Extending the sensing range of Brillouin optical time-domain analysis up to 325 km combining four optical repeaters

F. Gyger; E. Rochat; S. Chin; M. Niklès; L. Thévenaz

doi:10.1117/12.2059590

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2 June 2014 Extending the sensing range of Brillouin optical time-domain analysis up to 325 km combining four optical repeaters

F. Gyger, E. Rochat, S. Chin, M. Niklès, L. Thévenaz

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Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91576Q (2014) https://doi.org/10.1117/12.2059590
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

A novel scheme is proposed to extend the sensing range of Brillouin optical time-domain analyzers (BOTDA). Specially-designed erbium doped fiber amplifier (EDFA) repeaters are located every 65km fiber along the sensing cable to achieve a total sensing length of 325km, corresponding to a 650km loop. At the end of the sensing fibre, we experimentally demonstrated a measurement repeatability of 2°C (2σ) using a three meters spatial resolution.

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F. Gyger, E. Rochat, S. Chin, M. Niklès, and L. Thévenaz "Extending the sensing range of Brillouin optical time-domain analysis up to 325 km combining four optical repeaters ", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91576Q (2 June 2014); https://doi.org/10.1117/12.2059590

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