Role of positive and negative third order dispersion (TOD) on soliton interaction in 160Gbps telecommunication system

TLDR: In this article, the influence of positive and negative third order dispersion (TOD) on soliton interaction has been analyzed, which has resulted in perfect collision in 160Gbps system at the interaction point, Ip = 2202.6Km within one collision period of Lcoll = 4405.

Abstract: In this paper, we analyze the influence of positive and negative third order dispersion (TOD) on soliton interaction. The peculiar nature of soliton as massive particle results in interaction of in-phase soliton, which has resulted in perfect collision in 160Gbps system at the interaction point, Ip = 2202.6Km within one collision period of Lcoll = 4405.2Km. The TOD normally helps in soliton shift from its initial position. We demonstrate how this shifting of TOD helps in preventing the interaction at 2202.6Km with an initial relative spacing and pulse width of in-phase soliton qo = 5.28 and 1.77ps, respectively. As the TOD has its influence near zero dispersion point of fiber, we choose the dispersion parameter of fiber as β2 = 0.22ps2/Km. On considering the positive and negative TOD, the interaction was prevented at Ip, which is characterized in terms of Q-value in a single channel telecommunication system. It is seen that for positive TOD with the values of β3 = 0.05 and 0.07ps3/Km, the system yielded the Q-value of 88.33 and 54.81, respectively, while for negative TOD with the values of β3 = −0.05 and β − 0.07ps3/Km, the Q was 84.47 and 38.25, respectively.