Periodic interactions between solitons and dispersive waves during the generation of non-coherent supercontinuum radiation.
Periodic interactions between solitons and dispersive waves during the generation of non-coherent supercontinuum radiation.
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DOI：
10.1364/oe.20.006316
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发表时间：
2012-03
期刊：
影响因子：
3.8
通讯作者：
Chu Liu;E. Rees;T. Laurila;S. Jian;C. Kaminski
中科院分区：
文献类型：
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作者：
Chu Liu;E. Rees;T. Laurila;S. Jian;C. Kaminski
数值研究了皮秒激光脉冲泵浦光子晶体光纤产生超连续谱过程中色散波与孤子之间的相互作用。我们展示了孤子诱导的捕获势如何沿光纤沿着演化并影响DW孤子对的动力学。DW的各个频率分量周期性地与孤子相互作用，导致阶梯式的频率蓝移。相反，DW中所有频率分量的总体蓝移似乎是准连续的。频率上转换的步长和随后的孤子-DW相互作用之间的时间间隔由限制孤子-DW对并且随时间变化的势阱控制。
We present a numerical study of interactions between dispersive waves (DWs) and solitons during supercontinuum generation in photonic crystal fibers pumped with picosecond laser pulses. We show how the soliton-induced trapping potential evolves along the fiber and affects the dynamics of a DW-soliton pair. Individual frequency components of the DW periodically interact with the soliton resulting in stepwise frequency blue shifts. In contrast, the ensemble blue shifts of all frequency components in the DW appear to be quasi-continuous. The step size of frequency up-conversion and the temporal separation between subsequent soliton-DW interactions are governed by the potential well which confines the soliton-DW pair and which changes in time.