D-Shaped Photonic Crystal Fiber Plasmonic Sensor Based on Silver-Titanium Dioxide Composite Micro-grating

被引：47
作者：
Fang, Hairui [1 ]
Wei, Chenjing [1 ]
Yang, Hanrui [1 ]
Zhao, Bo [1 ]
Yuan, Long [2 ]
Li, Jing [3 ]
机构：
[1] Northeast Elect Power Univ, Sch Automat Engn, Jilin 132012, Jilin, Peoples R China
[2] Jilin Normal Univ, Minist Educ, Key Lab Funct Mat Phys & Chem, Changchun 130103, Peoples R China
[3] Jilin Petrochem Co, Res Inst, Jilin 132012, Jilin, Peoples R China
来源：
PLASMONICS | 2021年 / 16卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Photonic crystal fiber; Surface plasmon resonance; Ag-TiO2 composite micro-grating; Wavelength sensitivity; Amplitude sensitivity; REFRACTIVE-INDEX SENSOR; MICROSTRUCTURED-OPTICAL-FIBER; RESONANCE SENSOR; SPR SENSOR; BIOSENSOR; DESIGN;
D O I：
10.1007/s11468-021-01468-9
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A D-shaped photonic crystal fiber surface plasmon resonance (PCF-SPR) sensor is proposed for highly sensitive liquid refractive index sensing. Taking sensing sensitivity into consideration, silver-titanium dioxide (Ag-TiO2) composite micro-grating is introduced and SPR is excited within Ag-TiO2 composite micro-grating at the flat D-shaped PCF surface. The finite element method (FEM) based on COMSOL is applied to analyzed numerically response characteristics of the D-shaped sensor, which was research dependent on wavelength and amplitude interrogation method. The results displayed that designed sensor reached excellent amplitude sensitivity of 2245 RIU-1 and wavelength sensitivity of 10,300 nm/RIU for liquid refractive index varying between 1.33 and 1.40. And it also shows that the maximum figure of merit was 480 RIU-1 for proposed sensor after optimization of structural parameters, which has a great prospect in the biological detection and chemical analysis.
引用
收藏
页码：2049 / 2059
页数：11
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