Open AccessStimulated Brillouin scattering modeling for high-resolution, time-domain distributed sensing
Author(s) -
Aldo Minardo,
Romeo Bernini,
Luigi Zeni
Publication year - 2007
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.15.010397
Subject(s) - brillouin scattering , optics , brillouin zone , physics , time domain , single mode optical fiber , stokes wave , optical fiber , continuous wave , scattering , wave propagation , computer science , laser , breaking wave , computer vision
Starting from the standard three-wave SBS coupled equations, we derive a novel expression describing Brillouin interaction between a pulsed pump wave with a finite cw component, and a Stokes continuous wave counter-propagating along a single-mode optical fiber. The derived integral equation relates the time-domain Stokes beam amplification to the Brillouin frequency distribution. The proposed model permits an accurate description of the Brillouin interaction even for arbitrarily-shaped pump pulses, and can be efficiently employed for improving the accuracy and the resolution of SBS-based distributed sensors. The validity and the limits of the proposed model are numerically analyzed and discussed.