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

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

doi:10.1109/LPT.2025.3551497

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

Qing Chang
, Feng Zhou
, Cun Chang^*
, Qi Sheng
, Liangtao Hou
, Jianwei Li

^*Corresponding author for this work

Communication University of Zhejiang
Harbin Institute of Technology Weihai
Heilongjiang University

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

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 ∼4 cm, with high linearity. Additionally, high repeatability and low temperature intensity drift guarantee the measurement error can be constrained within 0.03 mm.

Original language	English
Pages (from-to)	469-472
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	37
Issue number	8
DOIs	https://doi.org/10.1109/LPT.2025.3551497
State	Published - 2025
Externally published	Yes

Keywords

Optical fiber sensor
hollow-core Bragg fiber
intensity modulation
liquid level

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10.1109/LPT.2025.3551497

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title = "Anti-Crosstalk Fiber-Optic Liquid Level Sensor Based on Hollow-Core Bragg Fiber",

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 ∼4 cm, with high linearity. Additionally, high repeatability and low temperature intensity drift guarantee the measurement error can be constrained within 0.03 mm.",

keywords = "Optical fiber sensor, hollow-core Bragg fiber, intensity modulation, liquid level",

author = "Qing Chang and Feng Zhou and Cun Chang and Qi Sheng and Liangtao Hou and Jianwei Li",

note = "Publisher Copyright: {\textcopyright} 1989-2012 IEEE.",

year = "2025",

doi = "10.1109/LPT.2025.3551497",

language = "英语",

volume = "37",

pages = "469--472",

journal = "IEEE Photonics Technology Letters",

issn = "1041-1135",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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TY - JOUR

T1 - Anti-Crosstalk Fiber-Optic Liquid Level Sensor Based on Hollow-Core Bragg Fiber

AU - Chang, Qing

AU - Zhou, Feng

AU - Chang, Cun

AU - Sheng, Qi

AU - Hou, Liangtao

AU - Li, Jianwei

PY - 2025

Y1 - 2025

N2 - 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 ∼4 cm, with high linearity. Additionally, high repeatability and low temperature intensity drift guarantee the measurement error can be constrained within 0.03 mm.

AB - 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 ∼4 cm, with high linearity. Additionally, high repeatability and low temperature intensity drift guarantee the measurement error can be constrained within 0.03 mm.

KW - Optical fiber sensor

KW - hollow-core Bragg fiber

KW - intensity modulation

KW - liquid level

UR - https://www.scopus.com/pages/publications/105003197712

U2 - 10.1109/LPT.2025.3551497

DO - 10.1109/LPT.2025.3551497

M3 - 文章

AN - SCOPUS:105003197712

SN - 1041-1135

VL - 37

SP - 469

EP - 472

JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

IS - 8

ER -

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

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Keywords

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