We present the modeling of a porous core dispersion flatten photonic crystal fiber (PCF) for the fruitful transmission of THz signals. The model comprises only rectangular holes in both core and cladding areas. The model is numerically studied through simulation employing the finite element method (FEM)-based software. Simulation results disclose an insignificant amount of confinement loss (CL) of 8.01 × 10^–5 cm⁻¹ at 1.1 THz in the x-polarization mode. Besides, the effective material loss (EML) is only 2.2 × 10^–3 cm⁻¹ at the point. These values ensure a negligible amount of losses present at the modeled waveguide. The model offers a high numerical aperture. The power fraction for this model is 45% in the x-polarization mode at 1.1 THz. One of the splendid properties of the presented model is the ultra-flatten dispersion of approximately ± 0.004 ps/THz/cm, which ensures an insignificant amount of pulse broadening while applying this model in communication fields. The simple structure involving rectangles as well as desired values for optical parameters enhance the fruitfulness and fabrication feasibility of the presented THz waveguide. Thereby, the proposed sensor offers compound features, for instance, low CL, low EML, high NA, high power fraction, and flatten dispersion simultaneously.

我们提出了多孔芯色散平坦光子晶体光纤 (PCF) 的建模，用于有效传输太赫兹信号。该模型在纤芯和包层区域仅包含矩形孔。该模型通过使用基于有限元法 (FEM) 的软件的模拟进行数值研究。模拟结果揭示了在x极化模式下在 1.1 THz下的 8.01 × 10 ^–5  cm ^-1的微不足道的限制损耗 (CL) 。此外，该点的有效材料损耗（EML）仅为 2.2 × 10 ^–3  cm ^-1。这些值确保建模波导中存在的损耗量可以忽略不计。该模型提供高数值孔径。该模型的功率分数为 45%x极化模式在 1.1 THz。所提出模型的出色特性之一是大约 ± 0.004 ps/THz/cm 的超平坦色散，这确保了将该模型应用于通信领域时的脉冲展宽量微不足道。涉及矩形的简单结构以及光学参数的期望值增强了所提出的太赫兹波导的成果和制造可行性。因此，所提出的传感器同时提供了复合特征，例如低 CL、低 EML、高 NA、高功率分数和平坦色散。