新型太赫兹光子晶体光纤的单模传输特性分析

发布时间：2018-05-16 20:09

本文选题：太赫兹波 + 光子晶体光纤　；参考：《光通信研究》2016年01期

【摘要】：以低损耗材料聚乙烯为基底,设计了一种新型的太赫兹光子晶体光纤,并利用全矢量有限元法对其单模截止频率、色散和损耗进行了数值模拟。结果表明,改变包层空气孔周期、空气孔直径和纤芯空气孔直径,可以调节太赫兹单模传输的频率范围。当包层空气孔周期为400μm、包层空气孔直径为100μm、纤芯空气孔直径为40μm时,不仅可以获得0.1~5THz的宽频带单模传输范围,而且在0.5~5THz频率范围内波导色散可以控制在±0.5ps/(nm·km),且模式的限制损耗随频率的增大逐渐减小,同时在2.8THz处获得最小传输损耗3.86dB/m。
[Abstract]:A novel terahertz photonic crystal fiber was designed based on low loss polyethylene and its single-mode cut-off frequency dispersion and loss were numerically simulated by full-vector finite element method. The results show that the frequency range of terahertz single mode transmission can be adjusted by changing the period of cladding air hole the diameter of air hole and the diameter of core air hole. When the cladding air hole period is 400 渭 m, the cladding air hole diameter is 100 渭 m, and the core air hole diameter is 40 渭 m, the broadband single-mode transmission range of 0.1~5THz can be obtained. Moreover, the waveguide dispersion can be controlled to 卤0.5ps/(nm KMN in the 0.5~5THz frequency range, and the mode limiting loss decreases with the increase of the frequency. At the same time, the minimum transmission loss of 3.86 dB / m is obtained at 2.8THz.
【作者单位】：兰州理工大学理学院;
【基金】：国家自然科学基金资助项目(61167005,61367007) 甘肃省自然科学基金资助项目(1112RJZA018,1112RJZA017)
【分类号】：TN253

【相似文献】