Polymer diaphragm based sensitive fiber optic Fabry-Perot acoustic sensor

• 来源期刊: 中国光学快报(英文版)
• 学科: 工学
• 关键词: 声学传感器 聚合物膜片 敏感元件 光纤 光学特性 高分子材料 强度解调 频率范围
• 年，卷（期）: 2010,（3）
• 所属期刊栏目: Fiber Optics and Optical Communications
• 页码范围: 266-269
• 页数: 4页
• 分类号: TP212 U666.7
• 语种: 英文

摘要

A sensitive polymer diaphragm based fiber Fabry-Perot(F-P) sensor for aeroacoustic wave measurement is presented.A novel polymer material poly(phthalazinone ether sulfone ketone)(PPESK) diaphragm is used as the acoustic sensing element.The effective dimensions of the diaphragm are 4 mm in diameter and 6μm in thickness.Owing to the good mechanical and optical features of the diaphragm and application of the interferometric/intensity demodulation,a system sensitivity of 31 mV/Pa is achieved in the frequenc...