Title :
Simplex-Coded BOTDA Sensor Over 120-km SMF With 1-m Spatial Resolution Assisted by Optimized Bidirectional Raman Amplification
Author :
Soto, Marcelo A. ; Taki, Mohammad ; Bolognini, Gabriele ; Pasquale, Fabrizio Di
Author_Institution :
Scuola Superiore Sant´´Anna, TeCIP Inst., Pisa, Italy
Abstract :
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.
Keywords :
Brillouin spectra; fibre optic sensors; strain measurement; temperature measurement; time resolved spectra; SMF; bidirectional low noise Raman amplification; long-range Brillouin optical time-domain analysis sensing; return-to-zero modulation format; simplex-coded BOTDA sensor; single modfe fiber; size 120 km; strain resolution; temperature resolution; Optical fiber amplifiers; Optical fiber sensors; Probes; Scattering; Spatial resolution; Stimulated emission; Temperature measurement; Brillouin scattering; Raman amplification; fiber optics sensors; strain and temperature measurements;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2212183
