Design of near zero ultra flattened chromatic dispersion holey fiber for tele communication application

This paper presents dispersion flattened holey optical fiber (DF-HF) for tailoring nearly zero ultra flattened dispersion of 0.65 ps/nm/km and low confinement losses of the order less than 10^-5 dB/km for 1.25-1.60 μm (350 nm bandwith) wavelength range. The finite-element method with perfectly matched layers (PML) boundary condition is used to investigate the guiding properties. It has been shown theoretically that it is possible to obtain nearly zero ultraflattened dispersion of 0.65 ps/nm/km in a wavelength range of 1.25 to 1.60 μm with low confinement losses of the order less than 10^-5 dB/km within the entire band of interest from a five-ring HF.