Open AccessDetonation velocity measurements with uniform fibre Bragg gratings
Author(s) -
Josh Pooley,
Ed Price,
J. Ferguson,
M. Ibsen
Publication year - 2019
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.27.023464
Subject(s) - fiber bragg grating , optics , materials science , detonation , broadband , phosfos , optical fiber , grating , fiber optic sensor , physics , graded index fiber , explosive material , chemistry , organic chemistry
In this paper we demonstrate a simple and new fibre optic technique for measuring detonation velocities using uniform fibre Bragg gratings. We compare this new system with chirped fibre Bragg grating diagnostics and show how coherent source illumination can yield spatial uncertainties below ±10 μm - a percentage error that is an order of magnitude lower than the broadband ASE methods we have tested.