Efficient way for detection of alcohols using hollow core photonic crystal fiber sensor.

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. [ABSTRACT FROM AUTHOR]