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

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.

Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
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
ISBN: 9780819482464
Last Modified: 29 Nov 2023 13:45
Date Deposited: 14 Jun 2011 11:42
Full Text Link: http://spie.org ... oduct_id=885926
10.1117/12.885926
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Conference contribution
Published Date: 2011
Authors: Johnson, Ian P.
Webb, David J.
Kalli, Kyriacos

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