Optical Kerr Nonlinear Performance of Metal-Cap WedgedShape Hybrid Plasmonic Waveguide

Abstract

This paper aims to investigate the enhancement of Kerr nonlinear performance caused by more optical confinement and longer propagation length due to different metal-cap wedge-shaped hybrid plasmonic waveguide geometric parameters. In this work, we will focus on Kerr nonlinear effect, and analyze how the different waveguide geometries can enhance this effect. Our theoretical investigation shows that the presented nonlinear wedge-shaped hybrid plasmonic waveguide structure with a wedge-shaped gap is suitable for photonic integrated circuits based on the hybrid plasmonic passive waveguide, and is a suitable candidate for the photonic devices at nano-scales with nonlinearity. It is also found that the investigated structure can have a longer propagation length of 2120 m at a 10 nm thick nonlinear dielectric. The minimum effective mode area of the investigated structure is 0.0263 m2 and the maximum nonlinear coefficient is