Ultra-flattened dispersion photonic crystal fiber with low confinement loss

The optical communication systems need a waveguide with low confinement loss and low dispersion. A conventional fiber optic is widely used in these systems. As an alternative, a photonic crystal fiber (PCF) can be used. It is highly suitable transmission media for optical communication systems. Low confinement loss, large effective area in a wide range of wavelengths, and ultra-flattened dispersion of PCFs is extremely desirable. In this paper, we design and simulate a new structure of dispersion flattened photonic crystal fiber (DF-PCF). Also, we investigate the tolerance analysis of the PCF deformations including tolerances of the pitch size and outer air holes diameter.