Large negative dispersion with residual dispersion (Dr) compensation over E+S+C+L+U wavelength bands by using single mode hexagonal Photonic crystal fiber (H-PCF)

In transmission media the Photonic crystal fibers (PCFs) are highly suitable for wavelength-division-multiplexing (WDM) systems. This paper exhibit a Hexagonal Photonic Crystal Fiber (H-PCF) that mention simultaneously high birefringence, large nonlinearity and high negative dispersion. The proposed H-PCFs shows a large negative dispersion coefficient of about -188 to -435 ps/(nm.km) over E and U-bands along with relative dispersion slope (RDS) perfectly matched to that of single mode fiber of about 0.0036 nm-1. Besides according to simulation, the birefringence of the desired designed is 1.27×10-2 with the large nonlinear coefficient is 51.54W-1Km-1 at the operating wavelength of 1550 nm.