研究目的
Investigating a hybrid plasmonic tapered coupler for efficient light injection from conventional dielectric waveguide to a hybrid insulator–metal–insulator (HIMI) plasmonic waveguide.
研究成果
The designed HIMI tapered coupler efficiently injects light energy from the dielectric waveguide to the hybrid plasmonic waveguide, achieving high transmission with low losses. The coupler demonstrates excellent performance in terms of transmission efficiency, propagation length, mode propagation loss, and light confinement, making it suitable for on-chip applications.
研究不足
The study is limited by the fabrication challenges of the proposed structure, including the deposition of different layers and patterning to nanometer dimensions. Additionally, the performance of the coupler is sensitive to the thickness of the spacer layer and metal, which may require precise control during fabrication.
1：Experimental Design and Method Selection:
The study involves designing a hybrid plasmonic tapered coupler to efficiently couple light from a dielectric waveguide to a HIMI plasmonic waveguide. The design rationale is based on optimizing transmission efficiency and minimizing reflection losses.
2：Sample Selection and Data Sources:
The study uses Si and SiO2 as dielectric materials with refractive indices 3.5 and 1.44, respectively, and silver (Ag) as the metal film in the HIMI plasmonic waveguide.
3：5 and 44, respectively, and silver (Ag) as the metal film in the HIMI plasmonic waveguide.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: The materials include Si, SiO2, and Ag. The equipment includes CST microwave studio suite for simulations.
4：Experimental Procedures and Operational Workflow:
The study involves simulating the proposed structure using CST microwave studio suite, applying perfectly matched layer boundary conditions, and using 25 tetrahedrons per wavelength for refined meshing.
5：Data Analysis Methods:
The study analyzes transmission efficiency, reflection losses, propagation length, mode propagation losses, and light confinement through parametric variations of the structure.
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