Saitoh Kunimasa, Tsuchida Yukihiro, Koshiba Masanori, Mortensen Niels Asger
Opt Express. 2005 Dec 26;13(26):10833-9. doi: 10.1364/opex.13.010833.
In this paper we evaluate the cut-off properties of holey fibers (HFs) with a triangular lattice of air holes and the core formed by the removal of a single (HF1) or more air holes (HF3 and HF7). With the aid of finite-element simulations we determine the single-mode and multi-mode phases and also find the air hole diameters limiting the endlessly single-mode regime. From calculations of V and W parameters we find that in general HF1 is less susceptible to longitudinal non-uniformities compared to the other designs for equivalent effective areas. As an example we illustrate this general property for the particular case of a macro-bending induced loss.
在本文中，我们评估了具有三角形气孔晶格且通过去除单个气孔（HF1）或更多气孔（HF3和HF7）形成纤芯的多孔光纤（HF）的截止特性。借助有限元模拟，我们确定了单模和多模相位，还找到了限制无限单模状态的气孔直径。通过对V和W参数的计算，我们发现，对于等效有效面积，与其他设计相比，一般情况下HF1对纵向不均匀性的敏感度较低。作为一个例子，我们针对宏观弯曲引起的损耗这一特殊情况说明了这一普遍特性。
