Long-range simplex-coded BOTDA sensor over 120 km distance employing optical preamplification

被引：105
作者：
Soto, Marcelo A. [1 ]
Bolognini, Gabriele [1 ]
Di Pasquale, Fabrizio [1 ]
机构：
[1] Scuola Super Sant Anna, I-56124 Pisa, Italy
来源：
OPTICS LETTERS | 2011年 / 36卷 / 02期
关键词：
RAMAN AMPLIFICATION; FIBER SENSOR;
D O I：
10.1364/OL.36.000232
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this Letter, we combine the use of optical preamplification at the receiver and optical pulse coding techniques with an optimized modulation format to effectively extend the sensing range of Brillouin optical time-domain analysis (BOTDA) sensors. Combining a return-to-zero modulation format with 25% duty cycle and linear gain preamplification allows for temperature and strain measurements over 120 km of standard single-mode fiber with 3 m spatial resolution and an rms strain-temperature accuracy of 3.1 degrees C/60 mu e respectively. (C) 2011 Optical Society of America
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收藏
页码：232 / 234
页数：3
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[1]   150-km-range distributed temperature sensor based on coherent detection of spontaneous Brillouin backscatter and in-line Raman amplification [J].
Alahbabi, MN ;
Cho, YT ;
Newson, TP .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2005, 22 (06) :1321-1324
[2]   A reconstruction technique for long-range stimulated Brillouin scattering distributed fibre-optic sensors: experimental results [J].
Minardo, A ;
Bernini, R ;
Zeni, L ;
Thevenaz, L ;
Briffod, F .
MEASUREMENT SCIENCE AND TECHNOLOGY, 2005, 16 (04) :900-908
[3]   A Simple Technique for Reducing Pump Depletion in Long-Range Distributed Brillouin Fiber Sensors [J].
Minardo, Aldo ;
Bernini, Romeo ;
Zeni, Luigi .
IEEE SENSORS JOURNAL, 2009, 9 (5-6) :633-634
[4]   Distributed Brillouin Fiber Sensor Assisted by First-Order Raman Amplification [J].
Rodriguez-Barrios, Felix ;
Martin-Lopez, Sonia ;
Carrasco-Sanz, Ana ;
Corredera, Pedro ;
Diego Ania-Castanol, Juan ;
Thevenaz, Luc ;
Gonzalez-Herraez, Miguel .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2010, 28 (15) :2162-2172
[5]   Analysis of pulse modulation format in coded BOTDA sensors [J].
Soto, Marcelo A. ;
Bolognini, Gabriele ;
Di Pasquale, Fabrizio .
OPTICS EXPRESS, 2010, 18 (14) :14878-14892
[6]   Simplex-coded BOTDA fiber sensor with 1 m spatial resolution over a 50 km range [J].
Soto, Marcelo A. ;
Bolognini, Gabriele ;
Di Pasquale, Fabrizio ;
Thevenaz, Luc .
OPTICS LETTERS, 2010, 35 (02) :259-261
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