Wang Z, Liu H, Ma Z, Chen Z, Wang T, Pang F
Opt Express. 2019 Sep 30;27(20):27691-27701. doi: 10.1364/OE.27.027691.
A Fabry-Perot interferometer (FPI) based on an alumina ceramic derived fiber (CDF) is proposed and demonstrated for high temperature strain sensing. The strain sensor is constructed by splicing a piece of CDF between two standard single-mode fibers (SMFs). The strain properties of the sensor are investigated from room temperature to 1200 °C. Experimental results show that the wavelength shift of the CDF-FPI presents a linear relationship with the tensile strain at both room temperature and high temperature with up to 1000 °C. The strain sensitivity is calculated to be 1.5 pm/µɛ at 900 °C, and the linear response is repeatable within 0-3000 µɛ. Moreover, for each applied force at 1000 °C, the wavelength shift versus time shows the stability of the developed CDF-FPI sensor within 0-2000 µɛ. The obtained results show that such a CDF-FPI has potential application in various engineering areas, such as aeronautics, metallurgy, and gas boiler.
提出并演示了一种基于氧化铝陶瓷衍生光纤（CDF）的法布里-珀罗干涉仪（FPI）用于高温应变传感。该应变传感器通过在两根标准单模光纤（SMF）之间拼接一段CDF构建而成。在室温至1200℃范围内研究了该传感器的应变特性。实验结果表明，CDF-FPI的波长偏移在室温以及高达1000℃的高温下均与拉伸应变呈线性关系。在900℃时计算得出应变灵敏度为1.5 pm/µɛ，并且在0 - 3000 µɛ范围内线性响应具有可重复性。此外，对于在1000℃施加的每个力，波长偏移与时间的关系表明所开发的CDF-FPI传感器在0 - 2000 µɛ范围内具有稳定性。所获得的结果表明，这种CDF-FPI在航空、冶金和燃气锅炉等各种工程领域具有潜在应用。
