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- Title
Research on sensing characteristics of triple independent tuning with high sensitivity based on MIM waveguide.
- Authors
Qu, Desheng; Sun, Yiping; Ren, Yongpeng; Wu, Qiaohua; Li, Chunlei
- Abstract
In this paper, a high sensitivity metal–insulator–metal waveguide structure capable of realizing triple independent tuning is designed and studied. The magnetic field distribution characteristics of the structure are investigated by finite element method. Combined with the transmission spectra, the propagation characteristics of the structure are studied. By changing the structure parameters and refractive index in the resonators, the sensing characteristics of the structure are analyzed. The sensitivity of the three peaks of the structure can reach high values, 3165 nm/RIU, 2590 nm/RIU and 3885 nm/RIU, respectively. More importantly, these three peaks are independent of each other, and do not affect each other, which can achieve triple independent tuning. This structure can measure the three physical quantities at the same time, which greatly improves the sensing efficiency and provides an important idea for the design of high-efficiency nanosensors. In addition, the feasibility of practical sensing applications of the structure is demonstrated by measuring the concentrations of ammonium chloride, glycerol and plasma solutions.
- Subjects
METAL-insulator-metal structures; REFRACTIVE index; FINITE element method; AMMONIUM chloride; PHYSICAL constants
- Publication
Optical & Quantum Electronics, 2024, Vol 56, Issue 2, p1
- ISSN
0306-8919
- Publication type
Article
- DOI
10.1007/s11082-023-05706-8