Cristin-resultat-ID: 1792448
Sist endret: 18. februar 2021, 21:20
NVI-rapporteringsår: 2020
Resultat
Vitenskapelig artikkel
2020

Numerical Modeling of Fcy OTDR Sensing Using a Refractive Index Perturbation Approach

Bidragsytere:
  • Xin Lu og
  • Peter Thomas

Tidsskrift

Journal of Lightwave Technology
ISSN 0733-8724
e-ISSN 1558-2213
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2020
Publisert online: 2019
Volum: 38
Hefte: 4
Sider: 974 - 980

Importkilder

Scopus-ID: 2-s2.0-85079510229

Beskrivelse Beskrivelse

Tittel

Numerical Modeling of Fcy OTDR Sensing Using a Refractive Index Perturbation Approach

Sammendrag

Phase-sensitive optical time domain reflectometry (ΦOTDR) is an important tool for distributed fiber sensing. In order to optimize system performance, the influence on sensing performance of factors such as laser frequency drift and variations in ambient conditions need to be understood. While theoretical models can facilitate such understanding, to the best of our knowledge there is only one numerical model for ΦOTDR dynamic sensing, focusing on one particular detection scheme. In this article we propose a simple generic model for simulating the response characteristics of static and dynamic ΦOTDR systems. In the model, the sensing fiber is treated as a unidimensional waveguide, consisting of inhomogeneities with randomly generated refractive indices. Environmental perturbations are represented by modulations in the refractive index profile that produce equivalent phase shifts. The model is applied in the simulation of a ΦOTDR sensor for static measurements and the simulation of two different dynamic ΦOTDR sensor configurations. The model is used to analyze the experimentally observed phase drift in a ΦOTDR sensor, the model confirmed that observed drift was consistent with expected variations in the ambient temperature and laser frequency drift.

Bidragsytere

Xin Lu

  • Tilknyttet:
    Forfatter
    ved NORCE Energi og teknologi ved NORCE Norwegian Research Centre AS

Peter James Thomas

Bidragsyterens navn vises på dette resultatet som Peter Thomas
  • Tilknyttet:
    Forfatter
    ved NORCE Energi og teknologi ved NORCE Norwegian Research Centre AS
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