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Title: Temperature sensitivity of Bragg gratings in PMMA and TOPAS microstructured polymer optical fibres
Authors: Webb, David J. 
Kalli, Kyriacos 
Zhang, Chi 
Komodromos, Michael
Argyros, Alexander 
Large, Maryanne C J 
Emiliyanov, Grigoriy
Bang, Ole 
Kjær, Erik Michael
Category: Electrical Engineering, Electronic Engineering, Information Engineering
Field: Engineering and Technology
Issue Date: 2008
Publisher: SPIE--The International Society for Optical Engineering
Source: Photonic Crystal Fibers II. Vol. 6990, 69900L (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.
DOI: 10.1117/12.781019
Rights: © 2008 SPIE--The International Society for Optical Engineering
Type: Conference Papers
Appears in Collections:Δημοσιεύσεις σε συνέδρια/Conference papers

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