Photonic Sensors, Volume. 14, Issue 3, 240305(2024)

Analysis of the Sapphire Fiber Fabry-Perot Interferometer Fringe Visibility Under Different Excitation Conditions

Jiawei ZHANG1...2, Rui TANG3,*, Dongsheng ZHANG1,2, and Minghong YANG12 |Show fewer author(s)
Author Affiliations
  • 11School of Information Engineering, Wuhan University of Technology, Wuhan 430070, China
  • 2National Engineering Research Center of Fiber Optic Sensing Technology and Networks, Wuhan University of Technology, Wuhan 430070, China
  • 3AECC Shenyang Engine Institute, Shenyang 110015, China
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    In this paper, a theoretical analysis of how the excitation conditions affect the sapphire fiber Fabry-Perot interferometer (SFPI) visibility was performed. The conditions were considered, in which an SFPI was excited by a single-mode fiber (SMF), a multimode fiber (MMF), and a fiber collimator. The finite difference method (FDM) was used to realize the numerical solution of the modal electric fields, and then, the modal excited distributions in the sapphire fiber and the SFPI visibility were calculated. The results showed that different numbers of modes were excited in sapphire fibers under different excitation conditions and finally affected the fringe visibility of the SFPI. The fiber collimator excited the fewest modes and the visibility remained at the highest level.Finally, an experiment was performed, and the experimental results agreed well with the theoretical results.

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    Jiawei ZHANG, Rui TANG, Dongsheng ZHANG, Minghong YANG. Analysis of the Sapphire Fiber Fabry-Perot Interferometer Fringe Visibility Under Different Excitation Conditions[J]. Photonic Sensors, 2024, 14(3): 240305

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    Paper Information

    Category: Regular

    Received: May. 31, 2023

    Accepted: Sep. 25, 2023

    Published Online: Aug. 16, 2024

    The Author Email: TANG Rui (dril_don@163.com)

    DOI:10.1007/s13320-024-0700-x

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