Chalcogenide glass Photonic Crystal Fiber with flattened dispersion and high nonlinearity at telecommunication wavelength

A highly nonlinear photonic crystal fiber with eight ring octagonal structure is proposed. Chalcogenide glass of As2S3 is used as the material for this photonic crystal fiber structure. The finiteelement method with perfectly matched boundary layer is employed to analyze the guiding properties. Non linearity of 13,584.5 per W-km is obtained at 1.55 μm with reasonable flattened dispersion of -25 ps/nm-km to -28 ps/nm-km. Confinement loss achieved is of the order of 10 dB/km. Large negative dispersion is also obtained ranging from wavelength of 0.85 μm to 1.95 μm, which can be used for dispersion compensation in fiber optic communication. This Photonic Crystal Fiber structure can also be used for nonlinear applications like ultra short soliton pulse transmission, optical parametric amplification, supercontinuum generation. KeywordChalcogenide glass, Chromatic dispersion, Finite element method, Large negative dispersion, Photonic crystal fiber, Supercontinuum.