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分布式干涉型光纤振动传感器实验研究

, PP. 361-367

Keywords: M-Z,光纤传感器,干涉型,振动

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Abstract:

为实现无电磁干扰的小区周界安全检测,开发出了一种新型的分布式干涉型光纤振动传感器,基于MZ光纤干涉型传感光路,采用干涉法检测光缆振动,构成小区光纤周界检测传感器,当传感光纤受到外界入侵扰动时,接收到的干涉条纹会产生明显的变化,从而给出周界安全预警。并分别以频率14.6678Hz和20.2012Hz的三角波作为调制信号进行了实验研究,结果显示,干涉型扰动探测系统非常灵敏,只要光缆有轻微的触动,波形就会有明显的改变,很容易区分有无外界的扰动发生,对安全防范意义重大。

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