文章提出一种新型低损耗太赫兹波塑料光子晶体光纤(THz-PPCF)结构，其包层是由两种直径不同的空气孔周期性排列而成。利用时域有限差分法(FDTD)对其色散特性进行了分析。结果表明，通过调节包层中两种空气孔的直径以及晶格常数，可以得到低损耗、超平坦趋于零色散的太赫兹波塑料光子晶体光纤。

This paper proposes a new type of THz composite Plastic Photonic Crystal Fiber (THz-PPCF), the cladding of which consists of two kinds of periodically lined air holes with different diameters, and analyzes its dispersion properties by using the Finite-Difference Time-Domain (FDTD) method. The results show that a low-loss super-flattened dispersion THz-PPCF can be achieved by optimizing the air hole diameters and the lattice constant.