Ultra-high figure of merit refractive index sensor based on concentric ring and disk resonator

被引:0
|
作者
Hui Guo
Zongqiang Chen
Jiwei Qi
Meiling Jiang
Jing Chen
Yudong Li
Qian Sun
机构
[1] Nankai University,MOE Key Laboratory of Weak Light Nonlinear Photonics, Tianjin Key Laboratory of Photonics Material and Technology, School of Physics
[2] Jinan University,Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology
来源
Journal of Optics | 2023年 / 52卷
关键词
Plasmonics; Refractive index sensor; Figure of merit; Coupled mode theory;
D O I
暂无
中图分类号
学科分类号
摘要
A plasmonic refractive index sensor based on metal–insulator–metal (MIM) waveguide coupled with concentric ring and disk resonator (CRDR) is proposed in this work. The plasmonic refractive index sensor with a sensitivity of 1039 nm/RIU and a high figure of merit (FOM) of 401 in the near-infrared region is numerically investigated using a finite element method (FEM). The physical mechanism of high Q factor of the mode of CRDR can be explained by the coupled mode theory. The structural parameters of the plasmonic sensor are also discussed. The structural parameters can be changed to adjust the sensor properties. Furthermore, the application of proposed plasmonic sensor in bio-sensing is analyzed.
引用
收藏
页码:120 / 127
页数:7
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