摘要
表面等离子体共振(SPR)传感器常用的光纤处理方法易使光纤结构脆弱,从而导致机械性能下降,提出了一种基于细芯光纤(TCF)SPR原理的折射率传感器.通过使用单侧均匀涂覆金(Au)膜的多模光纤-细芯光纤-多模光纤(MMF-TCF-MMF)结构作为传感单元,折射率传感器能够在1.34~1.4161的范围内达到3045.69 nm/RIU的衰减谷宽度灵敏度和48.09 dB/RIU的能量损耗灵敏度;在1.34~1.3797的范围内达到112.21 nm/RIU的SPR峰波长灵敏度和-86.27 dB/RIU的SPR峰值灵敏度.实验结果表明:与传统SPR传感器相比,该传感器易制备,且机械稳定性和灵敏度高.
The common optical fiber processing methods of surface plasmon resonanee(SPR) sensors can easily make the optical fiber structure fragile, which leads to the decline of mechanical properties. A refractive index sensor based on thin core fiber(TCF) surface plasmon resonance SPR principle is proposed. Multimode optical fiber-thin core optical fiber-multimode optical fiber(MMF-TCF-MMF) structure with uniformly coated gold(Au) film on one side is used as sensing unit, and the refractive index sensor can reach 3045.69 nm/RIU attenuation Valley width sensitivity and 48.09 dB/RIU energy loss sensitivity in the range of 1.34~1.3797, and 112.21 nm/RIU SPR peak wavelength sensitivity and -86.27 dB/RIU SPR peak wavelength sensitivity in the range of 1.34~1.3797. PR peak sensitivity. The experimental results show that compared with traditional SPR sensors, the sensor is easy to fabricate and has high mechanical stability and sensitivity.
作者
王雨
韩飞
郎婷婷
赵春柳
WANG Yu;HAN Fei;LANG Tingting;ZHAO Chunliu(College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China)
出处
《光通信技术》
北大核心
2019年第8期32-34,共3页
Optical Communication Technology
基金
国家重点研发专项(批准号:2017YFC0805905)资助
