Diaphragm based long cavity Fabry-Perot fiber acoustic sensor using phase generated carrier
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- 作者：Bin Liua ; Jie Lina ; Huan Liua ; Yuan Mab ; Lei Yanc ; Peng Jina ; p.jin@hit.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Acoustic testing ; Optical fiber measurements ; Fabry&ndash ; Perot interferometers
- 刊名：Optics Communications
- 出版年：2017
- 出版时间：1 January 2017
- 年：2017
- 卷：382
- 期：Complete
- 页码：514-518
- 全文大小：1428 K
文摘
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A diaphragm based long cavity F–P interferometric fiber acoustic sensor is proposed.
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An ultra-thin silver diaphragm is fabricated to detect the acoustic.
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The stable output of the narrow-linewidth EDFL simplifies PGC demodulation system.
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The sensor exhibits a phase sensitivity of about −140 dB re 1 rad/μPa at 2 kHz.