Designing of Index-Guiding Photonic Crystal Fibre by Finite Element Method Simulation

Different structures of Index-guiding Photonic crystal fibre are designed. The attractive vectorial Finite Element Method simulation technique is used to analyse such PCFs by taking suitable fibre parameter i.e. air hole diameter (d), pitch (Λ) and air core diameter (d´). Few important properties such as variation of refractive index with wavelength and nice confinement modal field pattern were studied. Index-guided photonic crystal fibre having inner core of radius 0.2µm, pitch 2.4μm and identical air hole of diameter d=1.38μm is suggested for which leakage of signal is almost zero at wavelength 1.55μm.