Highly birefringent slotted core photonic crystal fiber for terahertz waveguiding

A novel porous core photonic crystal fiber (PC-PCF) is suggested and analyzed for terahertz waveguiding. The PC-PCF has a TOPAS background material with suspended asymmetric slotted core. Therefore, high birefringence of 0.09 is achieved with small material absorption losses of 0.016 cm(-1) and 0.028 cm(-1) for the quasi transverse electric (TE) and quasi transverse magnetic (TM) modes, respectively at f = 1.5 THz. Additionally low bending losses of 2.63 x 10(-24) cm(-1) and 8.16 x 10(-36) cm(-1) are obtained for the quasi TE and quasi TM modes, respectively at 1.0 cm bending radius and f = 1.5 THz. Further, the PC-PCF has an ultra-flat low dispersion of 0.54 +/- 0.08 ps/THz/cm and 0.94 +/- 0.1 ps/THz/cm for the quasi TE and TM modes, respectively within the frequency range of 0.8-1.2 THz. Therefore, the reported SSCPCF has a strong potential for usage in the Terahertz regime.

Automated summary

The novel PC-PCF proposed in this study shows high birefringence and low losses, making it a promising candidate for terahertz waveguiding applications.