论文部分内容阅读
提出一种新型的高双折射双芯光子晶体光纤(PCF)模型,通过将最内层8个空气孔替换为4个椭圆空气孔来增大光纤的结构不对称性;通过改变两纤芯间的空气孔大小、椭圆空气孔的椭圆度以及孔间距来分析光子晶体光纤的双折射度、耦合长度以及色散特性。结果表明,双芯光子晶体光纤的模式双折射度达到10-2量级,耦合长度达0.1367mm,在1.0～1.6μm波长范围内具有超平坦色散特性。
A new high-birefringence dual-core photonic crystal fiber (PCF) model is proposed to increase the fiber structure asymmetry by replacing the innermost eight air holes with four elliptical air holes. By changing the inter- The size of the air hole, the ellipticity of the elliptical air hole and the hole spacing to analyze the birefringence, the coupling length and the dispersion characteristics of the photonic crystal fiber. The results show that the birefringence of the dual-core photonic crystal fiber reaches the order of 10-2, the coupling length is 0.1367mm, and the ultra-flat dispersion characteristic is in the range of 1.0 ~ 1.6μm.