Zeonex based decagonal photonic crystal fiber (D-PCF) in the terahertz (THz) band for chemical sensing applications
Shuvo Sen, Md. Abdullah-Al-Shafi, Abu Sayed Sikder, Md. Selim Hossain, Mir Mohammad Azad
Abstract
In this research work, we have proposed an excellent work combination of five layers spherical shape in cladding area with two layers of same circular shape in rotated-hexa core based decagonal photonic crystal fiber (D-PCF) and explicated the simulation outcomes for chemicals finding in the terahertz (THz) ranges. The finite element method (FEM) and perfectly matched layers (PML) boundary complaint based on COMSOL Multiphysics has been cast off to design this structure with proper numerical parameters. After the numerical analysis, this fiber shows the high relative sensitivity are 78.56%, 79.76% and 77.51% and low confinement losses are 5.80 × 10−08, 6.02 × 10−08 dB/m and 5.74 × 10−08 dB/m for three chemicals such as Ethanol (n = 1.354), Benzene (n = 1.366) and Water (n = 1.330), respectively at monitoring region of 1 THz. Moreover, other optical properties such as effective mode index (EMI), effective area (EI), the total power fraction (TPF) are highly deliberated with their necessary graphical results. So, it is clearly seen that our suggested decagonal photonic crystal fiber (D-PCF) will be more appropriate in industrial areas and bio-medicine areas for chemical sensors especially, gas sensors to find potential applications in hospitals, industries and also for environmental monitoring.