We show that a soliton in a high-order spatial mode of a multi-mode fiber can completely lose its shot-to-shot coherence due to a noise seed with energy orders of magnitude below that of the soliton. The total degradation of shot-to-shot coherence is caused by a very strong recently demonstrated intermodal nonlinear effect, soliton self-mode conversion. The results indicate that the robustness of solitons against perturbations is not entirely applicable in the presence of intermodal nonlinearities, and, more generally, that certain single-mode results cannot be trivially extrapolated to multi-mode fibers.

中文翻译：

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孤子之间连贯性的脆弱性

我们表明，由于能量密度低于孤子数量级的噪声种子，多模光纤的高阶空间模中的孤子可以完全失去其散粒相干性。镜头到镜头相干性的整体下降是由最近表现出的非常强的联模非线性效应（孤子自模转换）引起的。结果表明，在存在模态非线性的情况下，孤子对扰动的鲁棒性并不完全适用，更一般地说，某些单模结果不能简单地外推到多模光纤。