光学与光电技术, 2004, 2 (5): 40, 网络出版: 2006-05-22
基于全光纤马赫-曾德尔干涉仪的微位移传感研究
Research on Mini-Displacement Sensing Based on All-Fiber Mach-Zehnder Interferometer
马赫-曾德尔干涉仪 微位移传感 相位调制 全光纤 Mach-zehnder interferometer mini-displacement sensor phase modulation all-fiber
摘要
研究了一种基于全光纤马赫-曾德尔(Mach-Zehnder)干涉仪的高灵敏度微位移传感器,将干涉仪的一个臂固定在微动平台上,在消除环境干扰的情况下,通过对干涉仪臂的拉伸,从光谱仪观察干涉谱线中某一特定波长的移动与拉伸长度成正比,从而实现了一种位相调制型微位移传感器.当位移变化0.0020mm时,波长移动了0.61nm,调谐速率为305nm/mm,线性拟合度为0.9994.
Abstract
A high-resolution displacement sensor based on all-fiber Mach-zehnder interferometer is demonstrated in this paper. Sticking one arm of the interferometer on the translation stage, in the case of elimination of environmental interference, when the arm is being stretched, the shifting of a certain wavelength through OSA can be seen. When the displacement is changed 0.0020mm, the wavelength shifts 0.61nm and the tuning efficiency occurs 305nm/mm. The shifting of the wavelength is linear to the displacement and the linear fitting is 0.9994.
刘士奎, 张金涛, 刘盛春. 基于全光纤马赫-曾德尔干涉仪的微位移传感研究[J]. 光学与光电技术, 2004, 2(5): 40. 刘士奎, 张金涛, 刘盛春. Research on Mini-Displacement Sensing Based on All-Fiber Mach-Zehnder Interferometer[J]. OPTICS & OPTOELECTRONIC TECHNOLOGY, 2004, 2(5): 40.
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