Open AccessTime-gated chaotic Brillouin optical correlation domain analysis
Author(s) -
Jianzhong Zhang,
Yahui Wang,
Mingjiang Zhang,
Bingqian Zhang,
Mengwen Li,
Chenyu Wu,
Lingling Qiao,
Yuncai Wang
Publication year - 2018
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.017597
Subject(s) - optics , autocorrelation , brillouin zone , brillouin scattering , chaotic , physics , time domain , image resolution , standard deviation , frequency domain , range (aeronautics) , optical fiber , materials science , computer science , mathematics , statistics , artificial intelligence , composite material , computer vision
A new technology for chaotic Brillouin optical correlation domain analysis (BOCDA) has been proposed and experimentally demonstrated with high spatial resolution. However, the off-peak amplification induced by the chaotic autocorrelation sidelobes limits the measurement range of chaotic BOCDA system. The time-gated scheme is introduced to suppress the off-peak amplification. With the pump pulse of 120 ns duration, the time-gated chaotic BOCDA has been experimentally achieved with a 9 cm spatial resolution over a 10.2 km measurement range. The standard deviation in the local Brillouin frequency shift is ± 1.8 MHz.