Simplex-Coded BOTDA Sensor Over 120-km SMF With 1-m Spatial Resolution Assisted by Optimized Bidirectional Raman Amplification

Bidirectional low-noise Raman amplification and simplex coding based on the return-to-zero modulation format are optimized through numerical simulations for long-range Brillouin optical time-domain analysis sensing. Experimental results are reported on sensing capabilities along 120-km distance with...

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Bibliographic Details
Published in:IEEE photonics technology letters 2012-10, Vol.24 (20), p.1823-1826
Main Authors: Soto, M. A., Taki, M., Bolognini, G., Pasquale, F. D.
Format: Article
Language:English
Subjects:
Brillouin scattering
fiber optics sensors
Optical fiber amplifiers
Optical fiber sensors
Probes
Raman amplification
Scattering
Spatial resolution
Stimulated emission
strain and temperature measurements
Temperature measurement
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Summary:Bidirectional low-noise Raman amplification and simplex coding based on the return-to-zero modulation format are optimized through numerical simulations for long-range Brillouin optical time-domain analysis sensing. Experimental results are reported on sensing capabilities along 120-km distance with 1-m spatial resolution, and worst-case temperature and strain resolution values of 1.3 and 26 , respectively.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2012.2212183