Abstract A high sensitivity wide range surface plasmon resonance (SPR) refractive index sensor based on photonic crystal fiber (PCF) has been proposed in this paper. The finite element method (FEM) is used to calculate and analyte the structure of PCF. The optical properties of the PCF are investigated by adjusting the refractive index of liquid analyte. By optimization, the fiber sensor achieves a high linearity refractive index sensitivity of 0.9979 and 1931.03 nm / RIU over a refractive index range from 1.350 to 1.460 and achieves a short PCF length of 1 mm. It is allowed the sensor to be small enough to be integrated into inspection equipment,and expected to gain important applications in the fields of biological monitoring, environmental monitoring, and chemical production.

中文翻译：

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基于光子晶体光纤的宽范围折射率传感器，具有纤芯模式和金属缺陷模式之间的相位匹配

摘要 本文提出了一种基于光子晶体光纤（PCF）的高灵敏度宽范围表面等离子体共振（SPR）折射率传感器。有限元法（FEM）用于计算和分析PCF的结构。通过调整液体分析物的折射率来研究 PCF 的光学特性。通过优化，光纤传感器在 1.350 至 1.460 的折射率范围内实现了 0.9979 和 1931.03 nm / RIU 的高线性折射率灵敏度，并实现了 1 mm 的短 PCF 长度。使得传感器足够小，可以集成到检测设备中，有望在生物监测、环境监测、化工生产等领域获得重要应用。