Design of ultra-low and ultra-flattened dispersion single mode photonic crystal fiber by Differential Evolution algorithm

In this paper, Differential Evolution (DE) algorithm is applied to design photonic crystal fibers structure with desired properties over the C communication band. In order to determine the effective index of propagation of mode and then, the other properties of structure, Finite Difference Frequency Domain (FDFD) solver is used. The results revealed that the proposed method is a powerful tool for solving this optimization problem. The optimized PCF exhibits a very low dispersion with a nearly zero dispersion slope over the C communication band.