Demonstration of Two Zero Dispersion Wavelengths in Highly Birefringence Nonlinear Photonic Crystal Fibers

A novel of photonic crystal fiber (PCF) is proposed which is composed of a central defect core and cladding with elliptical air-holes along the fiber length. And two circle air-holes is enlarged in the near to central region to reduce core size and induce higher nonlinear. Its dispersion, birefringence and nonlinearity coefficient are investigated simultaneously by using the full vectorial finite element method. Numerical results indicate that the proposed fiber has two zero dispersion wavelengths (ZDWs) and high birefringence high nonlinear effects, which will have important application in four-wave mixing and higher-order dispersion effects.