Performance of double sideband modulated probe wave in BOTDA distributed fiber sensor.

Authors :: Cui, Qingsong
Pamukcu, Sibel
Lin, Aoxiang
Xiao, Wen
Toulouse, Jean
Source :: Microwave & Optical Technology Letters; Dec2010, Vol. 52 Issue 12, p2713-2717, 5p, 2 Diagrams, 4 Graphs
Publication Year :: 2010
Abstract: We report on the performance of double sideband (DSB) modulated probe wave in Brillouin optical time domain analysis (BOTDA) distributed fiber sensor. Compared to single sideband (SSB) modulation, along the sensing fiber the pump depletion of DSB modulation is remarkably suppressed in time domain and also has a relatively narrower Brillouin gain spectrum in frequency domain. Both the theoretical simulation and the experimental results demonstrate that the DSB modulation provides potentially longer sensing distance and higher accuracy in measurement than the SSB modulation in the BOTDA distributed fiber sensor system. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2713-2717, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25566 [ABSTRACT FROM AUTHOR]

Subjects :: BRILLOUIN scattering
OPTICAL fiber detectors
ELECTRONIC modulation
TIME-domain analysis
COMPUTER simulation
ENERGY transfer

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