A surface plasmon-based hexagonal photonic crystal fiber sensor is numerically computed and studied covering a large span of analyte refractive index from 1.33 to 1.40. Structural design parameters are optimized to improve the sensor performance. Investigation of sensor sensitivity has been performed by analyzing the electromagnetic behavior of light using finite element method-based mode solver. The studied sensor yields the maximum amplitude sensitivity of 3958.84 RIU − 1 at analyte RI of 1.39 and moderate wavelength sensitivity of 8000 nm RIU − 1 at analyte RI of 1.40. The observed results are also presented by changing the gold layer thickness, lattice period, and air hole diameter. The reported plasmonic sensor is an appealing aspirant in the field of biochemical sensing, biomolecule detection, and biological sample recognition.

中文翻译：

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基于表面等离子体共振的高灵敏实芯镀金六方光子晶体光纤传感器设计与分析

数值计算和研究了基于表面等离子体的六边形光子晶体光纤传感器，覆盖了从 1.33 到 1.40 的大范围分析物折射率。优化结构设计参数以提高传感器性能。通过使用基于有限元方法的模式求解器分析光的电磁行为，对传感器灵敏度进行了研究。所研究的传感器在分析物 RI 为 1.39 时产生 3958.84 RIU - 1 的最大振幅灵敏度，在分析物 RI 为 1.40 时产生 8000 nm RIU - 1 的中等波长灵敏度。观察结果也通过改变金层厚度、晶格周期和气孔直径来呈现。报道的等离子体传感器是生化传感、生物分子检测和生物样品识别领域的一个有吸引力的有志者。