Polarization properties of elliptical-hole square lattice photonic crystal fibers

Abstract

We explore the polarization properties of elliptical-hole square lattice photonic crystal fibers (PCFs) with elliptic fiber core based on polymer. The optical birefringence and polarization-dependent leakage loss are studied numerically based on the full-vector finite element method(FEM). Numerical results show that the proposed fiber has heightened modal birefringence of the order of 10^-2; and the leakage loss is reduced to 0.08dB/m at wavelength of 0.65μm when it has 10 rings of elliptical air-holes. So the proposed PCFs may be useful in the field of high birefringence polarization-maintaining optical communication.