Femtosecond laser induced refractive index structures in polymer optical fibre (POF) for sensing

S. J. Liang, P. J. Scully, J. Schille, J. Vaughan, W. Perrie

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

    Abstract

    Techniques to directly write localised refractive index structures in polymer optical fibres (POF) are presented, using UV (400nm) ultrafast laser with pulse lengths of 100 fs to create in-fibre gratings for sensing. No doping is necessary for photosensitisation so commercially available POF is used. An in-fibre grating consisting of a 1.8 μm wide refractive index structure with a periodicity of 189 nm was demonstrated in single mode polymer fibre with optimised laser processing parameters. © 2009 SPIE.
    Original languageEnglish
    Title of host publicationProceedings of SPIE - The International Society for Optical Engineering|Proc SPIE Int Soc Opt Eng
    Place of PublicationUSA
    PublisherSPIE
    Volume7503
    ISBN (Print)9780819478146
    DOIs
    Publication statusPublished - 2009
    Event20th International Conference on Optical Fibre Sensors - Edinburgh
    Duration: 1 Jul 2009 → …

    Conference

    Conference20th International Conference on Optical Fibre Sensors
    CityEdinburgh
    Period1/07/09 → …

    Keywords

    • Femtosecond laser
    • PMMA
    • Poly(methyl methacrylate)
    • Polymer optical fibre
    • Refractive index modification

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