High pressurized Xenon gas-filled hollow core Kagome photonic crystal fiber for transmission of THz waves

A novel hollow core Kagome lattice photonic crystal fiber(PCF) has been designed and analyzed for terahertz (THz) wave guidance by pumping Xenon (Xe) gas inside the hollow core of the PCF. Using finite element method (FEM), optical properties have been simulated and optimized with different strut width of Kagome lattice PCF. In addition, those properties have been optimized by changing Xe-gas pressure inside the hollow core in the THz regime from 1 to 10 THz. Simulation results show tightly mode field confinement of light through the hollow core for single mode operation within the band of frequency and the lowest EML of 5.18E-5 dB/cm has been found in operating frequency of 10 THz for strut width of 5 μm and the core diameter of 800 μm with constant pressure at 1000 bar. These losses have been further reduced up to 20% i.e. 4.16E-5 dB/cm, by increasing the pressure of Xe-gas to 3000 bar. Findings of this paper can help to make extremely low loss THz waveguide for potential beneficial biomedical applications.