Pushing the Reach of Fiber Distributed Acoustic Sensing to 125 km Without the Use of Amplification

被引：26

作者：

Cedilnik, Gregor ^{[1
]}

Lees, Gareth ^{[1
]}

Schmidt, Poul Erik ^{[2
]}

Herstrom, Soren ^{[2
]}

Geisler, Tommy ^{[2
]}

机构：

[1] AP Sensing GmbH, D-71034 Boblingen, Germany

[2] OFS, DK-2605 Brondbyvester, Denmark

来源：

IEEE SENSORS LETTERS | 2019年 / 3卷 / 03期

关键词：

Sensor integration; distributed acoustic sensing (DAS); fiber optic sensing; long reach;

D O I：

10.1109/LSENS.2019.2895249

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：

We report the longest reach fiber based distributed acoustic sensor (DAS) without inline amplification. A measurement range exceeding 112 km, and 125 km if the far end is optimized, is realized with a suitable signal to noise ratio (SNR) for real-world applications. This is achieved by a DAS system optimized for long distance measurements and a combination of different fiber types optimized either for low loss or for high backscatter coefficient.

引用

页数：4

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