Compact and broadband silicon-based transverse electric-pass power splitter using triple-guide directional couplers with hybrid plasmonic waveguides and subwavelength gratings

2020 ◽  
Vol 14 (03) ◽  
Author(s):  
Yufei Chen ◽  
Jinbiao Xiao
Keyword(s):  
Transverse Electric ◽  
Plasmonic Waveguides ◽  
Directional Couplers ◽  
Power Splitter ◽  
Subwavelength Gratings ◽  
Hybrid Plasmonic Waveguides ◽  
Silicon Based

scholarly journals Design of Power Splitters Based on Hybrid Plasmonic Waveguides

2021 ◽  
Vol 11 (18) ◽  
pp. 8644
Author(s):  
Xiaoyan Shi ◽  
Wu Yang ◽  
Huaizhong Xing ◽  
Xiaoshuang Chen
Keyword(s):  
Dielectric Film ◽  
Fdtd Method ◽  
Plasmonic Waveguides ◽  
Semiconductor Nanowire ◽  
Power Splitter ◽  
Power Splitters ◽  
Hybrid Plasmonic Waveguides ◽  
Difference Time ◽  
Plasmon Polaritons ◽  
Field Intensity Distribution

Plasmonic power splitters based on hybrid plasmonic waveguides (HPWs) are proposed and investigated. The HPW consists of a high-permittivity semiconductor nanowire embedded in a SiO2 dielectric film near a metal surface. The propagation behaviors of Surface Plasmon Polaritons (SPPs) in HPWs are numerically simulated by the 3D finite-difference time-domain (FDTD) method. The incident field is transferred from the middle waveguide to the waveguides on both sides due to the coupling between adjacent waveguides. The intensity distributions can be explained by the multimode interference of SPPs supermodes. According to the field intensity distribution of five HPWs, we design a 1 × 3 power splitter and a 1 × 2 power splitter by reducing the length of some specific waveguides.

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