Abstract
In this paper, a numerical solution for a plasmonic absorption modulator with a six-layer structure consisting of an air superstrate, gold, Barium Titanate, n-type Silicon, gold layers and thin-shell nanolattice aluminum oxide substrate is presented. Regarding the suggested structure, parameters related to the absorption modulation are investigated at different thicknesses. Here, the Pockels effect and the free carrier dispersion effect are considered simultaneously. The dispersion relation of this structure is analytically obtained and numerically solved by the Nelder-Mead method. According to our results, it is understood that this modulator has a high ability to be utilized in optical communication systems.
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