Simultaneous Measurement of Strain and Temperature Using a Single Emission Line

Daniel Leandro, Martin Ams, Manuel López-Amo, Tong Sun, Kenneth T V Grattan

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In this study, we present and demonstrate a novel sensor system for simultaneous measurement of strain and temperature through a unique combination of a long period grating and a fiber laser based on a fiber Bragg grating. In order to achieve this, a new erbium-doped fiber laser structure is created, showing an optical signal-to-noise ratio of 55 dB and a peak power measured on the optical spectrum analyzer between -5 and 0 dBm. The strain and the temperature information can be obtained by using a unique emission line through monitoring both the fiber laser wavelength shift and the change of the power level, both of which showing a clear linear behavior.

Original languageEnglish
Article number6966733
Pages (from-to)2426-2431
Number of pages6
JournalJournal of Lightwave Technology
Volume33
Issue number12
DOIs
Publication statusPublished - 15 Jun 2015
Externally publishedYes

Keywords

  • Erbium lasers
  • fiber Bragg gratings
  • fiber lasers
  • long period gratings
  • LPG coupling

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