研究目的
Investigating the design and fabrication of an all-fiber waveguide coupled surface plasmon resonance (SPR) sensor with Au-ZnO-Au sandwich structure for enhanced sensitivity in refractive index sensing.
研究成果
The all-fiber waveguide coupled SPR sensor with Au-ZnO-Au sandwich structure demonstrated a significant sensitivity enhancement over conventional SPR sensors, with potential for further improvement by optimizing the ZnO layer thickness and extending measurements to the infrared spectral range.
研究不足
The experimental system was limited to visible spectral range measurements, potentially underestimating the sensitivity enhancement achievable in the infrared spectral range.
1：Experimental Design and Method Selection:
The sensor was designed with an Au-ZnO-Au sandwich multi-layer structure and analyzed using the transfer matrix method (TMM).
2：Sample Selection and Data Sources:
The sensor was fabricated on a plastic clad silica multimode optical fiber.
3：List of Experimental Equipment and Materials:
A tungsten halogen light source, spectrophotometer, and RF magnetron sputtering method were used.
4：Experimental Procedures and Operational Workflow:
The sensor was tested with alcoholic solutions of varying refractive indices.
5：Data Analysis Methods:
The transmission spectra were analyzed to determine the sensitivity enhancement.
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