基于D型光子晶体光纤的表面等离子体共振传感器  

Surface plasmon resonance sensor based on D-shaped photonic crystal fiber

作　　者：岳俊彤 王茜 梁英爽 YUE Juntong;WANG Qian;LIANG Yingshuang(School of Science,University of Science and Technology Liaoning,Anshan 114051,China)

机构地区：[1]辽宁科技大学理学院,辽宁鞍山114051

出　　处：《辽宁科技大学学报》2024年第4期287-292,共6页Journal of University of Science and Technology Liaoning

基　　金：国家自然科学基金青年基金资助项目(11504152);辽宁省教育厅项目(2019LNQN04)。

摘　　要：本文提出一种基于D型高灵敏度光子晶体光纤的表面等离子体共振低折射率传感器。D型光子晶体光纤结构更容易镀膜,且便于填充分析物,利用开口镀金结构能够更多激发等离激元。采用有限元法对其结构进行数值模拟,选择分析物折射率范围为1.2~1.29,研究空气孔、开口直径、镀膜厚度等结构参数对传感器性能的影响,对其结构进行优化。当分析物折射率为1.29时,传感器最大灵敏度达到17000 nm/RIU,分辨率达到6.0×10^(-6) RIU。This paper proposes a D-shaped high-sensitivity photonic crystal fiber low refractive index sensor based on surface plasmon resonance.The D-shaped photonic crystal fiber structure is easier to coat,and it is convenient to fill the analyte.The use of an open gold-coated structure can excite more plasmons.The finite element method was utilized to numerically simulate its structure,and the effects of structural parameters such as air holes,opening diameter,and coating thickness on the sensor performance were investigated.According to the numerical simulation results,the structure is optimized.When the refractive index range of the analyte is 1.2~1.29,the maximum sensitivity of the sensor can reach 17000 nm/RIU when the refractive index of the analyte is 1.29,and the resolution can reach 6.0×10^(-6) RIU.

关 键 词：表面等离子体共振 光子晶体光纤 折射率传感器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]