Fiber grating loop ring-down strain sensors using overlap spectrum demodulation and machine learning algorithm

Chen Dongying; Zhang Hao; Xiao YiyiZhang ZilongChen WeijuanHuang ShuyanChen Huaixi

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Fiber grating loop ring-down strain sensors using overlap spectrum demodulation and machine learning algorithm

机译：Fiber grating loop ring-down strain sensors using overlap spectrum demodulation and machine learning algorithm

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摘要

The fiber grating loop ring-down (FGLRD) can be used in strain sensors to reduce costs and enhance system sensitivity. Introducing the overlap spectrum demodulation technology in the FGLRD can improve the system's linearity and expand the measurement range. However, there is always strong amplified spontaneous emission (ASE) noise owing to erbium-doped fiber amplifiers (EDFAs) in the FGLRD structure. The noise increases the difficulty of detecting the output ring-down spectrum and reduces the detection accuracy. This study proposes a machine learning algorithm for data processing of chirped FGLRD strain sensors based on overlap spectrum demodulation. It uses a global average pooling one-dimensional convolutional neural network algorithm to construct a data recognition model. The experimental results show that the method can improve the recognition accuracy and reduce the recognition errors caused by ASE noise compared to the conventional ring-down spectral peak detection method. The model accuracy was 100 for the training and test sets and 98 for the validation set. The loss value was close to 0.06, and the recognition time was approximately 0.5 ms.

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来源
《Optical fiber technology》 |2023年第3期|103248.1-103248.8|共8页
作者
Chen Dongying; Zhang Hao; Xiao YiyiZhang ZilongChen WeijuanHuang ShuyanChen Huaixi;
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作者单位

Fujian Jiangxia Univ||Smart Home Informat Collect & Proc Internet Things;

Fujian Jiangxia Univ||Smart Home Informat Collect & Proc Internet Things||Fujian Jiangxia Univ;

Fuzhou UnivFujian Jiangxia UnivChinese Acad Sci;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类
关键词
Fiber grating loop ring -down (FGLRD); Strain sensor; Overlap spectrum; Machine learning algorithm; One-dimensional convolutional neural network; (1D-CNN);

Fiber grating loop ring-down strain sensors using overlap spectrum demodulation and machine learning algorithm

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