概括
这项研究引入了一种新的纤维布拉格格网 (FBG) 解调方案,使用可调节的FBG和迈克尔森干扰仪. 该系统实现了非常准确的高精度温度和应变测量.
科学领域:
- 光电学是指光电子产品.
- 光纤传感传感器是指光纤传感器.
- 干涉测量是干涉测量的方法.
背景情况:
- 纤维布拉格网格 (FBGs) 对于传感应用至关重要.
- 高精度调制对于精确的基于FBG的测量至关重要.
- 现有的方法在实现高速和精确性方面面临挑战.
研究的目的:
- 为FBG开发一个高精度的信号解调方案.
- 提高基于FBG的传感系统的准确性和速度.
- 为了利用可调节的FBG和干扰测量来改进波长转移重建.
主要方法:
- 使用了迈克尔森干扰仪 (MI) 与压电变频器 (PZT) 调节的同位,多波长可调节的FBG (CMWT-FBG).
- 采用Savitzky-Golay (S-G) 拟合算法,精确地定位干扰信号外峰值.
- 通过覆盖其波长转移来重建传感FBG的中心波长变化.
主要成果:
- 达到1.33×10−6°C的温度准确度.
- 证明了1.04×10-5的应变精度.
- 在高速和高精度测量方面,CMWT-FBGs-MI系统显示出了竞争优势.
结论:
- 拟议的方案在FBG信号调节方面取得了重大进展.
- 该系统为高精度传感应用提供了一个强大的平台.
- 这项工作支持了先进光学传感技术的进一步发展.
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