Journal
OPTICS EXPRESS
Volume 28, Issue 2, Pages 1291-1299Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.383096
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Funding
- H2020 Marie Sklodowska-Curie Actions [722509]
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A distributed curvature sensor based on Brillouin optical time-domain reflectometry interrogation technique in a D-shaped 7-core fibre is presented. By comparing the relative Brillouin frequency shift between the central core and three of the outer cores of the 7-core fibre, the curvature of various spools with different diameters is measured with a deviation from the actual value ranging between 9% and 15%. The analysis and results presented in this study show the first demonstration of distributed bend sensing using a specially designed multicore D-shaped fibre, paving the way for fully distributed 3D shape sensing. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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