DefinePK

Abstract

In this paper we presented a dual core Octagonal shape Photonic Crystal Fiber to achieve a high negative dispersion coefficient of -1650 ps/ns/km at a communication wavelength 1550nm. The effect of structural parameters on birefringence, dispersion and the coupling length of designed fiber is analyzed using coupling mode theory and the full-vector finite element method (FEM). In the cladding region, the air hole diameter is reduced to achieve a high negative dispersion coefficient. This design support single- endless transmission over a wide wavelength range of 1350-1750nm including S, C, L bands of communication system. This dual core PCF design achieved a short coupling length in the range of (32-36) µm and a birefringence value in the order of 10-3 is also observed.