Single uniform FBG for simultaneous measurement of liquid level and temperature

Xuewen Shu, Kate Sugden, Ian Bennion

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, we propose and demonstrate a novel scheme for simultaneous measurement of liquid level and temperature based on a simple uniform fiber Bragg grating (FBG) by monitoring both the short-wavelength-loss peaks and its Bragg resonance. The liquid level can be measured from the amplitude changes of the short-wavelength-loss peaks, while temperature can be measured from the wavelength shift of the Bragg resonance. Both theoretical simulation results and experimental results are presented. Such a scheme has some advantages including robustness, simplicity, flexibility in choosing sensitivity and simultaneous temperature measurement capability.
Original languageEnglish
Article number094003
Pages (from-to)094003
Number of pages1
JournalMeasurement Science and Technology
Volume21
Issue number9
DOIs
Publication statusPublished - 28 Jul 2010

Keywords

  • fiber optics sensors
  • fiber Bragg gratings
  • liquid-level sensor

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