State Key Laboratory of Synthetical Automation for Process Industries, College of Information Science and Engineering, Northeastern University, Shenyang 110819, China.
Sensors (Basel). 2021 May 29;21(11):3782. doi: 10.3390/s21113782.
This paper proposes a highly sensitive surface plasmon resonance (SPR) refractive index sensor based on the photonic crystal fiber (PCF). The optical properties of the PCF are investigated by modulating the refractive index of a liquid analyte. The finite element method (FEM) is used to calculate and analyze the PCF structure. After optimization, the fiber can achieve high linearity of 0.9931 and an average refractive index sensitivity of up to 14,771.4 nm/RIU over a refractive index range from 1.47 to 1.52, with the maximum wavelength sensitivity of 18,000.5 nm/RIU. The proposed structure can be used in various sensing applications, including biological monitoring, environmental monitoring, and chemical production with the modification and analysis of the proposed structure.
本文提出了一种基于光子晶体光纤（PCF）的高灵敏度表面等离子体共振（SPR）折射率传感器。通过调制液体分析物的折射率来研究 PCF 的光学特性。采用有限元法（FEM）对 PCF 结构进行计算和分析。经过优化，光纤在折射率范围为 1.47 到 1.52 时，线性度高达 0.9931，平均折射率灵敏度高达 14,771.4nm/RIU，最大波长灵敏度高达 18,000.5nm/RIU。通过对所提出结构的修改和分析，该结构可以用于各种传感应用，包括生物监测、环境监测和化学生产。
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