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Proceedings Paper

BOTDA sensor with 2-m spatial resolution over 120 km distance using bi-directional distributed Raman amplification
Author(s): Marcelo A. Soto; Stefano Faralli; Mohammad Taki; Gabriele Bolognini; Fabrizio Di Pasquale
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Paper Abstract

In this paper we propose the use of optimized bi-directional distributed Raman amplification to enhance the operating range of Brillouin optical time-domain analysis (BOTDA) sensors. In particular by combining high-power fiber-Raman lasers and polarization-multiplexed Fabry-Pérot lasers operating at 1450 nm with low relative-intensity-noise (RIN), we demonstrate distributed sensing (using first-order Raman amplification) over 120 km of standard single-mode fiber with 2 meter spatial resolution and with a strain/temperature accuracy of 45με/2.1°C respectively.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775325 (17 May 2011); doi: 10.1117/12.884979
Show Author Affiliations
Marcelo A. Soto, Scuola Superiore Sant'Anna (Italy)
Stefano Faralli, Scuola Superiore Sant'Anna (Italy)
Mohammad Taki, Scuola Superiore Sant'Anna (Italy)
Gabriele Bolognini, Scuola Superiore Sant'Anna (Italy)
Fabrizio Di Pasquale, Scuola Superiore Sant'Anna (Italy)


Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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