In this study, a simple hollow core hexagonal structured photonic crystal fiber is offered and analyzed to discern commonly used different type of alcohols in our daily life. The proposed sensor guiding properties are numerically investigated using a full vectorial finite element software-based scheme. To ensure higher accuracy, the properties of alcohols (refractive index and dielectric constant) at different wavelength are used to calculate the behaviour of the sensor. The simulation results ensure that extremely high relative sensitivity around 89% can be achieved from the sensor at optimum structural condition. In addition, other important propagation parameters such as confinement loss (CL), single-mode propagation spot size, numerical aperture, etc., are discussed in detail for various geometric conditions. The structure of that sensor is straightforward, and available commercial fabrication technology can be used to fabricate it without any complexity.

在这项研究中，提供并分析了一种简单的空心六边形结构光子晶体光纤，以识别我们日常生活中常用的不同类型的酒精。使用基于全矢量有限元软件的方案对所提出的传感器引导特性进行了数值研究。为确保更高的精度，使用不同波长下醇的特性（折射率和介电常数）来计算传感器的行为。仿真结果确保传感器在最佳结构条件下可以达到 89% 左右的极高相对灵敏度。此外，还针对各种几何条件详细讨论了其他重要的传播参数，例如限制损耗 (CL)、单模传播光斑尺寸、数值孔径等。