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Proceedings Paper

Temperature sensitivity of Bragg gratings in PMMA and TOPAS microstructured polymer optical fibres
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Paper Abstract

We report on the temperature response of FBGs recorded in pure PMMA and TOPAS holey fibres. The gratings are fabricated for operational use at near IR wavelengths, using a phase mask and a CW He-Cd laser operating at 325nm. The room temperature grating response is non-linear and characterized by quadratic behaviour for temperatures from room temperature to the glass transition temperature, and this permanent change is affected by the thermal history of the gratings. We also report the first FBG inscription in microstructured polymer optical fibres fabricated from TOPAS. This material is fully polymerized and has very low moisture absorption, leading to very good fibre drawing properties. Furthermore, although TOPAS is chemically inert and bio-molecules do not readily bind to its surface, treatment with Antraquinon and subsequent UV activation allows sensing molecules to be deposited in well defined spatial locations. When combined with grating technology this provides considerable potential for label-free bio-sensing.

Paper Details

Date Published: 9 May 2008
PDF: 10 pages
Proc. SPIE 6990, Photonic Crystal Fibers II, 69900L (9 May 2008); doi: 10.1117/12.781019
Show Author Affiliations
David J. Webb, Aston Univ. (United Kingdom)
Kyriacos Kalli, Cyprus Univ. of Technology (Cyprus)
Chi Zhang, Aston Univ. (United Kingdom)
Michael Komodromos, Frederick Research Ctr. (Cyprus)
Alexander Argyros, The Univ. of Sydney (Australia)
Maryanne Large, The Univ. of Sydney (Australia)
Grigoriy Emiliyanov, Technical Univ. of Denmark (Denmark)
Ole Bang, Technical Univ. of Denmark (Denmark)
Erik Kjaer, Technical Univ. of Denmark (Denmark)

Published in SPIE Proceedings Vol. 6990:
Photonic Crystal Fibers II
Kyriacos Kalli; Waclaw Urbanczyk, Editor(s)

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