Abstract
In the present investigation we have proposed a solid core photonic crystal fiber (PCF) with octagonal ring structured cladding. In order to compare, two cases has been obtained with different air filling ratio and filled with high refractive index material. Different optical parameters of the photonic crystal fiber like effective area, Nonlinear Coefficient, Confinement Loss and Dispersion has been studied. The two cases have been designed to meet the requirements like large mode area(LMA), highly nonlinear fiber, low confinement loss etc. To analyse such PCF properties are reported by using the full vector finite element method (FEM) with the help of software like COMSOL MULTIPHYSICS and MATLAB. It was possible to obtain large mode area (LMA) by filling the inner most ring with high refractive index material without changing the structure.
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