High-performance temperature sensor via Mach-Zehnder interferometer based on exposed-core microstructured fiber combined with PDMS

IF 2.6 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2025-05-28 DOI:10.1016/j.yofte.2025.104284

XingHong Zhou , Duo Yi , DongQing Li , XingHong Chen , YouFu Geng , XueJin Li

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引用次数: 0

Abstract

This study proposes a fiber optic temperature sensor based on an exposed-core fiber (ECF) combined with polydimethylsiloxane (PDMS). Owing to the unique structure design of ECF and the high-performance of PDMS, a triple interference effect occurs within the device. Then, by employing the interrogation techniques including fast Fourier transform (FFT) and band-pass filtering, mixed interference spectra can be effectively separated in the spatial domain, and each of them can be individually applied for temperature measurement. The experimental results demonstrate that high-sensitivity (8.2 nm/℃) or large-range (160 ℃) temperature measurements can be realized based on the separated interference spectra. Such an excellent performance is significantly enhanced over previously reported fiber temperature sensors. More importantly, different from the traditional methods by cascading two different sensing elements, high-sensitivity and large-range temperature measurement is achieved within a single sensor structure, significantly reducing the volume and complexity of the sensing device.

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基于暴露芯微结构光纤结合PDMS的高性能Mach-Zehnder干涉仪温度传感器

本研究提出了一种基于暴露芯光纤（ECF）与聚二甲基硅氧烷（PDMS）结合的光纤温度传感器。由于ECF独特的结构设计和PDMS的高性能，器件内部会产生三重干扰效应。然后，采用快速傅里叶变换（FFT）和带通滤波技术，在空间域中有效分离混合干涉光谱，并将其单独应用于温度测量。实验结果表明，利用分离的干涉光谱可以实现高灵敏度（8.2 nm/℃）或大范围（160℃）的温度测量。这种优异的性能比以前报道的光纤温度传感器显著增强。更重要的是，与传统的两种不同传感元件级联的方法不同，在单个传感器结构内实现了高灵敏度和大范围的温度测量，大大减少了传感装置的体积和复杂性。

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

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.