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- Title
Multiparameter Sensing Based on Tunable Fano Resonances in MIM Waveguide Structure with Square-Ring and Triangular Cavities.
- Authors
Wang, Mingyu; Tian, He; Liu, Xing; Li, Jina; Liu, Yajie
- Abstract
In this paper, a metal–insulator–metal (MIM) surface plasmon waveguide structure is proposed and numerically investigated. It is composed of a square-ring cavity with a silver baffle, an isosceles triangle cavity, and a bus waveguide with a silver baffle. The results show that the structure can produce triple Fano resonances that can be independently tuned by changing the structural parameters. The detection of refractive indexes at different positions in the structure was also accomplished, with a maximum sensitivity of 2259.56 nm/RIU. On the basis of this, the simultaneous measurement of multiple parameters (plasma concentration and glucose concentration) was performed. The numerical simulation results are beneficial to the applications of MIM waveguide structure in nanosensing and biosensing with time-sharing or simultaneous measurement of multiple parameters.
- Subjects
FANO resonance; BLOOD sugar; REFRACTIVE index; BAFFLES (Mechanical device)
- Publication
Photonics, 2022, Vol 9, Issue 5, p291
- ISSN
2304-6732
- Publication type
Article
- DOI
10.3390/photonics9050291