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Updated: May 24, 2025

Fabrication and Characterization of Superconducting Resonators
Published on: May 21, 2016
Fano Resonant Sensing in MIM Waveguide Structures Based on Multiple Circular Split-Ring Resonant Cavities
Wenjing Wang1,2, Shaoze Zhang3, Huiliang Cao3
1School of Microelectronics, University of Science and Technology of China, Hefei 230022, China.
Abstract:
In this work, a non-through metal-insulator-metal (MIM) waveguide capable of exciting three Fano resonances was designed and numerically studied using the finite element method. Fano resonances are achieved through the interaction between the modes of multiple circular split-ring resonator cavities and the waveguide. The effect of coupling between different resonators on the Fano resonance peaks is investigated. Independent tuning of the Fano resonance wavelength and transmission rate is accomplished by modifying the structural rotation angle and geometric parameters. After optimizing these parameters, the structure achieves an optimal refractive index sensitivity of 946.88 nm/RIU and a figure of merit of 99.17. The proposed structure holds potential for guiding the design of nanosensors.
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