Lü Kangkang, Xing Liu, Chen Jiang, Hua Wang, Xin Sun, Lu Yi, Luming Li, Liang Peng, Chengbo Mou, Yunqi Liu. Magnetic Field Sensor Based on Long-Period Fiber Grating Packaged by Magnetic Fluid[J]. Laser & Optoelectronics Progress, 2022, 59(23): 2305001
- Laser & Optoelectronics Progress
- Vol. 59, Issue 23, 2305001 (2022)
Fig. 1. Transmission spectrum of LPFG. (a) SMF-LPFG; (b) DTP-LPFG
Fig. 2. Magnetic field sensor of LPFG coated with MF. (a) Schematic diagram; (b) physical picture
Fig. 3. Schematic diagram of experimental setup for magnetic field sensing
Fig. 4. Magnetic field characteristics of the magnetic field sensor based on SMF-LPFG. (a) Transmission spectra under different magnetic field strengths; (b) wavelength shift under different magnetic field strengths; (c) linear relationship between magnetic field strength and wavelength shift
Fig. 5. Magnetic field characteristics of the magnetic field sensor based on DTP-LPFG. (a) Transmission spectrum under different magnetic field strengths; (b) wavelength shift under different magnetic field strengths; (c) linear relationship between magnetic field strength and wavelength shift
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