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Low-temperature-sensitive relative humidity sensor based on tapered square no-core fiber coated with SiO2 nanoparticles

机译：基于包覆有SiO2纳米粒子的方形无芯锥形纤维的低温敏感相对湿度传感器

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摘要

A low-temperature-sensitive relative humidity (RH) sensor based on multimode interference effects has been proposed. The sensor consists of a section of tapered square no-core fiber (TSNCF) coated with SiO2 nanoparticles which is fabricated by splicing the TSNCF with two single-mode fibers (SMFs). The refractive index of SiO2 nanoparticles changes with the variation of environmental humidity levels. Characteristics of the transmission spectral have been investigated under different humidity levels. The wavelength shifts up to 10.2 nm at 1410 nm and 11.5 nm at 1610 nm for a RH range of 43.6-98.6% have been experimentally achieved, and the corresponding sensitivities reach 456.21 pm/%RH and 584.2 pm/% RH for a RH range of 83-96.6%, respectively. The temperature response of the proposed sensor has also been experimentally investigated. Due to the fact that the sensing head is made of a pure silica rod with a low thermal expansion coefficient and the thermo-optic coefficient, the transmission spectrum shows a low temperature sensitivity of about 6 pm/degrees C for an environmental temperature of 20.9-80 degrees C, which is a desirable merit to resolve the temperature cross sensitivity. Therefore, the proposed sensor could be applied to breath analysis applications with low temperature fluctuations. (C) 2016 Elsevier Inc. All rights reserved.
机译：提出了一种基于多模干扰效应的低温敏感相对湿度传感器。该传感器由一段涂有SiO2纳米粒子的锥形方形无芯光纤（TSNCF）组成，该光纤是通过将TSNCF与两个单模光纤（SMF）拼接在一起而制成的。 SiO2纳米颗粒的折射率随环境湿度水平的变化而变化。已经研究了在不同湿度水平下的透射光谱特性。对于43.6-98.6％的RH范围，已通过实验获得了波长分别在1410 nm和10.10 nm在1410 nm和11.5 nm处的位移，并且在RH范围内，相应的灵敏度分别达到456.21 pm /％RH和584.2 pm /％RH。分别为83-96.6％。提议的传感器的温度响应也已通过实验进行了研究。由于传感头由具有低热膨胀系数和热光系数的纯硅胶棒制成，因此透射光谱显示在环境温度为20.9-0.9°C时的低温灵敏度约为6 pm /°C。 80摄氏度，这是解决温度交叉灵敏度的理想之选。因此，所提出的传感器可以应用于温度波动较小的呼吸分析应用。 （C）2016 Elsevier Inc.保留所有权利。

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  • 来源
    《Optical fiber technology》 |2016年第5期|59-64|共6页
  • 作者

    Miao Yinping; Ma Xixi; He Yong; Zhang Hongmin; Zhang Hao; Song Binbin; Liu Bo; Yao Jianquan;

  • 作者单位

    Tianjin Univ Technol, Sch Elect Informat Engn, Tianjin Key Lab Film Elect & Commun Device, Tianjin 300384, Peoples R China|Tianjin Univ, Inst Laser & Optoelect, Coll Precis Instruments & Optoelect Engn, Tianjin 300072, Peoples R China;

    Tianjin Univ Technol, Sch Elect Informat Engn, Tianjin Key Lab Film Elect & Commun Device, Tianjin 300384, Peoples R China;

    Tianjin Univ Technol, Sch Elect Informat Engn, Tianjin Key Lab Film Elect & Commun Device, Tianjin 300384, Peoples R China;

    Tianjin Univ Technol, Sch Elect Informat Engn, Tianjin Key Lab Film Elect & Commun Device, Tianjin 300384, Peoples R China;

    Nankai Univ, Inst Modern Opt, Tianjin 300071, Peoples R China;

    Nankai Univ, Inst Modern Opt, Tianjin 300071, Peoples R China;

    Nankai Univ, Inst Modern Opt, Tianjin 300071, Peoples R China;

    Tianjin Univ, Inst Laser & Optoelect, Coll Precis Instruments & Optoelect Engn, Tianjin 300072, Peoples R China;

  • 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 eng
  • 中图分类
  • 关键词

    Multimode interference; No-core fiber; SiO2 nanoparticles; Relative humidity;

    机译：多模干涉无芯光纤SiO2纳米粒子相对湿度;

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