Vibration Waveform Reproduction and Location of OTDR Based Distributed Optical-Fiber Vibration Sensing System

被引：2
|
作者：
Zhu, Hui [1 ]
Pan, Chao [1 ]
Sun, Xiaohan [1 ]
机构：
[1] Southeast Univ, Natl Res Ctr Opt Sensing Commun Integrated Networ, Nanjing 210096, Jiangsu, Peoples R China
来源：
QUANTUM SENSING AND NANOPHOTONIC DEVICES XI | 2014年 / 8993卷
关键词：
distributed optical-fiber sensor; OTDR; vibration waveform reproduction; location;
D O I：
10.1117/12.2041143
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：
In this paper, the scheme for both reproducing vibration waveform and locating disturbed places in the OTDR based distributed optical fiber vibration sensing systems is proposed and demonstrated. Based on the sampling law, the vibration waveform is reproduced from the detecting pulses including original sensing signals by denoising selectively, adjusting bias voltage and band-pass filtering. The vibrations at the frequencies of 500Hz and 1000Hz have been experimentally located and reproduced, respectively, and the highest frequency of 1 kHz for reproducing vibration waveform is realized at the repeat frequency of 2 kHz for the laser.
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页数：6
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