Wang Kun, Dong Xingchen, Kienle Patrick, Fink Maximilian, Kurz Wolfgang, Köhler Michael H, Jakobi Martin, Koch Alexander W
Department of Electrical and Computer Engineering, Institute for Measurement Systems and Sensor Technology, Technical University of Munich, Theresienstraße 90, 80333 Munich, Germany.
Micromachines (Basel). 2021 Oct 13;12(10):1239. doi: 10.3390/mi12101239.
A variety of specialty fibers such as no-core fiber (NCF) have already been studied to reveal their sensing abilities. In this work, we investigate a specialty fiber, square-core fiber, for temperature and strain sensing. A simple single-mode-multimode-single-mode (SMS) fiber sensor was fabricated, consisting of a 30-cm-long square-core fiber. The experimental results indicate that the maximal wavelength-temperature and wavelength-strain sensitivities are -15.3 pm/∘C and -1.5 pm/με, respectively, while the maximal power-temperature and power-strain sensitivities are 0.0896 dBm/∘C and 0.0756 dBm/με. Analysis of the results suggests that the fiber sensor has the potential to be used as a high-sensitivity temperature sensor with a low strain sensitivity.
人们已经对多种特种光纤进行了研究，以揭示它们的传感能力，例如无芯光纤（NCF）。在这项工作中，我们研究了一种用于温度和应变传感的特种光纤——方形芯光纤。制作了一种简单的单模-多模-单模（SMS）光纤传感器，它由一根30厘米长的方形芯光纤组成。实验结果表明，最大波长-温度和波长-应变灵敏度分别为-15.3 pm/°C和-1.5 pm/με，而最大功率-温度和功率-应变灵敏度分别为0.0896 dBm/°C和0.0756 dBm/με。对结果的分析表明，该光纤传感器有潜力用作低应变灵敏度的高灵敏度温度传感器。
