Numerical analysis of dispersion properties of hetrostructured photonic crystal fibers

In this article, perfectly matched layer (PML) for the boundary treatment and an efficient compact two dimensional finite-difference frequency-domain (2-D FDFD) method were combined to model hetrostructured photonic crystal fibers (HPCF) Using this model, dispersion characteristics of first space filling mode (SFM) is numerically investigated. In the designed HSPCFs, we realize flattened dispersion in positive regions only by composing different structure for the cladding and core.