研究目的
To propose and investigate a novel polarization-independent hybrid plasmonic coupler based on a T-shaped slot waveguide for applications in subwavelength integrated photonic circuits.
研究成果
The proposed polarization-independent hybrid plasmonic coupler based on the T-shaped slot waveguide achieves high extinction ratios and low insertion losses for both TE and TM polarizations at 1550 nm. The structure shows good fabrication tolerance and has potential applications in subwavelength devices and integrated photonic circuits.
研究不足
The study is based on numerical simulations, and practical fabrication may introduce deviations from the ideal conditions. The TM mode exhibits relatively higher insertion loss due to plasmonic loss.
1：Experimental Design and Method Selection:
The study employs numerical simulations using the finite element method to investigate the proposed coupler's performance.
2：Sample Selection and Data Sources:
The structure consists of two identical parallel TSDLSPP waveguides with specific dimensions and materials (silver, silica, and silicon).
3：List of Experimental Equipment and Materials:
The materials selected for the semi-infinite substrate, slot regions, and ridges are silver (Ag), silica (SiO2), and silicon (Si), respectively.
4：Experimental Procedures and Operational Workflow:
The simulation involves setting the wavelength to 1550 nm and varying structural parameters to achieve polarization-independent operation.
5：Data Analysis Methods:
The performance is assessed by extinction ratio (ER) and insertion loss (IL), calculated from the transmitted optical powers at different ports.
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