Cost-effective high rate interrogation architecture for Fabry-Perot interferometric sensors

M. Fátima Domingues, Tiago Paixão, Nélia Alberto, Paulo André, Paulo Antunes

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


In this paper, the design and implementation of a cost-effective interrogation architecture, for dynamic strain monitoring of in-line Fabry-Perot interferometric (FPI) optical fiber sensors is presented. The common interrogation techniques for this type of sensors are based in the full spectrum analysis, which render them not adequate for dynamic/high frequency monitoring applications. In this work, we propose an alternative cost-effective solution, based on a simplified edge-filter technique, for the dynamic monitoring of FPI sensing devices. The FPI based sensor was produced from the recycling of optical fiber previously damaged by the catastrophic fuse effect using precise splicing techniques. A characterization was performed with two different devices, an optical spectrum analyzer (OSA) and the proposed device leading to similar behavior and sensitivity values.

Original languageBritish English
Title of host publicationSeventh European Workshop on Optical Fibre Sensors
EditorsKyriacos Kalli, Gilberto Brambilla, Sinead O'Keeffe
ISBN (Electronic)9781510631236
StatePublished - 2019
Event7th European Workshop on Optical Fibre Sensors, EWOFS 2019 - Limassol, Cyprus
Duration: 1 Oct 20194 Oct 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


Conference7th European Workshop on Optical Fibre Sensors, EWOFS 2019


  • Catastrophic fuse effect
  • Cost-effective FPI interrogation
  • Dynamic monitoring.
  • Fabry-Perot sensors
  • Strain analysis


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