Long-range BOTDA sensing using optical pulse coding and single source bi-directional distributed Raman amplification
Taki, Mohammad; Soto, Marcelo A.; Di Pasquale, Fabrizio; Bolognini, Gabriele
2011

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Abstract

In this paper we present a Brillouin optical-time domain analysis (BOTDA) sensor combining optimized optical pulse coding with return-to-zero (RZ) modulation format and first-order bi-directional Raman amplification, using a single, shared, high relative-intensity-noise (RIN) pump source. We show that coding provides great benefits in sensing performance, even when employing noisy high-RIN Raman fiber-lasers degrading single-pulse BOTDA-schemes. Combining pulse coding with the use of a single high-power source for Raman amplification allows us to achieve distributed sensing over 120 km SMF, achieving 2.3 m spatial resolution with 52με/2.6°C strain/temperature resolutions.

Details

Title Long-range BOTDA sensing using optical pulse coding and single source bi-directional distributed Raman amplification
Author(s) Taki, Mohammad ; Soto, Marcelo A. ; Di Pasquale, Fabrizio ; Bolognini, Gabriele
Published in 2011 IEEE SENSORS Proceedings
Pages 382-385
Conference 2011 IEEE Sensors, Limerick, Ireland, 28-31 October 2011
Date 2011
Publisher IEEE
DOI https://doi.org/10.1109/ICSENS.2011.6127160
Laboratories STI
Record Appears in Scientific production and competences > Unattributed publications > STI - STI - Unattributed publications
Scientific production and competences > STI - School of Engineering > STI - Unattributed publications
Work outside EPFL
Conference Papers
Published
Record creation date 2012-11-01

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