Bueno Antonio, Lahem Driss, Caucheteur Christophe, Debliquy Marc
Service d'Electromagnétisme et de Télécommunications, Université de Mons, Boulevard Dolez 31, 7000 Mons, Belgium.
Materia Nova, Materials R&D Centre, Parc Initialis, Avenue Nicolas Copernic 1, 7000 Mons, Belgium.
Sensors (Basel). 2015 Apr 27;15(5):9870-81. doi: 10.3390/s150509870.
In this paper, an NO2 optical fiber sensor is presented for pollution monitoring in road traffic applications. This sensor exploits the simultaneous transmission of visible light, as a measurement signal, and UV light, for the recovery of the NO2 sensitive materials. The sensor is based on a multimode fiber tip coated with a thin film of lutetium bisphthalocyanine (LuPc2). The simultaneous injection of UV light through the fiber is an improvement on the previously developed NO2 sensors and allows the simplification of the sensor head, rendering the external UV illumination of the film unnecessary. Coatings of different thicknesses were deposited on the optical fiber tips and the best performance was obtained for a 15 nm deposited thickness, with a sensitivity of 5.02 mV/ppm and a resolution of 0.2 ppb in the range 0-5 ppm. The response and recovery times are not dependent on thickness, meaning that NO2 does not diffuse completely in the films.
本文提出了一种用于道路交通应用中污染监测的二氧化氮光纤传感器。该传感器利用可见光作为测量信号以及紫外光来恢复二氧化氮敏感材料，实现同时传输。该传感器基于涂有双酞菁镥（LuPc2）薄膜的多模光纤尖端。通过光纤同时注入紫外光，这是对先前开发的二氧化氮传感器的改进，可简化传感器头，无需对薄膜进行外部紫外光照射。在光纤尖端沉积了不同厚度的涂层，对于沉积厚度为15nm的涂层获得了最佳性能，在0 - 5ppm范围内灵敏度为5.02mV/ppm，分辨率为0.2ppb。响应和恢复时间不依赖于厚度，这意味着二氧化氮不会在薄膜中完全扩散。
