Simultaneous sensing of axial strain and temperature based on a sensitivity-selectable all-fiber Lyot-like filter

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2024-11-22 DOI:10.1016/j.optcom.2024.131341

Zhengyu Liu , Rong Tian , Haiwei Zhang , Sibo Zhang , Zhihong Chen , Lifang Xue , Wei Shi , Jianquan Yao

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引用次数: 0

Abstract

In this paper, an all-fiber Lyot-like filter with tunable free spectral range (FSR) and selectable sensitivity is proposed and experimentally demonstrated for simultaneous sensing of axial strain and temperature. Compared to the traditional fiber-based Lyot filter, the Lyot-like filter has an additional single-mode fiber (SMF) based polarization controller (PC), which is placed between two sections of polarization-maintaining fiber (PMF). In our experiment, the tunable FSR is achieved by adjusting the PC at a special angle, and a small FSR value of 6.58 nm and a large FSR value of 18.49 nm are obtained, respectively. Moreover, the experimental results show that the small FSR has low axial strain and temperature sensitivity, while that of the large FSR is high. By detecting the wavelength shifts of the filter spectra dip points, the simultaneous sensing of axial strain and temperature can be realized easily using a dual-parameter matrix. The proposed Lyot-like filter has the advantages of tunable FSR, selectable sensitivity, and simultaneous measurement of temperature and axial strain, which shows potential sensing applications in aerospace, chemical production, and bridge condition monitoring.

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轴向应变和温度的同时传感基于灵敏度可选的全纤维lyot样滤波器

本文提出了一种自由光谱范围可调、灵敏度可选的lyot类全光纤滤波器，并进行了实验验证，用于轴向应变和温度的同时传感。与传统的基于光纤的Lyot滤波器相比，类Lyot滤波器增加了一个基于单模光纤（SMF）的偏振控制器（PC），该控制器位于两段保偏光纤（PMF）之间。在我们的实验中，通过在特定角度调节PC来实现可调谐的FSR，获得了小FSR值6.58 nm和大FSR值18.49 nm。实验结果表明，小FSR具有较低的轴向应变和温度敏感性，而大FSR具有较高的轴向应变和温度敏感性。通过检测滤波器光谱倾角点的波长位移，利用双参数矩阵可以方便地实现轴向应变和温度的同时检测。所提出的类lyot滤波器具有FSR可调、灵敏度可选、温度和轴向应变可同时测量等优点，在航空航天、化工生产和桥梁状态监测等领域具有潜在的传感应用前景。

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

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.