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A Three-Core Hybrid Plasmonic Polarization Splitter Designing Based on the Hybrid Plasmonic Waveguide for Utilizing in Optical Integrated Circuits

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Abstract

In this research, by using the theory of the surface plasmon polaritons and the plasmonic hybrid components, a new symmetric three-core hybrid plasmonic splitter is proposed at the communication wavelength range. The design consists of two silicon external waveguides with the same dimensions and features, and a centered hybrid waveguide. The centered hybrid waveguide simulated with two silver metal layers and a core silicon waveguide. The plasmonic hybrid coupler supports three supermodes and directly couples the transverse magnetic (TM) mode to the second external waveguide. In contrast, the transverse electric (TE) mode passes through the first external waveguide without coupling. The essential features of the proposed design were studied thoroughly. The most significant parameters of the structure, including propagated modes in the waveguides, extinction ratio (ER), insertion loss (IL), and power transfers, were evaluated using the finite-difference eigenmode (FDE) and eigenmode expansion (EME) methods. The results show that the ERs for the external waveguides are greater than 38 dB for the first external waveguide and 40 dB for the second external waveguide. The ILs of the TE and TM modes are less than 0.1 dB and 0.5 dB at the 1550 nm telecommunication wavelength, respectively.

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  1. Department of Electrical and Computer Engineering, University of Tabriz, Tabriz, 5166616471, Iran

    Leyla Shirafkan Dizaj, Karim Abbasian & Tofiq Nurmohammadi

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  1. Leyla Shirafkan Dizaj
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Shirafkan Dizaj, L., Abbasian, K. & Nurmohammadi, T. A Three-Core Hybrid Plasmonic Polarization Splitter Designing Based on the Hybrid Plasmonic Waveguide for Utilizing in Optical Integrated Circuits. Plasmonics 15, 2213–2221 (2020). https://doi.org/10.1007/s11468-020-01249-w

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