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

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

Gyger, Flavien  
•
Rochat, Etienne
•
Chin, Sanghoon
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2014
Proc. SPIE
23rd International Conference on Optical Fibre Sensors

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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OFS23 Extending the sensing range 91576Q.pdf

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