Mechanism of the Fano resonance in a planar metamaterials: Analysis from the coupled two-oscillator model

TL;DR

This paper explains the Fano resonance mechanism in planar metamaterials using a coupled two-oscillator model, describing optical spectra and predicting asymmetric line shapes due to mode coupling.

Contribution

It introduces a coupled oscillator model to analyze Fano resonances in planar metamaterials, providing insights into their optical properties and spectral features.

Findings

Fano resonances cause asymmetric spectral line shapes.

Coupled oscillator model predicts optical reflectance and transmittance features.

Mode coupling explains radiative properties in metamaterials.

Abstract

Mechanism of the Fano resonances in planar metamaterials demonstrate based on the coupled two-oscillator model. We have described the optical spectrums like reflectance and transmittance near the resonances of bright mode (continuum mode) and dark mode (discrete mode) and explained their optical properties by the Fano formulism. the Fano formulism of the resonances in the planar metamaterials can predict the asymmetric shape line and radiative properties occurring in reflectance and transmittance from the coupling between bright and dark modes.