Abstract
In this study, photonic crystal fiber in quasi pattern (Q-PCF) has been proposed at the terahertz (THz) regime. In Q-PCF, the core area is designed using the two elliptical air holes for the best performance of optical communications to obtain the ultra-low effective material loss (EML). In Q-PCF, perfectly matched layer (PML) and the finite element method (FEM) have been applied to simulate the desired outcomes. The mentioned Q-PCF is optimized by shifting the core diameter, cladding air holes pitch and diameter, porosity of the model, and background materials. The numerically controlled outcomes ensure an EML of 0.01542 cm−1 with high power fraction response at 1 THz frequency. In addition, other loss profiles and operating modes have also been well described. Moreover, operating mode profile indicates single mode propagation up to 2.2 THz operating frequency. The noted outcomes ensure that the designed structure will be perfectly suitable for long distance broadband optical communication applications in THz technology.
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