三阶孤子在EDFA中的传输特性

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 Transmission Characteristics of Third-Order Soliton in EDFA

The transmission characteristics of third-order soliton are studied numerically.The results show that when third-order soliton is transmitted in non-gain medium the pulses’ periodic changes of split and combination will occur;when transmitted in EDFA the split and combination will occur once,afterward the split two pulses will never be combined and produce new sub-pulses,and the sub-pulses will continue the transmission though split and combination;in the effect of third-order soliton,soliton pulses also will split and combination once,afterward the left delay pulses will split and produce small sub-pulses;when initial chirps are introduced into third-order soliton the small sub-pulses induced due to third-order dispersion will not be produced.