science, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Chen, Haowen,Qi, Yunping,Ding, Jinghui,et al. Independently tunable dual resonant dip refractive index sensor based on metal-insulator-metal waveguide with Q-shaped resonant cavity[J]. Chinese Physics B,2022,31(3).
APA	Chen, Haowen,Qi, Yunping,Ding, Jinghui,Yuan, Yujiao,Tian, Zhenting,&Wang, Xiangxian.(2022).Independently tunable dual resonant dip refractive index sensor based on metal-insulator-metal waveguide with Q-shaped resonant cavity.Chinese Physics B,31(3).
MLA	Chen, Haowen,et al."Independently tunable dual resonant dip refractive index sensor based on metal-insulator-metal waveguide with Q-shaped resonant cavity".Chinese Physics B 31.3(2022).