Guiding properties of a hybrid core porous fiber (HCPF) for terahertz wave propagation

This paper presents the guiding properties of a porous core photonic crystal fiber for Terahertz (THz) wave propagation. The reported porous core fiber has a hybrid (triangular + circular) air hole arrangement at the core region with hexagonal cladding. Simulation results show a low EML of 0.425 dB/cm at 0.7 THz frequency with negligible (< 10−2 dB/cm) confinement and bending losses for the proposed porous fiber. Numerical results also show a 0.46 THz band of near zero flat dispersion at 0.9±0.05 ps/THz/cm. Changes in the guiding properties for tuning the design parameters of the core region of the hybrid core porous fiber (HCPF) are reported elaborately in this paper.