PCF-Cavity FBG Fabry-Perot Resonator for Simultaneous Measurement of Pressure and Temperature

Muhammad Mahmood Ali, Md Rajibul Islam, Kok Sing Lim, Dinusha Serandi Gunawardena, Hang Zhou Yang, Harith Ahmad

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

In this paper, we propose a Photonic Crystal Fiber (PCF)-cavity fiber Bragg grating (FBG) Fabry-Perot resonator for simultaneous sensing of temperature and pressure. The proposed device is constructed by splicing a 1.5-mm long PCF segment between two identical saturated FBGs written in SMF-28 forming an FBG-PCF-FBG configuration. As a result, a resonance dip is created within the Bragg reflection curve. Taking advantage of the difference in pressure sensitivities between the two types of fiber, the discriminative measurement of pressure and temperature can be achieved from the shifts of the resonance wavelength and band-edge wavelength. In addition, the same temperature sensitivity of PCF and SMF-28 provides the convenience of eliminating the temperature variable and achieving temperature insensitive pressure measurement.

Original languageEnglish
Article number7194738
Pages (from-to)6921-6925
Number of pages5
JournalIEEE Sensors Journal
Volume15
Issue number12
DOIs
Publication statusPublished - 1 Dec 2015
Externally publishedYes

Keywords

  • Fabry-Perot resonator
  • Optical fiber sensors
  • photonic crystal fiber cavity
  • pressure sensor
  • temperature sensor

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