Utilisation of thermal annealing to record multiplexed FBG sensors in multimode microstructured polymer optical fibre

Johnson, Ian P., Webb, David J. and Kalli, Kyriacos (2011). Utilisation of thermal annealing to record multiplexed FBG sensors in multimode microstructured polymer optical fibre. IN: SPIE proceedings. SPIE.

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.

Publication DOI: https://doi.org/10.1117/12.885926
Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
Engineering & Applied Sciences > Institute of Photonics
Additional Information: Johnson, I.P.; Webb, David J. and Kalli, Kyriacos, Utilisation of thermal annealing to record multiplexed FBG sensors in multimode microstructured polymer optical fibre. IN: 21st International Conference on Optical Fiber Sensors (OFS21). Ottawa (CA), 15-19 May 2011. Wojtek J. Bock; Jacques Albert; Xiaoyi Bao (eds.), 327, (2011). Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Event Title: 21st International Conference on Optical Fiber Sensors
Event Type: Other
Event Dates: 2011-05-15 - 2011-05-19
Uncontrolled Keywords: Fibre Bragg gratings,UV inscribed,multimode microstructured polymer optical fibre,thermally annealing,fibre length,permanent negative Bragg wavelength shift,wavelength division multiplexed sensors,single phase mask,wavelength region,lower attenuation,poly (methyl methacrylate),Applied Mathematics,Computer Science Applications,Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials,Condensed Matter Physics
Full Text Link: http://spie.org ... oduct_id=885926
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
Published Date: 2011
Authors: Johnson, Ian P.
Webb, David J. ( 0000-0002-5495-1296)
Kalli, Kyriacos

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