High sampling rate multi-pulse phase-sensitive OTDR employing frequency division multiplexing

被引：19

作者：

Pan, Zhengqing ^{[1
]}

Wang, Zhaoyong ^{[1
]}

Ye, Qing ^{[1
]}

Cai, Haiwen ^{[1
]}

Qu, Ronghui ^{[1
]}

Fang, Zujie ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai Key Lab All Solid State Laser & Appl Tec, Shanghai 201800, Peoples R China

来源：

23RD INTERNATIONAL CONFERENCE ON OPTICAL FIBRE SENSORS | 2014年 / 9157卷

关键词：

Phi-OTDR; High sampling rate; Rayleigh scattering; Frequency division multiplexing; TIME-DOMAIN REFLECTOMETER; INTRUSION-SENSOR SYSTEM;

D O I：

10.1117/12.2059729

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel high sampling rate multi-pulse phase-sensitive OTDR (Phi-OTDR) employing frequency division multiplexing (FDM) is proposed to increase the sampling rate of the long distance sensor system. Compared with the conventional Phi-OTDR, the new system owns much higher detection bandwidth as more probe pulses are allowed simultaneously traveling in the sensing fiber. The feasibility of the technique is experimentally verified. By multiplexing four different frequencies, we realize a experimental system with 20kHz vibration detection bandwidth over 10km sensing range.

引用

页数：4

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