A newfangled octagonal-shaped porous-core
photonic crystal fiber (PCF) with hexagonal cladding is
suggested for extraordinarily low loss THz wave
propagation. The TOPAS based proposed fiber has
achieved nearly inconsiderable bending loss of 6. 5 ×
, ultra-small confinement loss of 5. 84 ×
10−5 dB/cm and a flat material loss of 0.057 cm−1
THz operating frequency. Further study includes a
high-power fraction of core which is about 42% with
optimal design parameters. Finite element method
(FEM) and circular perfectly matched layer (PML)
boundary conditions were used for the characterization
of the suggested PCF. The proposed fiber can be used
for functional broadband THz communication and low
loss application with fabrication feasibility.
Keywords : Finite Element Method, Bending Loss, Effective Material Loss, Terahertz Guidance, Confinement Loss, Photonic Crystal Fiber.