We introduce a new, to the best of our knowledge, type of band-limited optical pulse—soliton-sinc tailored to the nonlinear Schrödinger (NLS) equation. The idea behind the soliton-sinc pulse is to combine, even if approximately, a property of a fundamental soliton to propagate without distortions in nonlinear systems governed by the NLS equation with a compact band-limited spectrum of a Nyquist pulse. Though the shape preserving propagation feature is not exact, such soliton-sinc pulses are more robust against nonlinear signal distortions compared to a Nyquist pulse.

中文翻译：

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孤子正弦光脉冲

据我们所知，我们引入了一种新的带限光脉冲类型-为非线性Schrödinger（NLS）方程量身定制的孤子正弦。孤子-正弦脉冲背后的想法是，即使近似地，也结合了基本孤子的特性，以便在由NLS方程控制的非线性系统中以奈奎斯特脉冲的紧凑带限频谱传播而不会产生失真。尽管形状保持传播特征不精确，但与奈奎斯特脉冲相比，此类孤子-正弦脉冲对非线性信号失真的鲁棒性更高。