激光与光电子学进展, 2023, 60 (11): 1106025, 网络出版: 2023-06-07 复制并引用该论文  被引通知

图 & 表

图 1. 微纳光纤传感器结构示意图

Fig. 1. Schematic diagram of micro-nano fiber sensor

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图 2. 光纤拉锥系统示意图

Fig. 2. Schematic diagram of optical fiber tapering system

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图 3. 光纤表面功能化的示意图。（a）KOH溶液处理产生羟基；（b）硅烷化试剂处理产生羧基；（c）将EDTA螯合剂固定在光纤传感器表面；（d）功能化后的光纤传感器

Fig. 3. Schematic diagram of fiber surface functionalization. (a) Hydroxyl group is produced by KOH solution treatment; (b) treatment with silanizing reagents to produce carboxyl groups; (c) immobilization of the EDTA on surface of optical fiber sensor; (d) functionalized fiber optic sensor

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图 4. 实验装置示意图

Fig. 4. Schematic diagram of the experimental setup

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图 5. 传感器的折射率灵敏度图。（a）传感器S₁在折射率1.33附近的光谱图；（b）传感器S₁、S₂和S₃波长漂移与折射率的关系曲线

Fig. 5. Refractive index sensitivity diagram of the sensor. (a) Spectra of the sensor S₁ near refractive index 1.33; (b) relationship between wavelength shift and refractive index of sensor S₁, S₂, and S₃

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图 6. 温度特性图。（a）传感器在30~50 ℃温度范围内的光谱响应；（b）传感器波长变化与温度变化的线性关系图

Fig. 6. Temperature characteristics. (a) Spectral response of the sensor in the temperature range of 30-50 ℃; (b) linear relationship between sensor wavelength change and temperature change

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图 7. 实验结果图。（a）传感器在去离子水里光谱随时间的响应；（b）传感器在去离子水里15 min的漂移量；（c）波长变化与Pb²⁺浓度的关系曲线；（d）当传感器浸入Pb²⁺ （100 ng/mL）溶液中时的光谱随时间的响应；（e）传感器浸入不同Pb²⁺溶液浓度光谱漂移量随时间的变化曲线

Fig. 7. Experimental results. (a) Spectral response of sensors in deionized water over time; (b) drift of sensors in deionized water for 15 min; (c) relationship curve between wavelength shift and Pb²⁺ concentration; (d) spectral response over time when the sensor was immersed in Pb²⁺(100 ng/mL) solution; (e) spectral drift of sensors immersed in different Pb²⁺ solution concentrations over time

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表 1不同质量浓度的铅离子溶液对应的漂移量

Table1. Drift corresponding to different mass concentrations of lead ion solutions

Concentration of Pb2+ /（ng·mL-1） Wavelength shift /nm 1 0.2347 10 0.4476 100 0.6069 1×103 0.9822

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陈倩, 吴强, 刘彬, 刘娟, 胡莹莹, 何兴道. 螯合剂修饰拉锥光纤传感器对铅离子浓度的检测研究[J]. 激光与光电子学进展, 2023, 60(11): 1106025. Qian Chen, Qiang Wu, Bin Liu, Juan Liu, Yingying Hu, Xingdao He. Study on Determination of Lead Ion Concentration by Chelating Agent Modified Tapered Fiber Optic Sensor[J]. Laser & Optoelectronics Progress, 2023, 60(11): 1106025.