FBG contact pressure sensitivity enhancement technology

Jichang Zhang, Serhiy Korposh, Ricardo Correia, Yaping Zhang

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

1 Citation (Scopus)


This paper presents the simulation investigations on the enhancement technology regarding the contact pressure sensitivity of the Fibre Bragg Grating (FBG) sensor. The FBG was embedded in a patch made of polymer material in order to increase its pressure sensitivity. The polymer coating converted the transverse pressure to longitudinal strain, which could further perturb the FBG. The strain distribution was not uniform in the FBG patched layer and therefore the Bragg wavelength deviated from the theoretical result. The difference caused by the non-uniform strain distribution was investigated. The effect of temperature was eliminated by the use of a grating multiplexing technique. FBG was composed of multiple sub-gratings with different strain distributions. A transfer matrix of sub-gratings was calculated and integrated to obtain the final reflected spectrum of the FBG. With the patch layer coating, pressure sensitivity of a silica FBG with λB = 1550 nm was increased to 5 nm/MPa, which was 1000 times higher than the original FBG without a patch.

Original languageEnglish
Title of host publicationICTON 2017 - 19th International Conference on Transparent Optical Networks
PublisherIEEE Computer Society
ISBN (Electronic)9781538608586
Publication statusPublished - 1 Sept 2017
Event19th International Conference on Transparent Optical Networks, ICTON 2017 - Girona, Catalonia, Spain
Duration: 2 Jul 20176 Jul 2017

Publication series

NameInternational Conference on Transparent Optical Networks
ISSN (Electronic)2162-7339


Conference19th International Conference on Transparent Optical Networks, ICTON 2017
CityGirona, Catalonia

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials


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