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

被引：15
|
作者：
Zhang, Xiaolei [1 ]
Zhang, Faxiang [1 ]
Jiang, Shaodong [1 ]
Min, Li [1 ]
Li, Ming [1 ]
Peng, Gangding [1 ]
Ni, Jiasheng [1 ]
Wang, Chang [1 ]
机构：
[1] Shandong Acad Sci, Shandong Key Lab Opt Fiber Sensing & Techonol, Laser Inst, Jinan 250014, Shandong, Peoples R China
来源：
PHOTONIC SENSORS | 2017年 / 7卷 / 04期
关键词：
Short cavity distributed feedback fiber laser; vector hydrophone; frequency response; phase noise; sensitivity;
D O I：
10.1007/s13320-017-0453-x
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
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.
引用
收藏
页码：325 / 328
页数：4
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