提高磁场传感的灵敏度,使用基于维尼尔效应的L形双烯-D-FBG和双循环光电子振荡器
Optics express
|November 22, 2024
概括
这项研究通过在双回路光电子振荡器 (OEO) 中使用维尼尔效应来提高磁场感应灵敏度. 新的设计实现了显著改进的磁场检测与内置的温度补偿.
科学领域:
- 光电学是指光电子产品.
- 传感器技术 传感器技术
- 材料科学 材料科学 材料科学
背景情况:
- 磁场传感对于各种应用至关重要.
- 传统的传感器通常面临着灵敏度和温度干扰的限制.
- 光电子振荡器 (OEO) 为高灵敏度测量提供了潜力.
研究的目的:
- 为了提高磁场传感的灵敏度.
- 在双循环OEO中利用弗尼耶效应来增强磁场检测.
- 开发一种温度补偿磁场传感器.
主要方法:
- 提出了一种双循环光电子振荡器 (OEO),采用级的L形特尔-D-纤维支架格子 (FBGs).
- 通过使用两条不同长度的纤维路径,采用了维尼尔效应.
- 将偏向磁场应用于Terfenol-D,并集成了一个温度补偿传感器.
主要成果:
- 使用维尼尔效应实现了 -16.54 kHz/mT 的磁场灵敏度,比单环 OEO 改进了 29 倍.
- 通过调整路径长度差异 (64 倍高于单循环) 进一步提高了对 -35.94 kHz/mT 的灵敏度.
- 证明了有效的温度补偿,将温度交叉声引起的磁场误差降低到0.03mT.
结论:
- 拟议的双循环OEO与级联的Terfenol-D-FBGs和Vernier效应显著提高了磁场传感灵敏度.
- 集成的温度补偿机制确保在不同的热条件下可靠的测量.
- 这种方法为高精度磁场监测提供了一个有希望的解决方案.
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