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research article
Simplex-coded BOTDA fiber sensor with 1 m spatial resolution over a 50 km range
2010
In this Letter, we propose the use of optical pulse coding techniques for long-range distributed sensors based on Brillouin optical time-domain analysis (BOTDA). Compared to conventional BOTDA sensors, optical coding provides a significant sensing-range enhancement, allowing for temperature and strain measurements with 1 m spatial resolution over 50 km of standard single-mode fiber, with an accuracy of 2.2°C/44 με, respectively.
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OL_35_259_2010_Soto.pdf
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