Open AccessNumerical analysis of single pulse and differential pulse-width pair BOTDA systems in the high spatial resolution regime
Author(s) -
Aldo Minardo,
Romeo Bernini,
Luigi Zeni
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.019233
Subject(s) - optics , image resolution , pulse (music) , brillouin zone , brillouin scattering , time domain , pulse width modulation , physics , optical fiber , computer science , detector , computer vision , quantum mechanics , voltage
A numerical analysis of conventional and differential pulse-width pair Brillouin optical time domain analysis systems is reported. The tests are focused on determining the performance of these systems especially in terms of spatial resolution, as a function of the pulse characteristics. A new definition of spatial resolution is given, based on analysis of the shape of the Brillouin gain spectrum. The influence of the rise/fall time of the pulse light to the spatial resolution is also studied.