Dispersion compensating photonic crystal fiber for telecommunication band with a dispersion compensation over 300 nm bandwidth

In this paper a hybrid photonic crystal fiber based on a hybrid design in the fiber cladding region with a combination of hexagonal and circular structures is proposed. The method applied is full-vector finite element method (FEM). The proposed microstructure optical fiber offers broadband dispersion compensation from 1200 nm to 1500 nm i.e. 300 nm wavelength where negative dispersion coefficient is - 58ps/(nm.km) with an absolute dispersion variation of only 0.5ps/(nm.km). Results show that, this proposed DCF with modest number of design parameters can be considered as a good candidate for dispersion compensating application in WDM system. To check the dispersion accuracy, sensitivity of the fiber dispersion properties to a ±1 to ±2% variation in the optimum parameters is studied for practical conditions.