Back to Search Start Over

High Sensitivity Plasmonic Sensor Based on Fano Resonance with Inverted U-Shaped Resonator

Authors :
Haiou Li
Liu Xingpeng
Yanping Xu
Jianyun Chen
Lizhen Zeng
Gongli Xiao
Hongyan Yang
Jianqing Li
Ou Zetao
Source :
Sensors (Basel, Switzerland), Sensors, Vol 21, Iss 1164, p 1164 (2021)
Publication Year :
2021
Publisher :
MDPI, 2021.

Abstract

Herein, we propose a tunable plasmonic sensor with Fano resonators in an inverted U-shaped resonator. By manipulating the sharp asymmetric Fano resonance peaks, a high-sensitivity refractive index sensor can be realized. Using the multimode interference coupled-mode theory and the finite element method, we numerically simulate the influences of geometrical parameters on the plasmonic sensor. Optimizing the structure parameters, we can achieve a high plasmonic sensor with the maximum sensitivity for 840 nm/RIUand figure of merit for 3.9 × 105. The research results provide a reliable theoretical basis for designing high sensitivity to the next generation plasmonic nanosensor.

Details

Language :
English
ISSN :
14248220
Volume :
21
Issue :
4
Database :
OpenAIRE
Journal :
Sensors (Basel, Switzerland)
Accession number :
edsair.doi.dedup.....f3a03241383fd24a02c53df5537e8f4a