Numerical investigation of adhesion-layer-induced optical losses in tapered plasmonic MIM waveguides

Key Points

• Optical losses in tapered plasmonic MIM waveguides are significantly increased by adhesion layers, impacting performance.
• The modeling indicates that optimizing the adhesion layer thickness can reduce these losses by up to 30%.
• Numerical analysis employed to evaluate loss mechanisms across various taper designs and adhesion properties.
• Findings highlight the need for better design practices to minimize optical losses due to adhesion layers.