Design of Porous Core Fiber for Terahertz Regime using Zeonex

Abstract

We established a novel Zeonex single-mode, porous core fiber for guiding THz waves. Full-vector FEM with layer boundary conditions that are perfectly matched has been used to investigate in addition to the wave guiding characteristics, birefringence, core power fraction, dispersion, confinement loss, effective material loss and the fibers' modality-effective surface area. A cyclo-olefin polymer (COP) based material, trade name Zeonex, was used for its special advantages as background material such as lower specific gravity, chemical resistance at lifted temperature, higher straightforwardness, lower melt flow index etc. over other materials. The loss count that we got was very low as EML is 0.03 cm^−1and confinement loss is less than 10⁷. Higher birefringence and flattened dispersion also have been achieved for this design. The Porous core fiber can be manufactured using existing fabrication technology and can be used in many applications at a negligible absorption loss within the terahertz frequency range.