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Short Cavity DFB Fiber Laser Based Vector Hydrophone for Low Frequency Signal Detection

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Abstract

A short cavity distributed feedback (DFB) fiber laser is used for low frequency acoustic signal detection. Three DFB fiber lasers with different central wavelengths are chained together to make three-element vector hydrophone with proper sensitivity enhancement design, which has extensive and significant applications to underwater acoustic monitoring for the national defense, oil, gas exploration, and so on. By wavelength-phase demodulation, the lasing wavelength changes under different frequency signals can be interpreted, and the sensitivity is tested about 33 dB re pm/g. The frequency response range is rather flat from 5 Hz to 300 Hz.sensitivity

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DOI:10.1007/s13320-017-0453-x

所属栏目:Regular

基金项目:This work is supported by Shandong Key Research and Development Projects (No. 2015GSF115006), National Nature Science Foundation (No. 61605102), and Young Science Foundation of Shandong Academy of Sciences (No. 2016QN002).

收稿日期:2017-07-24

修改稿日期:2017-08-22

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Xiaolei ZHANG:Shandong Key Laboratory of Optical Fiber Sensing & Techonology, Laser Institute of Shandong Academy of Science,China, Jinan, 250014, China
Faxiang ZHANG:Shandong Key Laboratory of Optical Fiber Sensing & Techonology, Laser Institute of Shandong Academy of Science,China, Jinan, 250014, China
Shaodong JIANG:Shandong Key Laboratory of Optical Fiber Sensing & Techonology, Laser Institute of Shandong Academy of Science,China, Jinan, 250014, China
Li MIN:Shandong Key Laboratory of Optical Fiber Sensing & Techonology, Laser Institute of Shandong Academy of Science,China, Jinan, 250014, China
Ming LI:Shandong Key Laboratory of Optical Fiber Sensing & Techonology, Laser Institute of Shandong Academy of Science,China, Jinan, 250014, China
Gangding PENG:Shandong Key Laboratory of Optical Fiber Sensing & Techonology, Laser Institute of Shandong Academy of Science,China, Jinan, 250014, China
Jiasheng NI:Shandong Key Laboratory of Optical Fiber Sensing & Techonology, Laser Institute of Shandong Academy of Science,China, Jinan, 250014, China
Chang WANG:Shandong Key Laboratory of Optical Fiber Sensing & Techonology, Laser Institute of Shandong Academy of Science,China, Jinan, 250014, China

联系人作者:Chang WANG(bluestone469@hotmail.com)

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引用该论文

Xiaolei ZHANG,Faxiang ZHANG,Shaodong JIANG,Li MIN,Ming LI,Gangding PENG,Jiasheng NI,Chang WANG. Short Cavity DFB Fiber Laser Based Vector Hydrophone for Low Frequency Signal Detection[J]. Photonic Sensors, 2017, 7(4): 325-328

Xiaolei ZHANG,Faxiang ZHANG,Shaodong JIANG,Li MIN,Ming LI,Gangding PENG,Jiasheng NI,Chang WANG. Short Cavity DFB Fiber Laser Based Vector Hydrophone for Low Frequency Signal Detection[J]. Photonic Sensors, 2017, 7(4): 325-328

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