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Journal of Russian Laser Research

, Volume 40, Issue 3, pp 243–248 | Cite as

Ultrasensitive Temperature Sensor Based on Fiber-Optic Fabry–Pérot Interferometer with Vernier Effect

  • Yuqiang Yang
  • Yongguang Wang
  • Yuxin Zhao
  • Jiuxing JiangEmail author
Article
  • 13 Downloads

Abstract

We propose and demonstrate an ultrasensitive temperature sensor based on a fiber-optic Fabry–Pérot interferometer (FPI) with the Vernier effect. The sensor is prepared by splicing a section of silica tube and single-mode fiber (SMF) to a section of SMF in sequence, which formed two-cascaded FPIs. Their superimposed spectrum can produce the Vernier effect and form the interference spectrum envelope due to a similar free spectrum range (FSR). The shift of the interference spectrum envelope is much larger than that of a single FPI, when the temperature changes. Experimental results show that the designed sensor can provide a high temperature sensitivity of 183.99 pm/°C, which is almost 220 times higher than that of a single air cavity (0.86 pm/°C) and about 20 times higher than that of a single silica cavity (9.14 pm/°C). The sensor designed has compact structure (< 1 mm) and high sensitivity, providing a prospect for successful applications.

Keywords

fiber optic sensor Fabry–P´erot interferometer Vernier effect temperature sensor 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Yuqiang Yang
    • 1
    • 2
  • Yongguang Wang
    • 2
  • Yuxin Zhao
    • 2
  • Jiuxing Jiang
    • 2
    Email author
  1. 1.Higher Educational Key Laboratory for Measuring and Control Technology and Instrumentations of Heilongjiang ProvinceHarbin University of Science and TechnologyHarbinChina
  2. 2.Institute of Photonics and Optical Fiber TechnologyHarbin University of Science and TechnologyHarbinChina

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