An investigation of the photonic crystal fiber structure with different air hole diameter.

In this study, full wave solutions are presented for a specific photonic crystal fiber (PCF) structure via the Localized Basis Function (LBF) method. The PCF structure consists of an unbounded periodic cladding and a high index core region. In the LBF method, a guided mode localized in the core region and the transverse refractive index of the PCF structure are decomposed by using Hennite-Gaussian basis functions and periodic functions. Numerical results are presented to demonstrate the variation of the modal fields in the PCF