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 × 10–24 cm−1 and 8.16 × 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 $$\pm$$ 0.08 ps/THz/cm and 0.94 $$\pm 0.1{ }$$ 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.

中文翻译：

---

用于太赫兹波导的高双折射开槽芯光子晶体光纤

建议并分析了一种用于太赫兹波导的新型多孔芯光子晶体光纤 (PC-PCF)。PC-PCF 具有 TOPAS 背景材料，带有悬浮的非对称开槽核心。因此，对于准横向电 (TE) 和准横向磁 (TM) 模式，在 f = 1.5 THz 时，分别以 0.016 cm-1 和 0.028 cm-1 的小材料吸收损耗实现了 0.09 的高双折射。此外，准 TE 和准 TM 模式分别在 1.0 cm 弯曲半径和 f = 1.5 THz 下获得了 2.63 × 10-24 cm-1 和 8.16 × 10-36 cm-1 的低弯曲损耗。此外，对于准 TE 和 TM 模式，PC-PCF 具有 0.54 $$\pm$$ 0.08 ps/THz/cm 和 0.94 $$\pm 0.1{ }$$ ps/THz/cm 的超平坦低色散，分别在 0.8-1.2 THz 的频率范围内。所以，