A double-sided polished photonic crystal fiber (DP-PCF) for surface plasmon resonance(SPR) sensing is designed and analyzed by using the finite element analysis software COMSOL 5.5. The suggested design shows strong sensitivity stability in the low refractive index (RI) region (\(1.33\sim 1.39\)) and ultra-high sensitivity in the high RI region (\(1.39\sim 1.43\)), respectively. The structural parameters of the proposed sensor are studied to analyze the stability and high sensitivity of the fiber sensor. The introduced DP-PCF sensor offers high sensitivity of 32,434 nm/RIU in the RI range of \(1.39\sim 1.43\) due to its special double-sided polishing design.

中文翻译：

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双面抛光超稳定和超灵敏的光纤传感器

使用有限元分析软件COMSOL 5.5设计并分析了用于表面等离振子共振（SPR）传感的双面抛光光子晶体光纤（DP-PCF）。建议的设计分别在低折射率（RI）区域（\（1.33 \ sim 1.39 \））和在高RI区域（\（1.39 \ sim 1.43 \））中具有超高灵敏度，显示出强大的灵敏度稳定性。研究了所提出的传感器的结构参数，以分析光纤传感器的稳定性和高灵敏度。引入的DP-PCF传感器由于其特殊的双面抛光设计，在RI范围\（1.39 \ sim 1.43 \）中具有32,434 nm / RIU的高灵敏度。