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Micro-displacement sensor based on an asymmetric wavy multimode fiber interferometer

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Abstract

We proposed a compact and tunable multimode interferometer (MMI) based on an asymmetric wavy fiber (AMWF), which has axial offset, off-center taper waist, and micro-length. The fabrication process only contains non-axis pulling processes of single-mode fiber on two close positions. Theoretical qualitative analyses and experiments verify the tunable multimode propagation of the AMWF. Experimental results show a nonlinear wavelength response with increasing axis displacement from 0 to 120 µm. In the range of 0–10 µm, the sensitivity reaches the highest value of −1.33 nm/µm. Owing to its cost-effective, high-compact and tunable multimode propagation properties, the AMWF provides a promising platform for micro-nano photonic devices and optical sensing applications.

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Acknowledgements

The authors would like to extend their appreciation to Tianjin Yiyang Technology Co., Ltd. for support to this work.

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Authors and Affiliations

  1. Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Engineering Research Center of Optoelectronic Devices & Communication Technology, Ministry of Education, Tianjin University of Technology, Tianjin, 300384, China

    Yuanzheng Li, Yi Li, Yinping Miao, Fang Wang, Kai Hu & Kailiang Zhang

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  1. Yuanzheng Li
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  2. Yi Li
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  3. Yinping Miao
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  4. Fang Wang
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  5. Kai Hu
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  6. Kailiang Zhang
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Corresponding authors

Correspondence to Yi Li or Kailiang Zhang.

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The authors declare that there are no conflicts of interest related to this article.

This work has been supported by the National Key Research and Development Program of China (No.2017YFB0405600), the National Natural Science Foundation of China (Nos.62001326, 61274113 and 61404091), the Natural Science Foundation of Tianjin City (Nos.18JCYBJC85700 and 18JCZDJC30500), the Open Project of State Key Laboratory of Functional Materials for Information (No.SKL202007), and the Science and Technology Planning Project of Tianjin City (No.20ZYQCGX00070).

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Li, Y., Li, Y., Miao, Y. et al. Micro-displacement sensor based on an asymmetric wavy multimode fiber interferometer. Optoelectron. Lett. 19, 134–138 (2023). https://doi.org/10.1007/s11801-023-2139-5

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  • DOI: https://doi.org/10.1007/s11801-023-2139-5

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