Design optimization of a highly birefringent and highly nonlinear silicon photonic crystal fiber

Abstract

This paper presents an optimum design for highly birefringent and highly nonlinear photonic crystal fiber based on modified spiral photonic crystal fiber structure. The PCF structure includes an elliptical slot in the core of the fiber. The finite element method is used to investigate the guiding property. The simulation results show that nonlinear coefficient at 1.55 μm wavelength for X and Y polarization is 2951 and 1379, respectively. This design also offers high birefringence up to 0.292219 at 1550 nm wavelength. In addition to this, confinement factor is also reported and discussed.