Demonstration of distributed shape sensing based on Brillouin scattering in multi-core fibers

In this paper we demonstrate distributed shape sensing based on stimulated Brillouin scattering in a multi-core fiber (MCF). Brillouin optical time-domain analysis with differential pulse-width pairs is implemented to measure the local tangential strain-induced variation of the Brillouin frequency shift along different cores of the fiber. Employing the differential strain measured in multiple off-center cores in the MCF, distributed profiles of both bending angle and fiber curvature are parametrically retrieved. The paper presents the first demonstration of distributed bending sensing, providing the cornerstone to further develop the system into a fully distributed 3D shape sensor.


Published in:
Proc. SPIE, 10323, 1032393
Presented at:
25th International Conference on Optical Fiber Sensors, Jeju, South Korea, April 24-28, 2017
Year:
2017
Publisher:
New York, Ieee
ISBN:
978-1-5090-4850-2
Keywords:
Laboratories:




 Record created 2017-05-12, last modified 2018-09-13

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