Eftekhar M A, Wright L G, Mills M S, Kolesik M, Correa R Amezcua, Wise F W, Christodoulides D N
Opt Express. 2017 Apr 17;25(8):9078-9087. doi: 10.1364/OE.25.009078.
We demonstrate that the pump's spatial input profile can provide additional degrees of freedom in tailoring at will the nonlinear dynamics and the ensuing spectral content of supercontinuum generation in highly multimoded optical fibers. Experiments and simulations carried out at 1550 nm indicate that the modal composition of the input beam can substantially alter the soliton fission process as well as the resulting Raman and dispersive wave generation that eventually lead to supercontinuum in such a multimode environment. Given the multitude of conceivable initial conditions, our results suggest that it is possible to pre-engineer the supercontinuum spectral content in a versatile manner.
我们证明，泵浦的空间输入分布可以在高度多模光纤中为随意定制超连续谱产生的非线性动力学及随之产生的光谱内容提供额外的自由度。在1550纳米处进行的实验和模拟表明，输入光束的模式组成可以显著改变孤子裂变过程以及最终在这种多模环境中产生超连续谱的拉曼和色散波的产生。考虑到众多可想象的初始条件，我们的结果表明，以一种通用的方式预先设计超连续谱的光谱内容是可能的。
