Optimization of long-range BOTDA sensors with high resolution using first-order bi-directional Raman amplification

In this paper we perform an optimization of Brillouin optical time-domain analysis (BOTDA) sensors for achieving high resolution over long sensing ranges using distributed Raman amplification. By employing an optimized first-order bi-directional Raman amplification scheme and combining high-power fiber-Raman lasers and Fabry-Pérot lasers with low relative-intensity-noise (RIN), we demonstrate distributed sensing over 120 km of standard single-mode fiber with 2 meter spatial resolution and with a strain/temperature accuracy of 45με/2.1°C respectively.


Published in:
Optics Express, 19, 5, 4444
Year:
2011
Publisher:
Optical Society of America
ISSN:
1094-4087
Laboratories:




 Record created 2012-11-01, last modified 2018-03-17

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