Affiliation:
1. North University of China
2. Zhejiang University of Water Resources and Electric Power
3. Zhejiang-Belarus Joint Laboratory of Intelligent Equipment and System for Water Conservancy and Hydropower Safety Monitoring
Abstract
In this study, we proposed a novel refractive index sensor structure, comprising a metal–insulator–metal (MIM) waveguide and a circular ring containing a disk-shaped cavity (CRDC). The finite element method was used to theoretically analyze the sensor characteristics. The simulation results showed that the disk-shaped cavity is the key to the asymmetric Fano resonance, and the radius of the CRDC has a significant influence on the performance of the sensor. A maximum sensitivity and figure of merit (FOM) of 2240 nm/RIU and 62.5, respectively, were realized. Additionally, the refractive index sensor exhibits the potential of aiding in temperature detection owing to its simple structure and high sensitivity of 1.186 nm/ºC.
Funder
Key Research and Development Project of Zhejiang Province
Natural Science Foundation of Zhejiang Province
National Natural Science Foundation of China
Key Research Project by Department of Water Resources of Zhejiang Province
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering
Cited by
8 articles.
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