Investigation of the in-solution relaxation of polymer optical fibre Bragg gratings

Andrea Fasano, Getinet Woyessa, Jakob Janting, Henrik K. Rasmussen, Ole Bang

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    Abstract

    We investigate the response of PMMA microstructured polymer optical fibre Bragg gratings whenimmersed in methanol/water solutions. Overall we observe a permanent blue-shift in Bragg gratingwavelength after solvent evaporation. The main contribution in the resonance wavelength shift probably arisesfrom a permanent change in the size of the fibre, as already reported for high-temperature annealing ofpolymer optical fibres. As a consequence of the solution concentration dependence of the glass transitiontemperature of polymers, different methanol/water solutions lead to various degrees of frozen-in stressrelaxation with an overall blue-shift of the Bragg grating wavelength.
    Original languageEnglish
    Title of host publicationProceedings of the 25th International Conference on Plastic Optical Fibers 2016
    PublisherUniversity of Aston in Birmingham
    Publication date2016
    Pages4
    ISBN (Electronic)9781854494085
    Publication statusPublished - 2016
    Event25th International Conference on Plastic Optical Fibres - Aston University, Birmingham, United Kingdom
    Duration: 13 Sept 201615 Sept 2016
    Conference number: 25

    Conference

    Conference25th International Conference on Plastic Optical Fibres
    Number25
    Location Aston University
    Country/TerritoryUnited Kingdom
    CityBirmingham
    Period13/09/201615/09/2016
    SponsorAston University

    Keywords

    • Polymer
    • Microstructured polymer optical fibre
    • Fibre Bragg grating
    • Annealing
    • Solution

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