Numerical analysis of photonic crystal fiber of ultra-high birefringence and high nonlinearity.

A numerical analysis of a hexagonal PCF structure with four circular air hole rings around the core has been presented in this paper. By utilizing a full vectorial finite element method with perfectly matched layers, propagation properties such as birefringence, chromatic dispersion and confinement losses are numericaly evaluated for the proposed PCF structure. Specifically, birefringence of 2.018 × 10-2, nonlinear coefficients of 40.682 W-1 km-1, negative chromatic dispersion of - 47.72 ps/km.nm at 1.55 µm and - 21 to - 105 ps/km.nm at the telecommunication band of C-U have been reported.