A cost-effective edge-filter-based FBG strain interrogator using catastrophic fuse effect microcavity interferometers

Camilo A.R. Díaz, Carlos A.F. Marques, M. Fátima F. Domingues, Moisés R.N. Ribeiro, Anselmo F. Neto, Maria J. Pontes, Paulo S. André, Paulo F.C. Antunes

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

Abstract

This paper presents a simple, compact, stable and inexpensive in-line solution based on catastrophic fuse effect micro-cavity interferometers for edge-filter strain interrogation of a fiber Bragg grating sensor. By using a commercial spliced machine and recycling damage fiber for the catastrophic fuse effect it is possible to construct a micro-cavity with high contrast of more than 20dB, and acceptable half free spectra range (FSR) around 13nm of interrogation range. The strain from 0 to 1440μStrain of the FBG sensor is measured with evidences of high repeatability and stability. Future work will investigate the use of the proposed method for applications requiring higher interrogation rates.

Original languageBritish English
Title of host publicationOptical Components and Materials XV
EditorsMichel J. F. Digonnet, Shibin Jiang
PublisherSPIE
ISBN (Electronic)9781510615410
DOIs
StatePublished - 2018
EventOptical Components and Materials XV 2018 - San Francisco, United States
Duration: 29 Jan 201831 Jan 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10528
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptical Components and Materials XV 2018
Country/TerritoryUnited States
CitySan Francisco
Period29/01/1831/01/18

Keywords

  • Fiber Bragg grating
  • Interrogation technique
  • Optical fiber sensors
  • Strain

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