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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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