23 May 2005 Tunnel monitoring using multicore fiber displacement sensor
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Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.623992
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium
Abstract
We describe the first application of multiplexed fibre Bragg grating strain sensors in a multicore fibre. Sets of gratings, acting as strain gauges, are co-located in the multicore fibre such that they enable the curvature to be measured. Multiple sets of these gratings allow the curvature to be measured at several points along the fibre. This sensor is configured to monitor displacement of concrete tunnel sections, and was demonstrated capable of displacement measurement with a resolution of ±0.1 mm over a range of several millimeters.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
William N. MacPherson, William N. MacPherson, M. Silva-Lopez, M. Silva-Lopez, James S. Barton, James S. Barton, A. J. Moore, A. J. Moore, J. D. C. Jones, J. D. C. Jones, D. Zhao, D. Zhao, Lin Zhang, Lin Zhang, Ian Bennion, Ian Bennion, Nicole Metje, Nicole Metje, C. D. F. Rogers, C. D. F. Rogers, David N. Chapman, David N. Chapman, } "Tunnel monitoring using multicore fiber displacement sensor", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.623992; https://doi.org/10.1117/12.623992
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