Effect of material third-order frequency dispersion on pulse distortions in an optical fiber

Abstract

Currently, fiber-optic communication becomes increasingly important in the industry. However, to ensure high data rates it is crucial to overcome the negative effects of material dispersion caused by the dependence of the phase velocity of a wave on its frequency. Phase dispersion in optics causes the spatial separation of a light pulse into components with different group delay. In our studies we applied an approach that allowed to model the propagation of an optical pulse throughout the fiber by an equivalent linear system with frequency dispersion and its associated frequency and impulse responses. Paper presents the findings of the research into the effect of changing dispersion parameters on optical pulse distortions by increasing the length of the fiber with the third-order and the second-order material dispersion.