Design and Characterization of low loss Single Mode Fiber for Terahertz Signal Transmission

Abstract

In this paper, Zeonex based hexagonal photonic crystal fiber (PCF) is proposed to obtain low confinement loss and moderate effective material loss (EML) at terahertz frequency. We use the finite element method (FEM) with a perfectly matched layer (PML) boundary condition to investigate the modal properties of the PCF. Simulated results demonstrate that this structure transfers signal in single mode condition. Besides, excessive low confinement loss of 6.73×10-11 dB/cm, and EML of 0.1491 dB/cm have obtained at an operating frequency of 0.55 THz. In this paper, other crucial guiding parameters such as air-core power fraction, effective area, bending loss, and dispersion of the fiber have also discussed. This terahertz fiber can be a good candidate for several applications in the terahertz regime.