研究目的
Investigating the design and performance of an ultra-compact nano-plasmonic refractive index sensor using a Dielectric-Metal-Dielectric (DMD) plasmonic waveguide coupled with a rectangular slot.
研究成果
The proposed simple rectangular nanoscale plasmonic refractive index sensor composed of a DMD waveguide achieved a sensitivity of 818 nm/RIU. The structure's feasibility for fabrication and its high performance make it suitable for practical applications in nanoscale optical devices and nano chip sensors.
研究不足
The study is limited to numerical simulation and does not include experimental validation. The complexity of nanoscale fabrication is acknowledged, but the proposed structure is simpler compared to other designs.
1：Experimental Design and Method Selection:
The study employs a Dielectric-Metal-Dielectric (DMD) plasmonic waveguide coupled with a rectangular slot, analyzed numerically with the Finite Element Method (FEM).
2：Sample Selection and Data Sources:
The Material Under Sensing (MUS) is dielectric in nature, with silver used as the metal.
3：List of Experimental Equipment and Materials:
Silver for the metal part and various dielectric materials for the MUS.
4：Experimental Procedures and Operational Workflow:
A modulated Gaussian pulse is injected into port-1, and output is taken from port-2 to analyze the transmission spectra.
5：Data Analysis Methods:
The transmission spectra are analyzed to determine the sensitivity of the structure to changes in the refractive index of the MUS.
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