A Method for Determining the Length of FBG Sensors Accurately

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

In this letter, we propose a method for estimating the length of single-mode fiber Bragg grating type sensors with high accuracy. Our method is based on calculating the maximum oscillation frequency of the side-lobes of the FBG reflection spectrum. We show that this frequency is independent of the stress field to which the sensor is subjected, and is dependent on the length of the sensor. This method can be used to characterize the gauge length of already installed FBG sensors so that they can provide useful data for engineering models of structural integrity. All the analyses are based on the approximated transfer matrix model, which is a newly developed numerical method for the analysis of the FBG reflection spectrum under various stress fields.

Original languageEnglish
Pages (from-to)197-200
Number of pages4
JournalIEEE Photonics Technology Letters
Volume31
Issue number2
DOIs
Publication statusPublished - Jan 2019

Keywords

  • FBG
  • Fiber Bragg grating
  • Length determination
  • Reflection spectrum
  • Structural integrity

Fingerprint Dive into the research topics of 'A Method for Determining the Length of FBG Sensors Accurately'. Together they form a unique fingerprint.

Cite this