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14 February 2019 Investigation on fiber optic curvature sensor based on SMF-FMF-SMF structure with up-taper fusion
Qihang Zeng, Wei Xu, Ying Shen, Changyuan Yu, Fengze Tan
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Proceedings Volume 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018); 110484A (2019) https://doi.org/10.1117/12.2522300
Event: 17th International Conference on Optical Communications and Networks (ICOCN2018), 2018, Zhuhai, China
Abstract
A compact fiber-optic curvature sensor based on modal interferometer (MI) in few mode fiber (FMF) is presented and investigated both in theory and experiment. The proposed MI is simply constructed by splicing a 2-centimeter-long FMF between single mode fibers (SMFs) with built-in up-taper fusion mode, i.e., SMF-FMF-SMF structure is fabricated. Both the curvature sensing performance and temperature dependency are addressed, and the result shows that curvature within a range from 0 m-1 to 1.87 m-1 can be monitored without ambiguity and the temperature sensitivity can reach up to 111 pm/°C.
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Qihang Zeng, Wei Xu, Ying Shen, Changyuan Yu, and Fengze Tan "Investigation on fiber optic curvature sensor based on SMF-FMF-SMF structure with up-taper fusion", Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 110484A (14 February 2019); https://doi.org/10.1117/12.2522300
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KEYWORDS
Fiber optics sensors
Sensors
Fiber optics
Single mode fibers
Interferometers
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