研究目的
Investigating the performance of a D-shaped optical fiber chemical sensor using nanoscale silver strip for high sensitivity detection in the near-infrared region.
研究成果
The designed D-shaped optical fiber chemical sensor with a nanoscale silver strip demonstrates high sensitivity and resolution for detecting changes in refractive index, making it suitable for chemical and biological sensing applications. The sensor's performance is optimized for high refractive index ranges, with potential for low-cost fabrication.
研究不足
The study is theoretical and based on simulations, which may not fully account for practical fabrication challenges and environmental factors affecting sensor performance.
1：Experimental Design and Method Selection:
The study employs finite element method (FEM) based on COMSOL Multiphysics to simulate and analyze the sensor's performance.
2：Sample Selection and Data Sources:
The sensor is designed with a single mode fiber (SMF) with core and cladding diameters of
3：2 and 125 μm respectively, and a nanoscale silver strip deposited over the polished surface. List of Experimental Equipment and Materials:
The materials include GeO2 doped silica for the core, fused silica for the cladding, and silver for the nanoscale strip.
4：Experimental Procedures and Operational Workflow:
The sensor's parameters such as thickness, width, and polishing depth are optimized to achieve maximum sensitivity. The sensing properties are investigated for a range of refractive indices (
5：34 to 42). Data Analysis Methods:
The sensitivity is calculated based on the shift in resonance wavelength and amplitude modulation method.
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