Acta Photonica Sinica, Volume. 52, Issue 7, 0706001(2023)
Magnetic Field Sensing of Conical Optical Fibers Based on PVA/Fe3O4 Hydrogel
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Fig. 1. Schematic diagram of the refractive index test device for a magnetic hydrogel
Fig. 2. Schematic diagram of the refractive index of magnetic hydrogels of different concentrations with magnetic field
Fig. 3. Diagram of optical fiber magnetic field sensing device based on magnetic hydrogel
Fig. 4. Experimental results of magnetic hydrogel-coated conical fiber at 1.2 g Fe3O4/9 g PVA concentration
Fig. 5. Experimental results of magnetic hydrogel-coated conical fiber at 1.6 g Fe3O4/9 g PVA concentration
Table 1. Linear response range and sensitivity comparison of magnetic field
View tableView in ArticleTable 1. Linear response range and sensitivity comparison of magnetic field
Magnetic particle diameter/concentration Linear response range Sensing structure Sensitivity within the linear response range Reference 10 nm/1.8% 11 mT A tapered fiber with a diameter of 7 um in the waist area 293 pm/Oe ［ 3 ］10 nm/1.18 g·cm-3 10~22.5 mT A tapered fiber with a diameter of 3.88 um in the waist area 191.8 pm/Oe ［ 22 ］10 nm/1.27 g·cm-3 3~9 mT A section of four-core fiber（FCF）sandwiched between two no-core fibers（NCFs）forms an NCF-FCF-NCF structure 264.29 pm/mT ［ 23 ］10 nm/3.6% 0.6~21.4 mT A multimode-single mode-multimode（MM-SM-MM）fiber structure 123.06 pm/mT ［ 24 ］20 nm/2.1% 6.4~22.6 mT A tapered fiber with a diameter of 11.8 um in the waist area 86.42 pm/mT This study
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Cairong GUO, Ruicheng JIANG, Dawei ZHANG, Shijie LIU, Chunxian TAO. Magnetic Field Sensing of Conical Optical Fibers Based on PVA/Fe3O4 Hydrogel[J]. Acta Photonica Sinica, 2023, 52(7): 0706001
Paper Information
Category: Fiber Optics and Optical Communications
Received: Feb. 17, 2023
Accepted: Mar. 22, 2023
Published Online: Sep. 26, 2023
The Author Email: TAO Chunxian (tao@usst.com)
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