Design and simulation of a novel nano-plasmonic split-ring resonator filter

Roozbeh Negahdari, Esmat Rafiee and Farzin Emami

Journal of Electromagnetic Waves and Applications, 2018, vol. 32, issue 15, 1925-1938

Abstract: In this paper, a novel nano-plasmonic split-ring resonator filter is proposed and simulated. In this structure, split-ring resonator is situated between a T-shaped and a straight waveguide. Simulations are done based on Finite-Difference-Time Domain method. The filter is based on metal–insulator-metal (MIM) structure. Split-ring resonator, straight and T-shaped waveguides are consisted of air which are situated in a silver background. Effects of different structural parameters, such as the width of the straight waveguide, the distance between left waveguide and ring, T-shaped waveguide’s width and length and the split position on the transmission spectrum of the filter are being investigated. The proposed filter can confine light to sub-wavelength dimensions (of the order of nano-meter); therefore, it can be used in highly integrated optical circuits. Hence, by adjusting structural parameters, the best transmission peak value of 0.84 at 935 nm will be obtained which can be utilized in integrated optical communication systems.

Date: 2018
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DOI: 10.1080/09205071.2018.1482240

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