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波长切换技术用于对基于Mach Zehnder干扰仪的光学传感器进行相位查询

Lam Anh Bui, Hao Chen, Erwin H W Chan

|January 5, 2024

概括

一种新方法通过切换激光波长来准确测量马赫十度干扰仪的相位移. 这种技术提供了明确的实时测量,适合生物和医学传感应用.

科学领域:

光学和光子学在光学和光子学.
干涉测量是干涉测量的方法.
传感技术传感技术

背景情况:

马赫十度干扰仪 (MZIs) 对于各种传感应用至关重要.
准确而明确的相位移转确定对于基于MZI的传感至关重要.
现有的方法可能在范围,复杂性或适用性方面存在局限性.

研究的目的:

介绍一种新的方法,用于在马赫Zehnder干扰仪中明确地确定相位移.
为了实现实时,高精度的相位转移测量.
提供适合生物和医学传感的多功能方法.

主要方法:

使用连续波 (CW) 激光光的波长切换来照亮MZI.
在DC和开关频率上测量干扰仪输出幅度.
采用简单的检测,不需要传感器修改或激光电子接入.

主要成果:

在整个2π范围内展示了MZI相位移的明确测量.
实现实时测量,具有高可重复性和准确性.
精度主要受到光学频率漂移和激光功率波动的限制.

结论:

提出的方法为MZI相位转移的确定提供了一个强大的和简单的方法.
由于其非侵入性和简单性,其适用于生物和医疗传感的适用性得到了强调.
这种技术提升了基于MZI的传感平台的能力.

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