Distributed strain and temperature sensing over 50 km of SMF with 1 m spatial resolution employing BOTDA and optical pulse coding

In this paper we demonstrate a long-range distributed strain and temperature optical fiber sensor using Brillouin optical time-domain analysis in conjunction with optical pulse coding. Compared to standard BOTDA, pulse coding provides higher signal-to-noise ratio at the same pump peak power, overcoming the limitations induced by pump depletion and modulation instability, and allowing to achieve a record of 1 meter spatial resolution over 50 km of standard single mode fiber with temperature and strain resolution of 2.2 °C and 44 µepsilon respectively.


Editor(s):
Jones, Julian D. C.
Published in:
Proceedings of the 20th International Conference on Optical Fibre Sensors, Proc. SPIE 7503, 750383-4
Presented at:
20th International Conference on Optical Fibre Sensors, Edinburgh, United Kingdom, October 5, 2009
Year:
2009
Publisher:
SPIE
Note:
Postdeadline Paper
Laboratories:




 Record created 2010-01-20, last modified 2018-09-13

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