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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.
Wavelength division multiplexing
|Issue Date:||2011||Publisher:||Spie Digital Library||Source:||21st International Conference on Optical Fiber Sensors;ON;15 -19 May 2011,Ottawa||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.||URI:||http://ktisis.cut.ac.cy/handle/10488/7058||DOI:||10.1117/12.885926||Rights:||© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).|
|Appears in Collections:||Δημοσιεύσεις σε συνέδρια/Conference papers|
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