Wei Yong, Li Lingling, Liu Chunlan, Su Yudong, Zhao Xiaoling, Wu Ping, Hu Jiangxi, Wang Rui, Ran Ze, Zhu Dong
Appl Opt. 2021 Feb 10;60(5):1366-1372. doi: 10.1364/AO.415885.
We propose a novel dual-channel fiber surface plasmon resonance (SPR) sensor based on a metalized core. Using a polymer, the cladding and coating layer of the sensor coated with a metal sensing film are restored. The parameters of the sensor are determined after studying the influence of different polymers and sensing films on the dynamic range and sensing sensitivity. A silver film coated with UV-curable adhesive and a gold film coated with polydimethylsiloxane (PDMS) with respective sensing sensitivities of up to 1.39 and 1.48 nm/°C are selected after optimization to construct the dual-channel sensor. A dual-channel fiber SPR temperature compensation refractive index sensor with improved accuracy is then constructed with a 20-nm gold film for the refractive index sensing unit and a 50-nm gold film coated with PDMS for the temperature sensing unit. Owing to its complete fiber structure, the SPR sensor has good mechanical properties and high practical value, and it can be easily applied to real-time temperature measurements and temperature compensation in various fields.
我们提出了一种基于金属化纤芯的新型双通道光纤表面等离子体共振（SPR）传感器。利用一种聚合物，恢复了涂覆有金属传感膜的传感器的包层和涂层。在研究了不同聚合物和传感膜对动态范围和传感灵敏度的影响之后，确定了传感器的参数。经过优化，选择了分别具有高达1.39和1.48 nm/°C传感灵敏度的涂覆有紫外光固化粘合剂的银膜和涂覆有聚二甲基硅氧烷（PDMS）的金膜来构建双通道传感器。然后，用用于折射率传感单元的20 nm金膜和用于温度传感单元的涂覆有PDMS的50 nm金膜构建了一种精度提高的双通道光纤SPR温度补偿折射率传感器。由于其完整的光纤结构，该SPR传感器具有良好的机械性能和较高的实用价值，并且可以很容易地应用于各个领域的实时温度测量和温度补偿。
