Abstract

In this work, we analyze the reflection and the transmission of surface plasmons (SPs) between a single-mode and a multimode dielectric-loaded graphene plasmon waveguides. An effective index method (EIM) in combination with mode matching theory (MMT) is used to calculate the power transmittance and reflectance. The EIM is employed to find effective refractive indices of modes of single-mode and multimode sections. We introduce an analytical model for SPs modes based on procedures. Then the MMT is utilized at the junction of two waveguides to find the transmittance and reflectance of the mode coming from the single-mode section to the multimode section.

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