研究目的
To propose, design, and simulate a novel plasmonic dual-wavelength multiplexer for coupling free-space waves to metal–insulator–metal (MIM) waveguides.
研究成果
A novel dual-wavelength plasmonic multiplexer is proposed and simulated, showing high extinction ratio of greater than 10 dB in all cases. The structure has potential applications in plasmonic-based nanophotonic systems.
研究不足
Deviations in simulated results compared to theoretical design, possibly due to ignoring scattering and coupling effects.
1：Experimental Design and Method Selection:
The design involves two nanoslits carved on a metal film to couple two different wavelengths onto MIM modes propagating in the same direction. FEM technique is used for simulation.
2：Sample Selection and Data Sources:
The structure is simulated with circular and plane wave fronts.
3：List of Experimental Equipment and Materials:
The metal in the structure is gold, and the dielectric within the waveguide has a refractive index of 1.
4：Experimental Procedures and Operational Workflow:
2.
4. Experimental Procedures and Operational Workflow: The width of the bus waveguide is fixed as 100 nm, and the sizes of both the slits are fixed as 100 nm × 100 nm. Light illuminating the structure is p-polarized.
5：Data Analysis Methods:
The performance is evaluated based on the extinction ratio.
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