Jiahao Lv, Mingli Dong, Yanlin He, Guangkai Sun, Kangpeng Zhou. Three-dimensional shape multi-core fiber reconstruction method of flexible mechanism by introducing curvature and angle correction[J]. Infrared and Laser Engineering, 2021, 50(5): 20200453
- Infrared and Laser Engineering
- Vol. 50, Issue 5, 20200453 (2021)
Fig. 1. Schematic diagram of seven-core FBG
Fig. 2. Cross section of three-core FBG configuration
Fig. 3. Schematic diagram of spatial curve reconstruction
Fig. 4. Photo and schematic diagram of the experimental system. (a) Photo of the assembled entire experiment setup; (b) System principle diagram
Fig. 5. Curvature and angle obtained by strain interpolation
Fig. 6. Angle correction
Fig. 7. Relationship between curvature scale factor and reconstruction error
Fig. 8. Curvature correction
Fig. 9. Corrected reconstruction shape measurement results
Fig. 10. Helix shape reconstruction result
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Table 1. Central wavelength of sensors
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Table 2. Reconstruction errors of different shapes after and before correction
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