M. Ding, M. Tang, Z. Hua, X. Wang, and Y. Zhao, “Magnetic Field Sensing by Magnetic-Fluid-Coated Capillary Long-Period Fiber Gratings”, JOPR, vol. 1, no. 3, pp. 124–130, Nov. 2023, doi: 10.47852/bonviewJOPR32021778.