经济和容易实现游标效应气泡微腔FPI应变传感极低温交叉灵敏度

IF 3.4 3区物理与天体物理 Q2 INSTRUMENTS & INSTRUMENTATION

Infrared Physics & Technology Pub Date : 2025-05-27 DOI:10.1016/j.infrared.2025.105939

Chao Liu , Jianxin Wang , Jingwei Lv , Xinping Song , Wei Liu , Qiang Liu , Renfeng Li , Liangliang Li , Zao Yi , Paul K. Chu

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引用次数: 0

摘要

基于游标效应的光纤传感器的主要挑战在于其复杂且昂贵的制造工艺。为了解决这个问题，我们提出并演示了一种双平行法布里-普氏干涉仪（FPI）光纤应变传感器。气泡FPI的空腔长度可以通过电弧的迭代融合拼接来精确调整，从而实现游标效应的直接和经济有效的实现。该传感器在0 ~ 300 με范围内的应变灵敏度达到866.6 pm/με，与单个FPI相比提高了29.93倍。此外，在25-150℃范围内，它具有11.91 pm/°C的温度灵敏度和0.01374 με/°C的低温交叉灵敏度，可以满足在显著温度波动下的实际应变监测要求。

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Economical and easily implemented Vernier effect bubble microcavity FPI for strain sensing with extreme low-temperature cross-sensitivity

A major challenge in Vernier-effect-based optical fiber sensors lies in their complex and costly fabrication processes. To address this issue, we propose and demonstrate a dual-parallel Fabry-Pérot interferometer (FPI) optical fiber strain sensor. The cavity length of the bubble-based FPI can be precisely tuned via iterative fusion splicing with an electric arc, enabling straightforward and cost-effective implementation of the Vernier effect. The sensor achieves a strain sensitivity of 866.6 pm/με within the 0–300 με range, representing a 29.93-fold enhancement compared to a single FPI. Additionally, it exhibits a temperature sensitivity of 11.91 pm/°C and a low temperature cross-sensitivity of 0.01374 με/°C over 25–150 °C, fulfilling practical strain monitoring requirements under significant temperature fluctuations.

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来源期刊

Infrared Physics & Technology 物理-光学

CiteScore

5.70

自引率

12.10%

发文量

400

审稿时长

67 days

期刊介绍： The Journal covers the entire field of infrared physics and technology: theory, experiment, application, devices and instrumentation. Infrared'' is defined as covering the near, mid and far infrared (terahertz) regions from 0.75um (750nm) to 1mm (300GHz.) Submissions in the 300GHz to 100GHz region may be accepted at the editors discretion if their content is relevant to shorter wavelengths. Submissions must be primarily concerned with and directly relevant to this spectral region. Its core topics can be summarized as the generation, propagation and detection, of infrared radiation; the associated optics, materials and devices; and its use in all fields of science, industry, engineering and medicine. Infrared techniques occur in many different fields, notably spectroscopy and interferometry; material characterization and processing; atmospheric physics, astronomy and space research. Scientific aspects include lasers, quantum optics, quantum electronics, image processing and semiconductor physics. Some important applications are medical diagnostics and treatment, industrial inspection and environmental monitoring.