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首页> 外文期刊>Applied optics >Titanium dioxide nanoparticle based optical fiber humidity sensor with linear response and enhanced sensitivity
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Titanium dioxide nanoparticle based optical fiber humidity sensor with linear response and enhanced sensitivity

机译：基于二氧化钛纳米粒子的光纤湿度传感器，具有线性响应和更高的灵敏度

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摘要

An optical fiber humidity sensor employing an in-house scaled TiO_(2)-nanoparticle doped nanostructured thin film as the fiber sensing cladding and evanescent wave absorption is reported. The main objective of the present work is to achieve a throughout-linear sensor response with high sensitivity, possibly over a wide dynamic range using the simplest possible sensor geometry. In order to realize this, first, the nanostructured sensing film is synthesized over a short length of a centrally decladded straight and uniform optical fiber and then a comprehensive experimental investigation is carried out to optimize the design configuration/parameters of the nanostructured sensing film and to achieve the best possible sensor response. Much improved sensitivity of 27.1 mV/(percent)RH is observed for the optimized sensor along with a throughout-linear sensor response over a dynamic range as wide as 24percent to 95(percent)RH with an average response time of 0.01 s for humidification and 0.06 s for desiccation. In addition, the sensor exhibits a very good degree of reversibility and repeatability.
机译：报道了一种光纤湿度传感器，该传感器采用内部按比例缩放的TiO_（2）-纳米粒子掺杂的纳米结构薄膜作为光纤传感包层和消逝波吸收。本工作的主要目的是使用最简单的传感器几何形状，在宽动态范围内实现具有高灵敏度的全线性传感器响应。为了实现这一点，首先，在短长度的中心剥落的直且均匀的光纤上合成纳米结构的传感膜，然后进行全面的实验研究以优化纳米结构的传感膜的设计配置/参数，并获得最佳的传感器响应。最佳化传感器的灵敏度提高了27.1 mV /（％）RH，动态范围高达24％到95（RH）的动态范围内，整个线性传感器的响应得到了改善，加湿和制冷的平均响应时间为0.01 s。干燥时间为0.06 s。此外，该传感器还具有很好的可逆性和可重复性。

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