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.
In the study there was carried out the analysis of the daily dynamics of the TEC, the intensity of variations changes and seasonally analysis of TEC variations for Yoshkar-Ola and Irkutsk, according to 2012.
It is carried out the analysis of number of solar flares changein the work and their impact on the intensity changes of TEC variations for Yoshkar-Ola city according to the 2012 and 2015 years.
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