Fiber optic refractive index sensor based on U-Tapered structure

Jinfeng Wang; Xinghong Chen; Xuejin Li; Yuzhi Chen

doi:10.1117/12.3031642

18 July 2024 Fiber optic refractive index sensor based on U-Tapered structure

Jinfeng Wang, Xinghong Chen, Xuejin Li, Yuzhi Chen

Proceedings Volume 13179, International Conference on Optics and Machine Vision (ICOMV 2024); 131790I (2024) https://doi.org/10.1117/12.3031642
Event: International Conference on Optics and Machine Vision (ICOMV 2024), 2024, Nanchang, China

Abstract

In this paper, an inserted U-tapered fiber optic probe is proposed, which has the characteristics of simple structure, small size, easy to manufacture, easy to store, and can realize the detection of parameters in small space. In this work, firstly, we optimize the parameters of the linear taper sensor from the theoretical simulation and experiment, and then prepare the linear taper sensor structure into a U-tapered fiber optic probe according to the optimized parameters, and explore the influence of different U-tapered curvature radius on the interference spectrum. According to the research results, when the curvature radius of the U-tapered fiber optic probe is 1. 75 mm, the sensor has a good response to refractive index (RI), and the RI sensitivity is 386. 23 nm/RIU, the linear responsivity is 0. 998, and the measured temperature sensitivity is -0. 04 nm/℃, and the response to temperature is not significant. This work provides a feasible method for the future development of RI detection in narrow space.

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

Citation Download Citation

Jinfeng Wang, Xinghong Chen, Xuejin Li, and Yuzhi Chen "Fiber optic refractive index sensor based on U-Tapered structure", Proc. SPIE 13179, International Conference on Optics and Machine Vision (ICOMV 2024), 131790I (18 July 2024); https://doi.org/10.1117/12.3031642

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