A highly nonlinear and birefringent photonic crystal fiber with zero dispersion at 2 µm eye-safe spectral window

Abstract

A novel highly nonlinear and birefringent photonic crystal fiber with zero dispersion at 2 m eye-safe spectral window is proposed in this paper. By using the full-vector finite-element method, the key propagation characteristics of the designed PCF are investigated at 2 m eye-safe spectral window. Furthermore, a more effective and accurate method has been used to optimize the two small air holes diameters of and the ratio of at the wavelength of 2 m. When the parameters of and d/ are 0.2 m and 0.91, the birefringence, nonlinearity and confinement loss can reach to an order of , 25.32 , and 0.044 dB/m, respectively. The zero-dispersion coefficient of the designed PCF can be achieved at the wavelength of 2 m.