In this present work, a novel structure of octagonal cladding with two elliptical air holes based on photonic crystal fiber (O-PCF) has been presented for the application of different types of communication areas within the terahertz (THz) wave propagation. There are five layers of octagonal design shape of circular air holes in cladding region with elliptical design shape of two air holes in core area has been reported in this research work. This O-PCF fiber has been investigated by the perfectly matched layers with the finite element method. After the simulation process, our proposed O-PCF fiber shows a low effective material loss of 0.0162 cm⁻¹, the larger effective area of 5.88 × 10–8 m2, the core power fraction of 80%, the scattering loss of 1.22 × 10^–10 dB/km, and the confinement loss of 3.33 × 10^–14 dB/m at the controlling region of 1 terahertz (THz). Due to its excellent characteristics, this proposed O-PCF fiber gives proficient transmission of broadband terahertz waves of signals. Moreover, for different kinds of optical communication applications and biomedical signals, our suggested O-PCF fiber will be highly perfect in the terahertz (THz) regions.

在目前的工作中，提出了一种基于光子晶体光纤 (O-PCF) 的具有两个椭圆形气孔的八边形包层的新型结构，用于太赫兹 (THz) 波传播内不同类型的通信区域的应用。本研究报道了包层区有五层八角形设计的圆形气孔，核心区有两个气孔的椭圆形设计。这种 O-PCF 纤维已经通过完美匹配层和有限元方法进行了研究。经过模拟过程，我们提出的 O-PCF 光纤显示出 0.0162 cm ^-1的低有效材料损耗，5.88 × 10–8 m2 的较大有效面积，80% 的纤芯功率分数，1.22 × 10 的散射损耗^–10 dB/km，以及 1 太赫兹 (THz) 控制区域的限制损耗为 3.33 × 10 ^–14 dB/m。由于其优异的特性，这种提议的 O-PCF 光纤可以熟练传输宽带太赫兹波信号。此外，对于不同类型的光通信应用和生物医学信号，我们建议的 O-PCF 光纤在太赫兹 (THz) 区域将非常完美。