Affiliation:
1. Yangtze Optical Fiber and Cable Joint Stock Limited Company
2. Harbin Institute of Technology
Abstract
This study proposes a distributed large-curvature sensor based on ring-core few-mode fiber (RC-FMF) and differential pulse-pair Brillouin optical time-domain analysis (DPP-BOTDA). The RC-FMF is adhered to a thin steel substrate and an asymmetric hump shape is reconstructed using the Frenet-Serret algorithm. The proposed curvature sensor demonstrates a larger curvature-sensing range, excellent tolerance to bending-induced optical loss, and increased Brillouin gain coefficient. The proposed sensor also demonstrates longer sensing distance and continuous absolute measurement compared to other sensors. The proposed model can be applied to the end tracking of soft robotics and structural health monitoring of civil infrastructures.
Funder
Basic and Applied Basic Research Foundation of Guangdong Province
Program of Marine Economy Development Special Fund (Six Marine Industries) under Department of Natural Resources of Guangdong Province
Guangdong Provincial Key Laboratory of Photonics Information Technology
National Natural Science Foundation of China
Program for Guangdong Introducing Innovative and Enterpreneurial Teams
Subject
Atomic and Molecular Physics, and Optics
Cited by
5 articles.
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