Infrared and Laser Engineering, Volume. 50, Issue 5, 20200453(2021)

Three-dimensional shape multi-core fiber reconstruction method of flexible mechanism by introducing curvature and angle correction

Jiahao Lv1,2, Mingli Dong1,2, Yanlin He1,2, Guangkai Sun1,2, and Kangpeng Zhou1,3
Author Affiliations
  • 1Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science & Technology University, Beijing 100192, China
  • 2Beijing Laboratory of Optical Fiber Sensing and System, Beijing Information Science and Technology University, Beijing 100016, China
  • 3School of Precision Instrument & Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China
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    Figures & Tables(12)
    Schematic diagram of seven-core FBG
    Cross section of three-core FBG configuration
    Schematic diagram of spatial curve reconstruction
    Photo and schematic diagram of the experimental system. (a) Photo of the assembled entire experiment setup; (b) System principle diagram
    Curvature and angle obtained by strain interpolation
    Angle correction
    Relationship between curvature scale factor and reconstruction error
    Curvature correction
    Corrected reconstruction shape measurement results
    Helix shape reconstruction result
    • Table 1. Central wavelength of sensors

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      Table 1. Central wavelength of sensors

      Sensor numberCentral wavelength/nm
      11543.30
      21546.99
      31551.07
      41555.18
      51559.26
    • Table 2. Reconstruction errors of different shapes after and before correction

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      Table 2. Reconstruction errors of different shapes after and before correction

      Error
      With correctionsWithout corrections
      ${e_{avg}}$${e_{\max }}$${e_{avg}}$${e_{\max }}$
      k=5.00 0.230.381.223.06
      k=5.60 0.200.471.313.24
      k=6.25 0.451.361.984.70
      k=7.14 0.591.522.195.92
      k=8.33 0.812.002.7411.69
      k=10.00 2.173.943.4817.21
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    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

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    Paper Information

    Category: Optical devices

    Received: Nov. 2, 2020

    Accepted: --

    Published Online: Aug. 13, 2021

    The Author Email:

    DOI:10.3788/IRLA20200453

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