Reliability of stable fiber Bragg grating sensor system for monitoring temperature and strain individually

Yao Jen Chang, Chien Hung Yeh, Chi Wai Chow

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In the investigation, the fiber Bragg grating-based sensor system is proposed and demonstrated to monitor temperature and strain individually. In order to obtain a stable and accurate sensing signal, an erbium-doped fiber (EDF) ring laser scheme with a 2 m long unpumped EDF as the saturable absorber is also proposed. Hence, the observed stabilization of output power and sensing wavelength can be less than 0.1 dB and 0.02 nm, and 0.3 dB and 0.02 nm in the sensor system, respectively, in the back-to-back state and 25 km fiber link. Hence, this sensor system can improve the output stability of the sensing signal. In addition, the temperature- and strain-induced wavelength shifts can be operated in the range of 20 °C-70 °C and 0-37 500 µϵ, respectively.

Original languageEnglish
Article number105108
JournalMeasurement Science and Technology
Volume30
Issue number10
DOIs
StatePublished - Oct 2019

Keywords

  • fiber Bragg grating (FBG)
  • fiber laser
  • optical sensor

Fingerprint Dive into the research topics of 'Reliability of stable fiber Bragg grating sensor system for monitoring temperature and strain individually'. Together they form a unique fingerprint.

Cite this