Poli F, Foroni M, Bottacini M, Fuochi M, Burani N, Rosa L, Cucinotta A, Selleri S
Information Engineering Department, University of Parma, Parco Area delle Scienze 181/A, 43100 Parma, Italy.
J Opt Soc Am A Opt Image Sci Vis. 2005 Aug;22(8):1655-61. doi: 10.1364/josaa.22.001655.
The modal cutoff of square-lattice photonic crystal fibers with a finite number of air-hole rings has been accurately investigated to our knowledge for the first time. By analyzing the leaky behavior of the second-order mode, we have obtained a phase diagram that describes the regions of single-mode and multimode operation as well as the endlessly single-mode regime. Furthermore, starting from these results, we have obtained the cutoff normalized frequency according to two different formulations of the V parameter previously adopted for fibers with a triangular lattice. A final comparison of the cutoff properties of fibers characterized by a square lattice and a triangular lattice has been carried out.
据我们所知，首次对具有有限数量气孔环的方形晶格光子晶体光纤的模态截止进行了精确研究。通过分析二阶模的泄漏行为，我们得到了一个相图，该相图描述了单模和多模工作区域以及无限单模状态。此外，从这些结果出发，我们根据先前用于三角形晶格光纤的V参数的两种不同公式，得到了截止归一化频率。最后对以方形晶格和三角形晶格为特征的光纤的截止特性进行了比较。
