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Proceedings Paper

Distributed strain and temperature sensing over 50 km of SMF with 1 m spatial resolution employing BOTDA and optical pulse coding
Author(s): Marcelo A. Soto; Gabriele Bolognini; Fabrizio Di Pasquale; Luc Thévenaz
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Paper Abstract

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 με respectively.

Paper Details

Date Published: 14 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 750383 (14 October 2009); doi: 10.1117/12.848791
Show Author Affiliations
Marcelo A. Soto, EPFL Swiss Federal Institute of Technology (Switzerland)
Scuola Superiore Sant'Anna (Italy)
Gabriele Bolognini, Scuola Superiore Sant'Anna (Italy)
Fabrizio Di Pasquale, Scuola Superiore Sant'Anna (Italy)
Luc Thévenaz, EPFL Swiss Federal Institute of Technology (Switzerland)

Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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