Simplified fiber Bragg grating-based temperature measurement system design with enhanced high signal-to-noise ratio

YÜCEL M., Torun M.

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, vol.60, no.4, pp.965-969, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 60 Issue: 4
  • Publication Date: 2018
  • Doi Number: 10.1002/mop.31080
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.965-969
  • Gazi University Affiliated: Yes


In this study, a temperature measurement was performed by determining the linear slope in the transmission spectrum of fiber Bragg grating (FBG) and by designing a temperature measurement system with the density fluctuation of a stationary continuous wave (CW) laser light on this line. The measuring range, which may change depending on the transmission spectrum of the FBG, was determined to be 12 degrees C for this study and measurements were performed with 0.06 degrees C accuracy. Gaussian fitting with negligible time loss and high noise immunity increased the signal-to-noise ratio (SNR) ratio to 37.5 dB. A simple, cost- efficient, high-speed, and high SNR, ergonomic, compact temperature measurement system was created with the suggested slope technique and by using a very limited number of fiber optic components.