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基于光子集成芯片的可穿戴光纤光栅解调研究

李鸿强 毛泉桦 安芷萱 林志琳 王英杰 孟文涛 朱智越 张振 Juan DanielPrades Garcia

李鸿强, 毛泉桦, 安芷萱, 林志琳, 王英杰, 孟文涛, 朱智越, 张振, Juan DanielPrades Garcia. 基于光子集成芯片的可穿戴光纤光栅解调研究[J]. 应用光学.
引用本文: 李鸿强, 毛泉桦, 安芷萱, 林志琳, 王英杰, 孟文涛, 朱智越, 张振, Juan DanielPrades Garcia. 基于光子集成芯片的可穿戴光纤光栅解调研究[J]. 应用光学.
Li Hongqiang, Mao Quanhuan, An Zhixuan, Lin Zhilin, Wang Yingjie, Meng Wentao, Zhu Zhiyue, Zhang Zhen, Juan Daniel Prades Garcia. Research on wearable fiber grating demodulation based on photonic integrated chip[J]. Journal of Applied Optics.
Citation: Li Hongqiang, Mao Quanhuan, An Zhixuan, Lin Zhilin, Wang Yingjie, Meng Wentao, Zhu Zhiyue, Zhang Zhen, Juan Daniel Prades Garcia. Research on wearable fiber grating demodulation based on photonic integrated chip[J]. Journal of Applied Optics.

基于光子集成芯片的可穿戴光纤光栅解调研究

基金项目: 国家自然科学基金(61675154);天津市重点研发计划项目(19YFZCSY00180);天津市科技计划项目(20YDTPJC01380)
详细信息
    作者简介:

    李鸿强(1975—),男,博士,教授,主要从事光纤光栅传感与解调技术研究。E-mail:lihongqiang@tiangong.edu.cn

    通讯作者:

    李鸿强(1975—),男,博士,教授,主要从事光纤光栅传感与解调技术研究。E-mail:lihongqiang@tiangong.edu.cn

  • 中图分类号: TN914

Research on wearable fiber grating demodulation based on photonic integrated chip

  • 摘要: 为了实现光纤光栅传感器在可穿戴系统中的应用,提出了一种基于硅基光子集成芯片的可穿戴光纤光栅传感解调系统。基于比利时iSiPP50G工艺的光子集成芯片由4×1长波长VCSEL阵列、1×8阵列波导光栅、2×2 MMI耦合器、4×1光纤光栅耦合器阵列、Ge-on-Si波导光电探测器、直波导和弯曲波导等组成。在完成对VCSEL光源金线键合和光子集成芯片光纤耦合封装的基础上,设计了手环式解调电路,对人体温度和心音信号进行了实时测量。实验结果表明: 解调系统的动态波长检测范围为1 540 nm~1 560 nm,波长分辨率为0.08 pm,解调精度为5 pm,温度监测范围为35 ℃~42 ℃,误差为±0.1 ℃;可检测50 Hz~100 Hz频率范围内的心音信号,可识别出第一心音和第二心音,并计算出心动周期、心率、第一心音时限、第二心音时限和心力等特征参数。
  • 图  1  解调系统示意图

    Fig.  1  Schematic diagram of demodulation system

    图  2  柔性电路实物图

    Fig.  2  Physical map of flexible circuit

    图  3  温度解调原理图

    Fig.  3  Schematic diagram of temperature interrogation

    图  4  心音解调原理图

    Fig.  4  Schematic diagram of heart sound interrogation

    图  5  传感器实物图和实验结果

    Fig.  5  Physical map of sensor and experimental results

    图  6  温度解调实验结果

    Fig.  6  Experimental results of temperature interrogation

    图  7  传感器实物图和信号处理

    Fig.  7  Physical map of sensor and the signal processing

    图  8  心音信号处理和特征提取流程图

    Fig.  8  Flow diagram of heart sound signal processing and feature extraction

    表  1  实测心音信号特征参数

    Table  1  Measured characteristic parameters of the heart sounds

    心动周期/ms心率/min−1第一心音
    时限/ms
    第二心音
    时限/ms
    心力
    实测值803 75116 710.92
    正常范围600−100060−10080−16060−1200.5−2.5
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-05-02
  • 修回日期:  2022-05-31
  • 网络出版日期:  2022-11-22

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