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提出了一种可频分复用基于光放大的光纤Fizeau应变传感器的方法 ,从原理上解决了现有光纤Fabry Perot传感器固有的两大弱点 :信号弱和复用难 .利用掺铒光纤的放大作用 ,既形成宽带光源 ,又放大了微弱的信号 .描述了该应变传感器系统的结构、原理及实验结果 .实验表明该复用传感器应变测量精度可达± 10 με,可满足实际应用的要求 .
A method of frequency-multiplexing optical Fizeau strain sensor based on optical amplification is proposed, which solves the inherent weaknesses of the existing optical fiber Fabry Perot sensors in principle: weak signal and difficult reuse. The use of erbium-doped fiber amplification The structure, principle and experimental results of the strain sensor system are described.Experiments show that the strain gauge measurement accuracy of the multiplex sensor can reach ± 10 με, which can meet the practical application requirements.