23 April 2017 Demonstration of distributed shape sensing based on Brillouin scattering in multi-core fibers
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 1032393 (2017) https://doi.org/10.1117/12.2267486
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
Abstract
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.
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Zhiyong Zhao, Marcelo A. Soto, Ming Tang, Luc Thévenaz, "Demonstration of distributed shape sensing based on Brillouin scattering in multi-core fibers", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032393 (23 April 2017); doi: 10.1117/12.2267486; https://doi.org/10.1117/12.2267486
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