Nano-precision displacement optical fiber sensor based on double-layer dielectric metasurface

Hua Tu; Weikang Yao; Hao Liu; Hao Ke; Ai Zhou

doi:10.1117/12.3048553

5 December 2024 Nano-precision displacement optical fiber sensor based on double-layer dielectric metasurface

Hua Tu, Weikang Yao, Hao Liu, Hao Ke, Ai Zhou

Author Affiliations +

Proceedings Volume 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024); 134182C (2024) https://doi.org/10.1117/12.3048553
Event: 15th International Conference on Information Optics and Photonics (CIOP2024), 2024, Xi’an, China

Abstract

A displacement fiber optic sensor integrating a double-layer metasurface was proposed and simulated. The sensor consists of two parallel single-mode optical fibers, which are encapsulated in glass tubes at the connection. The fiber end face is integrated with the sub surface of the medium. The displacement change of the structure is determined by the drift of the center wavelength of the transmission spectrum. When the glass tube undergoes displacement under stress, the length of the cavity changes accordingly. By tracking the drift of the central wavelength in the transmission spectrum, its displacement can be determined. Results show that the measurement resolution of the microfiber displacement sensor can reach the nm level, and it has great application prospects in precision sensing measurement of small displacements.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Hua Tu, Weikang Yao, Hao Liu, Hao Ke, and Ai Zhou "Nano-precision displacement optical fiber sensor based on double-layer dielectric metasurface", Proc. SPIE 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024), 134182C (5 December 2024); https://doi.org/10.1117/12.3048553

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