In this paper a highly polarization maintaining
birefringent photonic crystal fiber at telecommunication
window is reported via Full-Vectorial Finite Element Method
(FV-FEM). By taking triangular lattice of three ring
hexagonal structure PCF with suitable designing parameters
such as symmetrical elliptical hole along radial axis of
ellipticity a/b=5μm, air hole diameter d=1μm and pitch
Λ=2.3μm, high birefringence (2.437×10-3) with small effective
mode area(9.47μm2) and beat length (0.64cm) are found at
wavelength 1.55μm.
