概括
一个新的光纤传感器使用洛伦茨力来检测磁场. 更小直径的三边芯纤维为磁场传感应用提供了更高的灵敏度.
科学领域:
- 光电学是指光电子产品.
- 材料科学 材料科学 材料科学
- 传感器技术 传感器技术
背景情况:
- 磁场传感器对于各种技术应用至关重要.
- 光纤传感器提供优势,如电磁免疫力和遥感能力.
- 开发高度灵敏和紧的磁场传感器仍然是一个活跃的研究领域.
研究的目的:
- 为了演示洛伦茨力磁场传感器,使用一种新型的覆盖物蚀刻异质集成光纤.
- 为了研究纤维直径对传感器性能的影响.
- 为了实现磁场检测的高灵敏度.
主要方法:
- 用三面芯 (TSNCF) 制造一个异质的集成光纤.
- 在磁场下的芯中利用电流产生的洛伦茨力诱导纤维振动.
- 使用马赫-泽恩德干扰仪来检测由光纤振动引起的相位变化.
- 将不同直径的TSNCF的传感性能进行比较.
主要成果:
- 在磁场下在TSNCF中注入电流时产生的洛伦茨力会引起纤维振动.
- 马赫-泽恩德干扰仪有效检测相位移,使磁场感知成为可能.
- 小直径的TSNCF由于降低了刚性而表现出更高的灵敏度.
- 90微米TSNCF的灵敏度是125微米单面芯纤维的3倍.
- 使用90μm-TSNCF,获得的最大灵敏度为9.91rad/mT.
结论:
- 展示的TSNCF是一个紧的,高度灵敏的,耐腐蚀的磁场传感器.
- 较小的纤维直径提高了传感器性能,90微米提供了卓越的灵敏度.
- 这项技术对先进的磁场传感应用具有重大潜力.
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