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

被引：4
|
作者：
Guo, Hui [1 ]
Chen, Zongqiang [1 ]
Qi, Jiwei [1 ]
Jiang, Meiling [2 ]
Chen, Jing [1 ]
Li, Yudong [1 ]
Sun, Qian [1 ]
机构：
[1] Nankai Univ, Sch Phys, MOE Key Lab Weak Light Nonlinear Photon, Tianjin Key Lab Photon Mat & Technol, Tianjin 300071, Peoples R China
[2] Jinan Univ, Inst Photon Technol, Guangdong Prov Key Lab Opt Fiber Sensing & Commun, Guangzhou 510632, Peoples R China
来源：
JOURNAL OF OPTICS-INDIA | 2023年 / 52卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Plasmonics; Refractive index sensor; Figure of merit; Coupled mode theory; PLASMONIC WAVE-GUIDE; FANO RESONANCES; FILTERS;
D O I：
10.1007/s12596-022-00915-y
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
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：8
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