Refractive index sensor based on a ring with a disk-shaped cavity or temperature detection applications

被引：9
|
作者：
Zhang, Xiaoyu [1 ,2 ,3 ]
Yan, Shubin [2 ,3 ]
Chen, Zhanbo [2 ]
Ren, Yifeng [1 ]
Zhang, Yi [2 ]
Liu, Pengwei [1 ,2 ,3 ]
Shen, Lifang [3 ]
Li, Tingsong [1 ,2 ,3 ]
机构：
[1] North Univ China, Sch Elect & Control Engn, Taiyuan 030051, Peoples R China
[2] Zhejiang Univ Water Resources & Elect Power, Sch Elect Engn, Hangzhou 310018, Peoples R China
[3] Zhejiang Belarus Joint Lab Intelligent Equipment, Hangzhou 310018, Peoples R China
来源：
APPLIED OPTICS | 2022年 / 61卷 / 14期
基金：
中国国家自然科学基金;
关键词：
PLASMONIC WAVE-GUIDE; FANO RESONANCES;
D O I：
10.1364/AO.454522
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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/degrees C. (C) 2022 Optica Publishing Group
引用
收藏
页码：3997 / 4004
页数：8
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