Research and simulation of fiber sensor for weak magnetic field detection

Xinyu ZHAO; Xingfang JIANG; Zhiqiang RUAN; Lei ZHANG

doi:10.5768/JAO202445.0408002

Journals >Journal of Applied Optics >Volume 45 >Issue 4 >Page 873 > Article

Journal of Applied Optics
Vol. 45, Issue 4, 873 (2024)

Research and simulation of fiber sensor for weak magnetic field detection

Xinyu ZHAO, Xingfang JIANG^*, Zhiqiang RUAN, and Lei ZHANG

Author Affiliations

School of Microelectronics and Control Engineering, Changzhou University, Changzhou, Jiangsu 213164, China

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DOI: 10.5768/JAO202445.0408002 Cite this Article

Xinyu ZHAO, Xingfang JIANG, Zhiqiang RUAN, Lei ZHANG. Research and simulation of fiber sensor for weak magnetic field detection[J]. Journal of Applied Optics, 2024, 45(4): 873 Copy Citation Text

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Fig. 1. Schematic diagram of proposed sensor

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Fig. 2. Cross-sectional diagram of proposed sensor

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Fig. 3. Relationship between magnetic field and RI of magnetic fluid at different temperatures

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Fig. 4. Dispersion relation curves of core mode, SPP mode and CL

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Fig. 5. Dispersion relation curves under different magnetic field intensities (T=25 ℃)

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Fig. 6. Amplitude sensitivity of sensor under different magnetic field intensities (T=25 ℃)

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Fig. 7. Polynomial fitting of sensor magnetic field intensity and resonant wavelength (T=25 ℃)

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Fig. 8. CL of sensor under different temperatures

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磁场强度/(Oe)	100	250	500	750	1000
幅度灵敏度/ (Oe⁻¹)	−1.07×10⁻¹	−7.7×10⁻²	−3.2×10⁻²	−1.4×10⁻²	−0.7×10⁻²
波长灵敏度/ (nm∙Oe⁻¹)	0.43	0.50	0.55	0.40	0.30
分辨力/(Oe)	2.3×10⁻²	2.0×10⁻²	1.8×10⁻²	2.5×10⁻²	3.3×10⁻²
检测限/ (Oe²∙nm⁻¹)	5.3×10⁻²	4.0×10⁻²	3.3×10⁻²	6.3×10⁻²	1.1×10⁻¹
品质因数/ (Oe⁻¹)	6.73×10⁻²	5.00×10⁻²	2.89×10⁻²	1.06×10⁻²	4.88×10⁻³

Table 1. Amplitude/wavelength sensitivity, resolution, limit of detection, and quality factor under different magnetic field intensities

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文献	检测范围/Oe	幅度灵敏度/(Oe⁻¹)	波长灵敏度/(nm·Oe⁻¹)	分辨力/Oe	品质因数/(RIU⁻¹)
[9]	50~130	−	0.59	1.00×10⁻¹	374.3
[14]	0~1 000	−	0.16	−	4.23×10³
[7]	90~1 000	−5.52×10⁻³	0.56	1.77×10⁻¹	−
[18]	0~500	−	0.044	−	−
本文	80~1 000	−1.07×10⁻¹	0.55	1.80×10⁻²	719.5

Table 2. Performance comparison between proposed sensor and other magnetic field sensors

Xinyu ZHAO, Xingfang JIANG, Zhiqiang RUAN, Lei ZHANG. Research and simulation of fiber sensor for weak magnetic field detection[J]. Journal of Applied Optics, 2024, 45(4): 873

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