带载的马赫-泽恩德干扰仪用于绝对折射率传感
Isaac Doughan1, Kehinde Oyemakinwa2, Olli Ovaskainen2
1Center for Photonics Sciences, Department of Physics and Mathematics, University of Eastern Finland, 80101, Joensuu, Finland. isaac.doughan@uef.fi.
Scientific reports
|February 6, 2024
概括
这项研究引入了一种新的带载马赫-泽恩德干扰仪 (MZI),用于精确的液体折射率传感. 该设计通过利用分析物作为加载条来提高灵敏度,优于传统方法.
科学领域:
- 光子学和光学传感器传感器
- 集成光学 集成光学
- 化学传感技术 化学传感技术
背景情况:
- 马赫-泽恩德干扰仪 (MZIs) 对于光学传感至关重要.
- 传统的MZI设计在灵敏度和分析物相互作用方面存在局限性.
- 为精确的折射率测量开发增强的MZIs至关重要.
研究的目的:
- 设计,制造和表征一种新的带载MZI用于测量液体折射率.
- 通过使用分析物作为加载条来增强MZI的灵敏度.
- 为了证明与传统MZI设计相比,性能优越.
主要方法:
- 在SiO2晶圆上使用TiO2薄膜和nLOF电阻制造带载波导.
- 在传感区域实施大开口,以最大限度地提高分析物的相互作用.
- 使用乙醇-水溶液进行表征,以确定均的灵敏度.
主要成果:
- 在外中实现了高的封闭因子 (~23%) 以有效的 evanescent 场相互作用.
- 显示出0.128.8的同质灵敏度.
- 能够监测折射率变化,其变化最小值为10^-4.
结论:
- 新型带载MZI设计显著提高了对折射率测量的灵敏度.
- 该设计有效地利用分析物作为装载条,超越了传统的方法.
- 这项技术为先进的光学传感应用提供了一个有前途的平台.
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