基于级联的MZI上下渐变的 hetero-core 结构的广泛范围的pH 传感器
Applied optics
|June 10, 2024
概括
这项研究引入了一种新的光纤传感器,用于同时在两个位置监测pH值. 基于马赫-泽恩德干扰仪 (MZI) 的传感器使用独特的上下渐变 (UDT) 结构进行精确的双点pH检测.
科学领域:
- 光子学和传感技术
- 化学传感器 化学传感器
- 光纤仪器仪表仪器仪器仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表
背景情况:
- 马赫-泽恩德干扰仪 (MZIs) 广泛用于传感应用.
- 同时的多点测量对于先进的环境监测至关重要.
- 异核纤维结构为传感器开发提供了独特的光学特性.
研究的目的:
- 展示第一个能够在两个不同的空间位置同时测量pH值的光纤传感器.
- 开发一种新的传感器架构,使用级联的马赫-泽恩德干扰仪与上下渐变 (UDT) 异质核纤维结构.
- 为了研究双感应点的pH灵敏度和性能.
主要方法:
- 使用单模纤维 (SMF) 和无核纤维 (NCF) 制造两个级联 MZI 结构 (I 和 II).
- 通过过度融合拼接创建UDT异质核心纤维结构,将上作为分割器/组合器和下作为减弱器.
- 连接两个传感器结构以实现具有明显干扰下降的双传感点.
主要成果:
- 拟议的传感器成功地在两个空间位置 (传感点I和II) 实现了同时测量pH值.
- 传感点I显示了pH为1.0428 nm/pH的pH敏感度,对于pH为8-14.
- 传感点II显示,对于pH1-7的pH敏感度为-1.7857nm/pH.
结论:
- 开发的双点pH传感器,基于级联的UDT异质核纤维MZIs,有效用于同时检测pH值.
- 传感器在两个不同的空间位置表现出不同的灵敏度,使得多功能pH监测成为可能.
- 这项技术在各种环境中具有实时,多位置pH分析的巨大潜力.
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