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Proceedings Paper

Extending the sensing range of Brillouin optical time-domain analysis up to 325 km combining four optical repeaters
Author(s): F. Gyger; E. Rochat; S. Chin; M. Niklès; L. Thévenaz
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Paper 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.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91576Q (2 June 2014); doi: 10.1117/12.2059590
Show Author Affiliations
F. Gyger, Omnisens S.A. (Switzerland)
E. Rochat, Omnisens S.A. (Switzerland)
S. Chin, Omnisens S.A. (Switzerland)
M. Niklès, Omnisens S.A. (Switzerland)
L. Thévenaz, Ecole Polytechnique Fédérale de Lausanne (Switzerland)


Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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