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All-Fiber Magnetic Field Sensor Based on Hollow Optical Fiber and Magnetic Fluid

机译:基于空心光纤和磁流体的全光纤磁场传感器

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摘要

A compact all-fiber magnetic field sensor is achieved by using Mach-Zehnder interferometer based on the hollow optical fiber (HOF) and the magnetic fluid (MF). The HOF is sandwiched between two single mode fibers (SMFs), which form an SMF-HOF-SMF (SHS) structure. Then, the SHS structure is immersed in MF to sense the magnetic field strength. The magnetic field assisted tunable refractive index of MF is exploited to realize the sensor. As a result, the magnetic field strength can be obtained by monitoring the wavelength shift of the SHS structure. The maximum magnetic field sensing sensitivity of -170 pm/Oe is obtained at the wavelength around 1580 nm. Besides, an intensity sensitivity of -0.21268 dB/Oe is also achieved.
机译:通过使用基于中空光纤(HOF)和磁流体(MF)的Mach-Zehnder干涉仪来实现紧凑的全光纤磁场传感器。 HOF夹在两个单模光纤(SMF)之间,形成SMF-HOF-SMF(SHS)结构。然后,将SHS结构浸入MF中以感应磁场强度。 MF的磁场辅助可调折射率被用于实现传感器。结果,可以通过监视SHS结构的波长偏移来获得磁场强度。在大约1580 nm的波长处可获得-170 pm / Oe的最大磁场感测灵敏度。此外,强度灵敏度为-0.21268 dB / Oe。

著录项

  • 来源
    《Sensors Journal, IEEE》 |2017年第3期|619-622|共4页
  • 作者单位

    Key Laboratory of Specialty Fiber Optics and Optical Access Network, Shanghai University, Shanghai, China;

    Key Laboratory of Specialty Fiber Optics and Optical Access Network, Shanghai University, Shanghai, China;

    Key Laboratory of Specialty Fiber Optics and Optical Access Network, Shanghai University, Shanghai, China;

    Key Laboratory of Specialty Fiber Optics and Optical Access Network, Shanghai University, Shanghai, China;

    College of Science, University of Shanghai for Science and Technology, Shanghai, China;

    Key Laboratory of Specialty Fiber Optics and Optical Access Network, Shanghai University, Shanghai, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Magnetic fields; Optical fiber sensors; Magnetic sensors; Sensitivity; Interference; Magnetic liquids;

    机译:磁场;光纤传感器;磁性传感器;灵敏度;干扰;磁性液体;

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