摘要
设计并制作了一种基于多模-细芯-多模光纤(MMF-TCF-MMF)结构的双参数测量传感器,在此结构中同时产生马赫-曾德尔干涉(MZI)与表面等离子体共振(SPR),来实现对折射率和温度的同时测量。该传感器中的两段多模光纤(MMF)作为输入输出耦合器,细芯光纤(TCF)镀上一层金属银膜作为传感臂。实验结果表明,MZI和SPR在1.333~1.412 RIU范围内折射率灵敏度分别为-70.373 nm/RIU和4888.77 nm/RIU,在20~80℃范围内温度灵敏度分别为73.48 pm/℃和-0.3215 nm/℃。采用灵敏度矩阵实现了双参数测量,可解决折射率传感器温度的交叉敏感。该传感器成本低、灵敏度高、制作简单,在生物化学医疗检测领域有良好的应用前景。
This study designs and fabricates a dual-parameter measurement sensor based on a multi-mode thin-core multimode fiber structure.Mach-Zehnder interference(MZI) and surface plasmon resonance(SPR) are simultaneously generated in this structure to measure the refractive index and temperature.Two multi-mode fibers(MMFs) are used as the input and output couplers,and the thin-core fiber(TCF) is coated with a metallic silver film as the sensing arm.The refractive index sensitivity of MZI and SPR is-70.373 nm/RIU and 4888.77 nm/RIU in the range of 1.333-1.412 RIU,and the temperature sensitivity is 73.48 pm/℃ and-0.3215 nm/℃ in the range of 20-80 ℃,respectively.The sensitivity matrix is used to realize the two-parameter measurement,resolving the cross-sensitivity of the temperature of the refractive index sensor.The sensor is characterized by low cost,high sensitivity,and simple fabrication.Moreover,it has good application prospects in biochemical medical detection.
作者
胡凯
葛益娴
孙萌萌
贾磊
Hu Kai;Ge Yixian;Sun Mengmeng;Jia Lei(College of Electronics and Information Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,Jiangsu,China;Jiangsu Collaborative Innovation Center for Atmospheric Environment and Equipment Technology,Nanjing 210044,Jiangsu,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2023年第19期236-242,共7页
Laser & Optoelectronics Progress
基金
国家自然科学基金(61307061)。
关键词
光纤传感
纤芯失配
折射率和温度
马赫-曾德尔干涉
表面等离子体共振
optical fiber sensing
fiber core mismatch
refractive index and temperature
MachZehnder interference
surface plasmon resonance
