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首页> 外文期刊>Journal of the Optical Society of America, B. Optical Physics >Reflective optical fiber sensor based on light polarization modulation for hydrogen sensing
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Reflective optical fiber sensor based on light polarization modulation for hydrogen sensing

机译:基于光偏振调制的反射光纤传感器

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摘要

A simple reflective hydrogen-sensing system based on polarization modulation is proposed and experimentally demonstrated. The sensing unit consists of a polarizer, a polarization control, and a sensing head composed of a short segment of polarization-maintaining fiber (PMF) with a Pt-loaded WO3 coating. When the sensing head is exposed to a hydrogen environment, heat is generated due to the interaction between hydrogen and WO3 with the help of catalyst Pt in air; then, the local temperature of the PMF increases, which results in the reflection spectrum shift because the light polarization state changes due to the variation of the birefringence coefficient of the PMF. Experimental results show that the system is capable of producing a rapid response to hydrogen with a high sensitivity of similar to 18.04 nm/%(vol%) within the concentration range of 0-4% (vol%). Additionally, the sensing head has a probe structure with reflective measurement and immunity to humidity. Such features make the sensing system promising in the fields of hydrogen transportation or storage. (C) 2019 Optical Society of America
机译:提出了一种基于偏振调制的简单反射氢感系统,并实验证明。传感单元由偏振器,偏振控制和由具有PT加载的WO3涂层的偏振 - 保持纤维(PMF)的短段组成的感测头组成。当感测头暴露于氢气环境时,由于氢气与空气中的催化剂Pt之间的氢和WO3之间的相互作用,产生热量;然后,PMF的局部温度增加,这导致反射谱偏移,因为光偏振状态由于PMF的双折射系数的变化而变化。实验结果表明,该系统能够产生高灵敏度的氢气的快速反应,其浓度范围为0-4%(Vol%)。另外,传感头具有探针结构,具有反射测量和湿度的免疫。这些特征使得传感系统在氢气运输或储存领域承诺。 (c)2019年光学学会

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  • 作者单位

    China Jiliang Univ Coll Opt &

    Elect Technol Hangzhou 310018 Peoples R China;

    China Jiliang Univ Coll Opt &

    Elect Technol Hangzhou 310018 Peoples R China;

    China Jiliang Univ Coll Opt &

    Elect Technol Hangzhou 310018 Peoples R China;

    China Jiliang Univ Coll Opt &

    Elect Technol Hangzhou 310018 Peoples R China;

    China Jiliang Univ Coll Opt &

    Elect Technol Hangzhou 310018 Peoples R China;

    Macau Univ Sci &

    Technol Fac Informat &

    Technol Taipa 999078 Macao Peoples R China;

    Wuhan Univ Technol Natl Engn Lab FiberOpt Sensing Technol Wuhan 430070 Peoples R China;

    Univ Alabama Dept Phys Huntsville AL 35899 USA;

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  • 正文语种 eng
  • 中图分类 光学;
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