Low Confinement Loss Photonic Crystal Fiber (PCF) With Flat Dispersion over C-Band

A new structure of low confinement loss with flat dispersion PCF over C-band is proposed and analysed by full vector finite element method. A solid core PCF has been designed with circular air-holes of different diameters and the background index are calculated from Sellmeier equation. From the results it is confirmed that the proposed design finds application in communication with its extremely low confinement loss and flat dispersion over the Cband. Within the wavelength band 1. 5 μm to 1. 6 μm the fast axis mode vanishes leaving single polarization.