This paper has proposed a surface plasmon resonance-based photonic crystal fiber (PCF) sensor to detect even a small change in refractive index (RI) values of analytes. The impact on sensor performance by Bezier polygon core structure of the PCF and gold coating in an air hole have been carried out. The sensor resonance wavelength and the respective confinement loss are analyzed for various Bezier polygon parameters and for various gold coating thicknesses. Also, a comparison between gold filling and gold coating in an air hole of PCF have been undertaken to show the superiority of the gold coating in sensor performance. The promising sensor performance has been noted down above the analyte RI of about 1.3 with an upright sensitivity of about 7000 nm/RIU. This type of sensor is of great interest in medical and industrial applications.

中文翻译：

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基于表面等离子体的光纤折射率传感器

本文提出了一种基于表面等离子体共振的光子晶体光纤 (PCF) 传感器，以检测分析物折射率 (RI) 值的微小变化。已经进行了 PCF 的 Bezier 多边形核心结构和空气孔中的金涂层对传感器性能的影响。针对各种贝塞尔多边形参数和各种金涂层厚度，分析了传感器谐振波长和相应的限制损耗。此外，还对 PCF 气孔中的金填充和金涂层进行了比较，以显示金涂层在传感器性能方面的优越性。有希望的传感器性能已被注意到高于分析物 RI 约 1.3，直立灵敏度约为 7000 nm/RIU。这种类型的传感器在医疗和工业应用中很受关注。