Design of highly birefringent dispersion compensating spiral photonic crystal fiber

We propose a highly birefringent dispersion compensating photonic crystal fiber (PCF) based on a defected elliptical core that successfully compensates the chromatic dispersion in operating wavelengths of 1450 to 1700 nm in communication band. The finite element method (FEM) with perfectly matched boundary layer (PML) is used as the simulation methodology. The proposed dispersion compensating fiber shows an average dispersion coefficients of -355.898 ps/nm-km with a dispersion variation of 11.8 ps/nm-km within the wavelengths of 1450-1700nm. Besides, it offers high birefringence of 0.0175 with large nonlinear coefficient of 39.9333W^-1km^-1 at the operating wavelength 1550 nm.