Regularization for the inversion of Fibre Bragg Grating spectra
Abstract
Fibre Bragg Gratings have become widespread measurement devices in engineering and other fields of application. In all but a few cases, the relation between cause and effect is simplified to a proportional model. However, at its mathematical core lies a nonlinear inverse problem which appears not to have received much attention in the literature. In this paper, we present this core problem to the mathematical community and provide a first report on opportunities and limitations of a regularization approach. In particular, we show that difficulties arise from non-uniqueness and the absence of established parameter selection rules for nonlinear inverse problems with multiple regularization parameters. Nevertheless, the paper takes a first step toward extracting more information from a single FBG measurement.
Keywords
Cite
@article{arxiv.2009.06509,
title = {Regularization for the inversion of Fibre Bragg Grating spectra},
author = {Daniel Gerth and Susann Hannusch and Oliver Ernst and Jörn Ihlemann},
journal= {arXiv preprint arXiv:2009.06509},
year = {2020}
}