光通信技术2026，Vol.50Issue(2)：18-25,8.DOI:10.13921/j.cnki.issn1002-5561.2026.02.004
基于Ag-Ta2O5双侧抛磨U型PCF-SPR折射率传感器
Ag-Ta2O5-based double-sided polished U-shaped PCF-SPR refractive index sensor
摘要
Abstract
To address the issues of complex fabrication and limited detection range in existing photonic crystal fiber surface plasmon resonance sensors,a refractive index sensor based on an Ag-Ta2O5 double-sided polished U-shaped photonic crystal fi-ber surface plasmon resonance(PCF-SPR)is designed.The sensor constructs a U-shaped groove through a conventional polish-ing process,with a nano-Ag layer and a Ta2O5 protective layer sequentially coated inside the groove to enhance the coupling be-tween the core mode and the plasmon mode.Numerical simulation optimization is performed using the finite element method.Simulation results show that when the refractive index detection range is 1.16～1.36,the maximum wavelength sensitivity reaches 25,500 nm/RIU,the amplitude sensitivity reaches 736.86 RIU⁻¹,and the theoretical resolution reaches 3.92×10⁻⁶ RIU.关键词
光子晶体光纤/表面等离子体共振/波长灵敏度/振幅灵敏度/折射率传感器Key words
photonic crystal fiber/surface plasmon resonance/wavelength sensitivity/amplitude sensitivity/refractive index sensor分类
信息技术与安全科学引用本文复制引用
张玉,田贺,卢敏,钟普凡,何晏,习述宇,唐剑..基于Ag-Ta2O5双侧抛磨U型PCF-SPR折射率传感器[J].光通信技术,2026,50(2):18-25,8.基金项目
国家自然科学基金项目(62265002)资助 （62265002）
广西自然科学基金粤桂联合重点项目(2022GXNSFDA080006)资助 （2022GXNSFDA080006）
广西师范大学教育教学改革项目(2024JGB31)资助. （2024JGB31）
