The effect of humidity on annealing of polymer optical fibre bragg gratings

Getinet Woyessa, Kristian Nielsen, Ole Bang

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

Abstract

The effect of humidity on annealing of PMMA based microstructured polymer optical fiber (mPOF) Bragg gratings is studied. Polymer optical fibers (POFs) are annealed in order to release stress formed during the fabrication process. Un-annealed fibers will have high hysteresis and low sensitivity to humidity, particularly when operated at high temperature. Typically annealing of PMMA POFs is done at 80oC in an oven with no humidity control and therefor at low humidity. The response to humidity of PMMA FBGs annealed at different levels of humidity at the same temperature has also been studied. PMMA FBGs annealed at high humidity have response with no hysteresis and an improved sensitivity which are independent of temperature compared to FBGs annealed at the same temperature but at lower humidity. In addition, PMMA FBG annealed at high humidity showed a permanent blue shift more than 200nm, which is a record of tuning POF FBGs.
Original languageEnglish
Title of host publicationProceedings of 24th International Conference on Plastic Optical Fibers
Publication date2015
Pages39-42
Publication statusPublished - 2015
EventThe 24th International Conference on Plastic Optical Fibers - Nuremberg/Franconia , POF 2015, Germany
Duration: 22 Sep 201524 Sep 2015

Conference

ConferenceThe 24th International Conference on Plastic Optical Fibers
LocationNuremberg/Franconia
CountryGermany
CityPOF 2015
Period22/09/201524/09/2015
Series24th International Conference on Plastic Optical Fibers, Pof 2015 - Conference Proceedings

Keywords

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics
  • Annealing
  • Fiber Bragg gratings
  • Humidity sensitivity
  • Hysteresis
  • Polymer optical fiber
  • Bragg gratings
  • Fiber optic sensors
  • Fibers
  • Humidity control
  • Optical fiber fabrication
  • Optical fibers
  • Plastic optical fibers
  • Polymers
  • Annealed fibers
  • Fabrication process
  • High humidity
  • High temperature
  • Low humidity
  • Low sensitivity
  • Microstructured polymer optical fibers (mPOF)

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