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Proceedings Article

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

[+] Author Affiliations
David J. Webb, Chi Zhang

Aston Univ. (United Kingdom)

Kyriacos Kalli

Cyprus Univ. of Technology (Cyprus)

Michael Komodromos

Frederick Research Ctr. (Cyprus)

Alexander Argyros, Maryanne Large

The Univ. of Sydney (Australia)

Grigoriy Emiliyanov, Ole Bang, Erik Kjaer

Technical Univ. of Denmark (Denmark)

Proc. SPIE 6990, Photonic Crystal Fibers II, 69900L (April 21, 2008); doi:10.1117/12.781019
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From Conference Volume 6990

  • Photonic Crystal Fibers II
  • Kyriacos Kalli; Waclaw Urbanczyk
  • Strasbourg, France | April 07, 2008

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.

© (2008) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

David J. Webb ; Kyriacos Kalli ; Chi Zhang ; Michael Komodromos ; Alexander Argyros, et al.
"Temperature sensitivity of Bragg gratings in PMMA and TOPAS microstructured polymer optical fibres", Proc. SPIE 6990, Photonic Crystal Fibers II, 69900L (April 21, 2008); doi:10.1117/12.781019; http://dx.doi.org/10.1117/12.781019


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