Liquid hydrostatic pressure optical sensor based on micro-cavity produced by the catastrophic fuse effect

Maria De Fátima F.domingues, Tiago De Brito Paixão, Esequiel Fernandes Teixeira Mesquita, Nélia Alberto, Ana Rita Frias, Rute A.S. Ferreira, Humberto Varum, Paulo Fernando Da Costa Antunes, Paulo Sérgio De Brito André

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

We propose an optical fiber hydrostatic pressure sensor based on micro-cavities generated by the fiber fuse effect. The presented sensor is manufactured through the recycling of optical fiber destroyed by the fiber fuse effect, being, therefore, a cost-effective solution, when compared with other similar micro-cavity-based solutions. The developed sensor was characterized for pressures up to 20 kPa, showing a linear sensitivity coefficient of 0.47 ± 0.03nm·kPa-1, for pressure values below 8 kPa. Furthermore, we propose a new theoretical model to describe the behavior of the microcavities embedded in optical fibers. This allows us to solve the discrepancies, already identified by other authors, between the experimental results and the ones attained with the flat mirrors Fabry-Perot model. By this way, we were able to describe the sensor response, within the full dynamic range.

Original languageBritish English
Article number7126927
Pages (from-to)5654-5658
Number of pages5
JournalIEEE Sensors Journal
Volume15
Issue number10
DOIs
StatePublished - 1 Oct 2015

Keywords

  • FPI microcavity
  • fuse effect
  • Pressure sensor

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