DocumentCode
1763922
Title
High-Spatial Resolution DPP-BOTDA by Real-Time Balanced Detection
Author
Minardo, Aldo ; Coscetta, Agnese ; Zeni, Luigi ; Bernini, Romeo
Author_Institution
Dipt. di Ing. Ind. e dell´Inf., Seconda Univ. di Napoli, Aversa, Italy
Volume
26
Issue
12
fYear
2014
fDate
41805
Firstpage
1251
Lastpage
1254
Abstract
A novel scheme for distributed Brillouin sensing based on differential pump-width pair Brillouin optical time-domain analysis (DPP-BOTDA) with balanced detection of Brillouin gain is proposed and demonstrated. Compared with standard DPP-BOTDA, the proposed method allows us to reduce the measurement time and simultaneously improve the accuracy in Brillouin frequency shift estimation. Experimental results, carried out at 10-cm spatial resolution, demonstrate the effectiveness of the proposed method.
Keywords
Brillouin spectra; distributed sensors; fibre optic sensors; frequency estimation; time-domain analysis; Brillouin frequency shift estimation; differential pump-width pair Brillouin optical time-domain analysis; distributed Brillouin sensing; high-spatial resolution; real-time balanced detection; Optical fiber sensors; Optical fibers; Photodetectors; Probes; Scattering; Spatial resolution; Brillouin scattering; distributed sensor; fiber sensor;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/LPT.2014.2320594
Filename
6808532
Link To Document