High-sensitivity ring-core photonic crystal fiber sensor based on surface plasmon resonance for ultra-low refractive index detection

被引：4
作者：
Xu, Luhui [1 ]
Peng, Chao [1 ]
Meng, Tongyu [2 ]
Shi, Ying [3 ]
Liu, Qiang [1 ]
Lv, Jingwei [1 ]
Liu, Wei [1 ]
Chu, Paul K. [4 ,5 ]
Liu, Chao [1 ]
机构：
[1] Northeast Petr Univ, Sch Phys & Elect Engn, Daqing 163318, Peoples R China
[2] Dalian Univ Technol, Leicester Int Inst, Dalian 124221, Peoples R China
[3] Northeast Petr Univ, Inst Unconvent Oil & Gas, Daqing 163318, Peoples R China
[4] City Univ Hong Kong, Dept Phys, Dept Mat Sci & Engn, Tat Chee Ave, Hong Kong, Peoples R China
[5] City Univ Hong Kong, Dept Biomed Engn, Tat Chee Ave, Hong Kong, Peoples R China
来源：
MODERN PHYSICS LETTERS B | 2024年 / 38卷 / 02期
基金：
中国博士后科学基金;
关键词：
Optical fiber sensing; surface plasmon resonance; photonic crystal fiber; low refractive index sensing; OPTICAL-FIBER; MODE-AREA;
D O I：
10.1142/S0217984923502160
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A novel ring-core photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR) is designed for ultra-low refractive index detection. A gold nanowire is coated on the outer surface of the PCF as a plasma material, greatly facilitating the manufacturing of the sensor. To achieve real-time detection, the analyte is located on the outside of the sensor. The mode coupling effect and main performance parameters are analyzed through finite element method. In addition, by optimizing several important structural parameters, the overall performance of the sensor has been greatly improved. The optimized sensor shows a maximum wavelength sensitivity of 26,000nm/RIU in the refractive index range of 1.14-1.26, maximum amplitude sensitivity of 300RIU(-1), as well as minimum resolution of 3.85x10(-6)RIU. The PCF-SPR sensor with outstanding properties has great potential in applications such as oil logging, biosensing, and chemical monitoring.
引用
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页数：22
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