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对三阶孤子传输特性进行了数值研究,研究表明:三阶孤子在无增益光纤中传输时,脉冲会发生分裂、重合的周期性变化;在EDFA中传输时会有一次分裂和重合发生,之后分裂的两脉冲将不再重合,且产生新的子脉冲,子脉冲将会继续分裂、重合的传输下去;在三阶色散的影响下,孤子脉冲也会有一次分裂和重合,之后左边延迟脉冲会发生分裂,并产生小子脉冲;当对三阶孤子引入初始啁啾后,三阶色散引起的小子脉冲将不会产生。
The numerical studies of the third-order soliton transmission are carried out. The results show that when the third-order soliton propagates in the gainless fiber, the pulsation will occur periodic changes of splitting and coincidence. In EDFA, there will be one splitting and coincidence when transmitting. Split the two pulses will no longer coincide, and the new sub-pulse, the sub-pulse will continue to splitting, coincidence transmission down; under the influence of third-order dispersion, the soliton pulse will have a split and overlap, then the left delay pulse Splitting occurs and a kiddie pulse is generated; when an initial chirp is introduced into a third-order soliton, the kidneys due to the third-order dispersion will not be generated.