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Title: Utilisation of thermal annealing to record multiplexed fbg sensors in multimode microstructured polymer optical fibre
Authors: Kalli, Kyriacos 
Johnson, Ian P. 
Webb, David J. 
Keywords: Photonic crystals;Wavelength division multiplexing;Esters;Fibers
Category: Electrical Engineering - Electronic Engineering - Information Engineering
Field: Engineering and Technology
Issue Date: May-2011
Publisher: Spie Digital Library
Source: (2011) Proceedings of SPIE - The International Society for Optical Engineering, 7753, art. no. 77536T; 21st International Conference on Optical Fiber Sensors,ON,15 -19 May 2011,Ottawa
Journal: Proceedings of SPIE - The International Society for Optical Engineering 
Conference: International Conference on Optical Fiber Sensors 
Abstract: Fibre Bragg gratings have been UV inscribed in multimode microstructured polymer optical fibre in both the 1550nm and 800nm spectral regions. Thermally annealing the fibre at 80°C has been shown to shrink the fibre length and as a result a permanent negative Bragg wavelength shift is observed. The blue shift can be tuned between 0-16nm in the 1550nm spectral region and 0-6nm in the 800nm spectral region, depending on the duration the heat is applied before a saturation level is reached and the fibre stops shrinking in the region of 2 hours. Exploiting this, wavelength division multiplexed sensors have been UV inscribed in both the 1550nm and 800nm regions using a single phase mask for each wavelength region. The 800nm sensor takes advantage of the lower attenuation of poly (methyl methacrylate) of 2dB/m compared to 100dB/m at 1550nm.
ISBN: 978-081948246-4
ISSN: 0277-786X
DOI: 10.1117/12.885926
Rights: © 2011 SPIE.
Type: Conference Papers
Appears in Collections:Δημοσιεύσεις σε συνέδρια/Conference papers

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