Anti-Crosstalk Fiber-Optic Liquid Level Sensor Based on Hollow-Core Bragg Fiber

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-03-14 DOI:10.1109/LPT.2025.3551497

Qing Chang;Feng Zhou;Cun Chang;Qi Sheng;Liangtao Hou;Jianwei Li

引用次数: 0

Abstract

In this letter, we develop a novel fiber-optic sensor based on a hollow-core Bragg fiber (HCBF) for high-precision detection of liquid level. The intensity responses of anti-resonance reflecting optical waveguide are theoretically analyzed in terms of level and refractive index (RI) of liquid. Simultaneous measurements are conducted and the obvious intensity variations as the changed liquid level are exhibited, with near-zero RI crosstalk. The average liquid level sensitivity reaches −11.24 dB/cm in the range of

$0 \sim 4$

cm, with high linearity. Additionally, high repeatability and low temperature intensity drift guarantee the measurement error can be constrained within 0.03 mm.

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基于空心布拉格光纤的抗串扰光纤液位传感器

在这封信中，我们开发了一种基于中空芯布拉格光纤（HCBF）的新型光纤传感器，用于高精度液位检测。从理论上分析了反谐振反射光波导的强度响应与液位和液体折射率（RI）的关系。同时进行的测量显示，随着液位的变化，强度也会发生明显变化，RI 串扰几乎为零。在 $0 \sim 4$ cm 范围内，平均液位灵敏度达到 -11.24 dB/cm，线性度高。此外，高重复性和低温度强度漂移可确保测量误差控制在 0.03 毫米以内。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.