Distributed Fiber-optic Vibration Sensor with Enhanced Response Bandwidth and High Signal-to-noise Ratio

被引：0
|
作者：
Chen, Dian [1 ]
Liu, Qingwen [1 ]
Fan, Xinyu [1 ]
He, Zuyuan [1 ]
机构：
[1] Shanghai Jiao Tong Univ, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China
来源：
2017 25TH INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS (OFS) | 2017年 / 10323卷
基金：
中国国家自然科学基金;
关键词：
Rayleigh; vibration; OFDR; matched filter; DOMAIN REFLECTOMETRY; SPATIAL-RESOLUTION;
D O I：
10.1117/12.2265266
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel distributed fiber-optic vibration sensor (DVS) is proposed based on multi-pulse time-gated digital optical frequency domain reflectometry (TGD-OFDR), which can solve both the trade-off between the maximum measurable distance and the spatial resolution, and the one between the measurement distance and the vibration response bandwidth. A 21-kHz vibration is detected experimentally over 10-kilometer-long fiber, with a signal-to-noise ratio approaching 25 dB and a spatial resolution of 10 m.
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页数：4
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