Brillouin distributed sensor over a 200 km fiber-loop using a dual-pump configuration and colour coding

被引：0

作者：

Le Floch, S. ^{[1
]}

Sauser, F. ^{[1
]}

Llera, M. ^{[1
]}

Rochat, E. ^{[2
]}

机构：

[1] HE ARC, Rue Serre 7, CH-2610 St Imier, Switzerland

[2] Omnisens SA, CH-1110 Morges, Switzerland

来源：

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

关键词：

stimulated Brillouin scattering; fiber optics sensors; distributed fiber sensors; optical coding;

D O I：

10.1117/12.2057821

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, we propose a new Brillouin Optical Time Domain Analysis (BOTDA) set-up that combines simultaneous Brillouin gain/loss measurements with colour coding. This technique gives the advantage that the pump power can greatly be increased, compared to other coding schemes, thus increasing the sensing range. A measurement over a 200 km fiber-loop is performed, with a 3 meter spatial resolution and an accuracy of +/-3 MHz (2 sigma) at the end of the sensing fiber. To the best of our knowledge, this is the best result obtained with a Brillouin sensor without Raman amplification.

引用

页数：4

共 10 条

[1]

Angulo-Vinuesa X., 2012, 22 INT C OPT FIBR SE

[2] Raman-Assisted Brillouin Distributed Temperature Sensor Over 100 km Featuring 2 m Resolution and 1.2°C Uncertainty [J].