High resolution acoustic emission detection system based on 3 × 3 coupler interrogation technology and random fiber laser
optical fiber sensors conference（2021）
摘要
A random narrow linewidth fiber laser with a π-FBG is used as the acoustic emission (AE) sensor. A high AE detection resolution of ~0.281 fe/√Hz and a signal-to-noise ratio of 58 dB are obtained.
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关键词
acoustic emission detection system,acoustic emission,coupler interrogation technology
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