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

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.


Published in:
Proc. SPIE, 9157, 91576Q
Presented at:
23rd International Conference on Optical Fibre Sensors, Santander, Spain, June 2-6, 2014
Year:
2014
Publisher:
SPIE
Keywords:
Laboratories:




 Record created 2014-07-14, last modified 2018-09-13

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