@inproceedings{bd5fc81155644c968e461ef03947e3cd,
title = "Liquid-level Measurement Based on Phase-Sensitive Optical Fiber distributed sensor",
abstract = "This paper presents a high-resolution remote liquid-level measurement method based on common-path self-referenced phase-sensitive optical frequency-domain reflectometry (φ-OFDR). The sensor structure was employed by uniformly winding a scattering-enhanced optical fiber around a metal cylinder and then placing it vertically in a water container. The working principle relies on the distinct thermal characteristics of the gas-liquid interface, where temperature differences cause measurable phase changes in the backscattered φ-OFDR signals. The proposed sensing system in the experiment could sensitively and accurately identify liquid level changes at the end of a 25 km fiber. The results show a strong linear positive correlation between phase shift and liquid level change, achieving an outstanding resolution of 0.059 millimeters.",
keywords = "High-resolution, Remote liquid-level measurement, Remote φ-OFDR",
author = "Hongwei Li and Yihao Liu and Yanda Qu and Tianfu Li and Shuaiqi Liu and Yongkang Dong",
note = "Publisher Copyright: {\textcopyright} 2025 SPIE.; 14th National Conference on Photonics ; Conference date: 15-08-2025 Through 17-08-2025",
year = "2025",
month = dec,
day = "2",
doi = "10.1117/12.3091091",
language = "英语",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Yongkang Dong and Hongwei Li",
booktitle = "Fourteenth National Conference on Photonics",
address = "美国",
}