Embedding silica and polymer fibre Bragg gratings (FBG) in plastic 3D-printed sensing patches

Michal G. Zubel, Kate Sugden, David J. Webb, David Sáez-Rodríguez, Kristian Nielsen, Ole Bang

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


This paper reports the first demonstration of a silica fibre Bragg grating (SOFBG) embedded in an FDM 3-D printed housing to yield a dual grating temperature-compensated strain sensor. We also report the first ever integration of polymer fibre Bragg grating (POFBG) within a 3-D printed sensing patch for strain or temperature sensing. The cyclic strain performance and temperature characteristics of both devices are examined and discussed. The strain sensitivities of the sensing patches were 0.40 and 0.95 pm/με for SOFBG embedded in ABS, 0.38 pm/με for POFBG in PLA, and 0.15 pm/με for POFBG in ABS. The strain response was linear above a threshold and repeatable. The temperature sensitivity of the SOFBG sensing patch was found to be up to 169 pm/°C, which was up to 17 times higher than for an unembedded silica grating. Unstable temperature response POFBG embedded in PLA was reported, with temperature sensitivity values varying between 30 and 40 pm/°C.
Original languageEnglish
Title of host publicationProceedings of the Spie
Number of pages12
PublisherSPIE - International Society for Optical Engineering
Publication date2016
Article number98860N
ISBN (Print)9781510601314
Publication statusPublished - 2016
EventMicro-Structured and Specialty Optical Fibres IV - Brussels, Belgium
Duration: 3 Apr 20163 Apr 2016


ConferenceMicro-Structured and Specialty Optical Fibres IV
SeriesProceedings of S P I E - International Society for Optical Engineering


  • Fibre optic sensors; fibre gyros
  • Integrated optics
  • Gratings, echelles
  • Fibre optics
  • Other optical system components
  • Fibre optic sensors
  • Thermal variables measurement
  • Bragg gratings
  • fibre optic sensors
  • integrated optics
  • polymer fibres
  • silicon compounds
  • strain sensors
  • temperature sensors
  • silica fibre Bragg grating
  • polymer fibre Bragg gratings
  • plastic 3D-printed sensing patches
  • FDM 3-D printed housing
  • dual grating temperature-compensated strain sensor
  • 3D printed sensing patch
  • strain sensing
  • temperature sensing
  • cyclic strain performance
  • strain sensitivities
  • temperature sensitivity
  • SiO2

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