Finite element analysis of solid-core photonic crystal fiber

We have modeled a solid-core photonic crystal fiber (PCF) by using full vectorial finite element method (FEM). Modal properties of the PCF have been investigated by calculating the effective index of the supported mode. Results for effective index and the dispersion are presented. COMSOL Multiphysics software has been used to calculate the effective index of the supported mode of the fiber, both with and without including fundamental space-filling mode (FSM) layer in the fiber design. Hexagonal geometry with three ring structure is used to model the fiber; however, the present analysis can also be applied to any kind of fiber geometry.