Wang Guangyao, Lu Ying, Yang Xianchao, Duan Liangcheng, Yao Jianquan
Appl Opt. 2019 Mar 10;58(8):2132-2136. doi: 10.1364/AO.58.002132.
A square-lattice alcohol-filled photonic crystal fiber temperature sensor based on a Sagnac interferometer (SI) is designed and analyzed by the finite element method. Alcohol is filled in all air holes in the cladding. The temperature-sensing properties of the proposed fiber sensor are investigated. Simulation results exhibit the transmission spectrums of the fiber SI will shift with the change of temperature, because the birefringence of the alcohol-filled fiber will change under different temperatures. The temperature sensitivity is obtained from the fitting line of the temperature and resonant wavelength. The average sensitivity can reach to 16.55 nm/°C in the range from 45°C to 75°C. This designed fiber temperature sensor has advantages in simple structure and high sensitivity. It can be used to detect temperature in complex environments.
设计了一种基于萨尼亚克干涉仪（SI）的方形晶格充醇光子晶体光纤温度传感器，并采用有限元方法进行了分析。包层中的所有气孔都填充了酒精。研究了所提出的光纤传感器的温度传感特性。仿真结果表明，光纤SI的传输光谱会随温度变化而移动，这是因为充醇光纤的双折射在不同温度下会发生变化。温度灵敏度由温度与谐振波长的拟合线得出。在45°C至75°C范围内，平均灵敏度可达16.55 nm/°C。这种设计的光纤温度传感器具有结构简单、灵敏度高的优点。它可用于复杂环境中的温度检测。
