Terahertz Refractive Index and Temperature Dual-Parameter Sensor Based on Surface Plasmon Resonance in Two-Channel Photonic Crystal Fiber

被引：0
|
作者：
Wang, Doudou [1 ]
Guo, Wenchuan [1 ]
Zou, Yizu [1 ]
Ma, Tian [2 ]
Wang, Weifeng [2 ]
Chen, Guoxiang [3 ]
机构：
[1] Xian Univ Sci & Technol, Coll Sci, Xian 710054, Peoples R China
[2] Xian Univ Sci & Technol, Coll Safety Sci & Engn, Xian 710054, Peoples R China
[3] Xian Shiyou Univ, Coll Sci, Xian 710065, Peoples R China
来源：
SENSORS | 2024年 / 24卷 / 19期
基金：
中国国家自然科学基金;
关键词：
terahertz; surface plasmon resonance; graphene; refractive index sensor; temperature sensor;
D O I：
10.3390/s24196225
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A terahertz photonic crystal fiber with two sensing channels was designed. Graphene coated on the micro-grooves in the cladding was used as plasma material to introduce tunability. The dispersion relation, mode coupling, and sensing characteristics of the fiber were studied using the finite element method. Ultrahigh sensitivity of 2.014 THz/RIU and 0.734 GHz/degrees C were obtained for analytes with refractive index in the range of 1.33 to 1.4 and environment temperature in the range of 10-60 degrees C, respectively. Refractive index resolution can reach the order of 10-5. The dual parameter simultaneous detection, dynamic tunable characteristics, and working in the low-frequency range of terahertz enable the designed photonic crystal fiber to have application prospects in the field of biosensing.
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页数：13
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