Pressure and Temperature Sensor Based on Graphene Diaphragm and Fiber Bragg Gratings

Nannan Dong, Sumei Wang*, Lan Jiang, Yi Jiang, Peng Wang, Liuchao Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)

Abstract

A compact optical fiber sensor based on a Fabry-Perot interferometer (FPI) with an integrated fiber Bragg grating is proposed to measure pressure and temperature simultaneously. The light reflectors of the proposed FPI comprise a graphene film and a fiber end face. The sensitivities of the FPI sensor for measuring pressure and temperature are 501.4 nm/kPa and 306.2 nm/°C, respectively. Conflicting signals of pressure and temperature can cause cross-impact errors at 610 Pa/°C. The introduction of a fiber Bragg grating can effectively prevent the cross-impact of the FPI sensor. The pressure sensitivity obtained is 7.96 to 12 times higher than the previous study. The proposed fiber sensor can simultaneously measure pressure and temperature using a sensitivity matrix.

Original languageEnglish
Pages (from-to)431-434
Number of pages4
JournalIEEE Photonics Technology Letters
Volume30
Issue number5
DOIs
Publication statusPublished - 1 Mar 2018

Keywords

  • Fabry-Perot interferometers
  • fiber Bragg gratings
  • pressure measurement
  • temperature measurement

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