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Dual-Channel and Dual-Core Plasmonic Sensor–Based Photonic Crystal Fiber for Refractive Index Sensing
Plasmonics ( IF 3 ) Pub Date : 2021-08-26 , DOI: 10.1007/s11468-021-01518-2
Shengxi Jiao 1 , Xiaolei Ren 1, 2 , Hanrui Yang 1 , Shibo Xu 1 , Xinzhi Li 1
Affiliation  

A dual-core photonic crystal fiber (PCF) with dual-channel-based surface plasmon resonance (SPR) sensor is designed. The silver and gold films are severally coated in the inner walls of two large ring detection channels to excite the plasmon modes, which can make the designed sensor achieve the dual-channel sensing. The effect of structure parameters on the sensing properties and loss spectrum is numerically analyzed by finite element method (FEM). When the analyte refractive index (RI) changes from 1.340 to 1.360, the average spectral sensitivities of 4280 and 3940 nm/RIU are obtained for the left and right channels, corresponding to the RI resolutions of 2.34 × 10−5 and 2.54 × 10−5 RIU, respectively. The simulation results suggest that the designed dual-channel sensor can realize highly sensitive detection of two analytes simultaneously, which has a wide application in the fields of biomedical analysis and environmental monitoring.



中文翻译:

用于折射率传感的基于双通道和双芯等离子体传感器的光子晶体光纤

设计了一种具有双通道表面等离子体共振(SPR)传感器的双芯光子晶体光纤(PCF)。银膜和金膜分别涂覆在两个大环检测通道的内壁,以激发等离子体模式,使设计的传感器实现双通道传感。通过有限元法(FEM)数值分析了结构参数对传感特性和损耗谱的影响。当分析物折射率(RI)从1.340变为1.360时,左右通道分别获得4280和3940 nm/RIU的平均光谱灵敏度,对应的RI分辨率分别为2.34×10 -5和2.54×10 - 5RIU,分别。仿真结果表明,所设计的双通道传感器可以同时实现对两种分析物的高灵敏度检测,在生物医学分析和环境监测领域具有广泛的应用。

更新日期:2021-08-27
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