首页|One dimensional vector curvature sensor based on 2-core fiber offset structure
One dimensional vector curvature sensor based on 2-core fiber offset structure
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NSTL
Elsevier
? 2022 Elsevier LtdIn this paper, a curvature sensor based on 2-core fiber offset structure is proposed. Firstly, the curvature sensing principle of this sensor is qualitatively analyzed. It is concluded that this sensor has the ability to identify one-dimensional bending direction. This is proved by the following experiments. Considering that there can be two offset modes, experiments are carried out on sensors with different offset modes. Through experiments, it is concluded that the sensor in positive offset mode has better sensing performance. The sensors with different offset value are also tested. It is found that the sensor has better curvature sensing performance when its offset value is + 6 μm. The experiments show that the sensitivity of this sensor bending along different directions can reach ?14.19 nm/m?1 and + 16.58 nm/m?1. Meanwhile, it has a large measurement range and good linearity. The sensor is also insensitive to strain and twist. This sensor has a wide application prospect in the fields of industry, architecture and structural health monitoring.
NSTL
Elsevier
