Home > Archive>Volume 11, Issue 5, 2015 >379-381. DOI:10.1007/s11801-015-5089-8
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An optical fiber magnetic field sensor based on fiber spherical structure interferometer coated by magnetic fluid
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College of Computer & Communication Engineering, Tianjin University of Technology, Tianjin 300384, China

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This work has been supported by the National Training Programs of Innovation and Entrepreneurship for Undergraduates of China

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    Abstract:

    A novel magnetic field sensor based on optical fiber Mach-Zehnder interferometer (MZI) coated by magnetic fluid (MF) is proposed. The MZI consists of two spherical structures formed on standard single mode fiber (SMF). The interference wavelength and the power of the sensing structure are sensitive to the external refractive index (RI). Since RI of the MF is sensitive to the magnetic field, the magnetic field measurement can be realized by detecting the variation of the interference spectrum. Experimental results show that the wavelength and the power of interference dip both increase with the increase of magnetic field intensity.

    Reference
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    [4] Zhaoxia Sheng, Yaofei Chen and Qun Han, Journal of Optoelectronics.Laser 25, 1044 (2014). (in Chinese)
    [5] Tao Li, Yutang Dai and Qiancheng Zhao, Journal of Optoelectronics.Laser 25, 625 (2014). (in Chinese)
    [6] Chinyin Hong, S. Y. Yang, H. E. Hong and H. C. Yang, Journal of Applied Physics 94, 3849 (2003).
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    [8] Ting Liu, Xianfeng Chen, Ziyun Di, Junfeng Zhang, Xinwan Li and Jianping Chen, Applied Physics Letters 91, 12116 (2009).
    [9] M. Konstantaki, A. Candiani and S. Pissadakis, Magnetic Tuning of Optical Fibre Long Period Gratings Utilizing Ferrofluids, 11th International Conference on Transparent Optical Networks, 1 (2009).
    [10] Peng Zu, Wanghua Xiang, Yangbo Bai and Yongxing Jin, Acta Optica Sinica 31, 8 (2011). (in Chinese)
    [11] Shuo Yuan, Zhengrong Tong, Junfa Zhao, Weihua Zhang and Ye Cao, Optics Communications 332, 154 (2014).
    [12] Nguyen Linh Viet, Hwang Dusun, Moon Sucbei, Moon Dae Seung and Chung Youngjoo, Optics Express 16, 11369 (2008).
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XU Feng-tian, LUAN Pan-pan, JIA Ke-song, ZHANG Ai-ling. An optical fiber magnetic field sensor based on fiber spherical structure interferometer coated by magnetic fluid[J]. Optoelectronics Letters,2015,11(5):379-381

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  • Received:May 13,2015
  • Online: November 26,2015
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