Optical filtering properties of subwavelength Tai-chi-shaped metal hole arrays

We studied numerically the enhanced optical transmission (EOT) through periodic subwavelength circular-sharp hole arrays in metallic films with different edge sharp distribution features of unit structures. Detailed studies indicate that the unit structure edge sharp distribution features strongly influence the surface plasmons (SPs). These results demonstrate that the number of edge sharp activated the localized surface plamons (LSP) resonance on the unit structure is changed by rotating the polarization of the incident light, leading to change the infrared transmittance of the array. Moreover, a compact plasmonic switch via periodic circular-sharp hole arrays based on the dependence of SPs on unit structural edge sharp distributions is proposed. The finding provides a new idea for designing plasmonics devices, and expands the application range of metal micro-nano structure in the field of optical communications and information processing.

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A Compact Optical Switch via Plasmonics of Subwavelength Circular‐Sharp Hole Arrays in Metal Films

Sun

Deng

Sheng

et al. 2017

Annalen der Physik

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Dependence of Surface Plasmons on Unit Structure Edge Sharp Features

et al. 2016

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Multiple surface plasmon resonances of square lattice nanohole arrays in Au-SiO2-Au multilayer films

Liu

Luo

et al. 2017

Optics Communications

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Optical filtering properties of subwavelength Tai-chi-shaped metal hole arrays

Cited by 3 publications

References 35 publications

A Compact Optical Switch via Plasmonics of Subwavelength Circular‐Sharp Hole Arrays in Metal Films

A Compact Optical Switch via Plasmonics of Subwavelength Circular‐Sharp Hole Arrays in Metal Films

Dependence of Surface Plasmons on Unit Structure Edge Sharp Features

Multiple surface plasmon resonances of square lattice nanohole arrays in Au-SiO2-Au multilayer films

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