23 May 2005 Impact of hydrogenation conditions on the temperature and strain coefficients of type 1 and type 1a dual grating sensors
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Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.624287
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium
Abstract
We report experimental findings for tailoring the temperature and strain coefficients of Type 1 and Type 1A fibre Bragg gratings by influencing the photosensitivity presensitisation of the host optical fibre. It is shown that by controlling the level of hydrogen saturation, via hot and cold hydrogenation, it is possible to produce gratings with lower thermal coefficients. Furthermore, there is a larger difference between the Type 1 and Type 1A thermal coefficients and a significant improvement in the matrix condition number, which impacts the ability to recover accurate temperature and strain invariant data using the Type1-1A dual grating sensor.
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K. Kalli, K. Kalli, George Simpson, George Simpson, Kaiming Zhou, Kaiming Zhou, Lin Zhang, Lin Zhang, Ian Bennion, Ian Bennion, } "Impact of hydrogenation conditions on the temperature and strain coefficients of type 1 and type 1a dual grating sensors", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.624287; https://doi.org/10.1117/12.624287
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