Journal of Guangxi Normal University(Natural Science Edition) ›› 2022, Vol. 40 ›› Issue (6): 1-17.doi: 10.16088/j.issn.1001-6600.2022050501

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Sensing Mechanism and Applications of Mach-Zehnder Interferometer Optical Fiber Sensors

LU Hanglin1,2, SHAO Laipeng1,3, ZHAN Fan4, TANG Jian1,2, LI Yuanpeng1,2, WANG Yongmei1,2, HU Junhui1,2*   

  1. 1. School of Physical Science and Technology, Gungxi Normal University, Guilin Guangxi 541004, China;
    2. Guangxi Key Laboratory of Nuclear Physics and Nuclear Technology (Guangxi Normal University), Guilin Guangxi 541004, China;
    3. School of Physics and Optoelectronic Engineering, Shenzhen University,Shenzhen Guangdong 518060, China;
    4. School of Information Engineering,Guangdong University of Technology, Guangzhou Guangdong 510006, China
  • Received:2022-05-05 Revised:2022-05-30 Online:2022-11-25 Published:2023-01-17

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Abstract: Mach-Zehnder Interferometer (MZI) optical fiber sensor is based on the principle of mode interference, which realizes the sensing and measurement by monitoring the influence of the target on the mode interference. This review expounds the characteristics, sensing mechanism, fabrication technology and sensing application of the MZI optical fiber sensor. The fabrication methods of MZI optical fiber sensor are introduced in detail, including optical fiber dislocation fusion method, fiber core mismatch method, optical fiber side polishing method and optical fiber taper method, etc. The applicability and limitations of the fabrication methods are analyzed and compared. The applications of MZI optical fiber sensor in temperature, strain, liquid level, curvature, pressure, refractive index, dual parameters and biochemical monitoring, as well as the merit and demerit of the sensor are systematically reviewed. Finally, the future development of MZI optical fiber sensors is prospected.

Key words: optical fiber sensor, Mach-Zehnder interferometer, mode interference, fabrication method, sensing application

CLC Number: 

  • TP212
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