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 Sept 201524 Sept 2015

    Conference

    ConferenceThe 24th International Conference on Plastic Optical Fibers
    LocationNuremberg/Franconia
    Country/TerritoryGermany
    CityPOF 2015
    Period22/09/201524/09/2015

    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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