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Sensors 2018, 18(5), 1600;

63 km BOFDA for Temperature and Strain Monitoring

Bundesanstalt für Materialforschung und -prüfung, Unter den Eichen 44-46, 12203 Berlin, Germany
Author to whom correspondence should be addressed.
Received: 26 March 2018 / Revised: 11 May 2018 / Accepted: 15 May 2018 / Published: 17 May 2018
(This article belongs to the Section Physical Sensors)
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We demonstrate (and are the first to do so) 63 km Brillouin Optical Frequency-Domain Analysis (BOFDA) for temperature and strain monitoring using a 100 km fiber loop. The use of BOFDA for long-range applications can be considered a novel approach, as previous investigations focused on the utilization of Brillouin Optical Time-Domain Reflectometry and Analysis (BOTDR and BOTDA, respectively). At 51.7 km, a 100 m hotspot (37 C) was detected without using distributed Raman amplification or image processing. View Full-Text
Keywords: distributed sensing; stimulated Brillouin scattering; fiber optics sensors distributed sensing; stimulated Brillouin scattering; fiber optics sensors

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Kapa, T.; Schreier, A.; Krebber, K. 63 km BOFDA for Temperature and Strain Monitoring. Sensors 2018, 18, 1600.

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