In this work we numerically analyze a photonic unconventional accelerator based on the four-wave mixing effect in highly nonlinear waveguides. The proposed scheme can act as a fully analogue system for nonlinear signal processing directly in the optical domain. By exploiting the rich Kerr-induced nonlinearities, multiple nonlinear transformations of an input signal can be generated and used for solving complex nonlinear tasks. We first evaluate the performance of our scheme in the Santa-Fe chaotic time-series prediction. The true power of this processor is revealed in the all-optical nonlinearity compensation in an optical communication scenario where we provide results superior to those offered by strong machine learning algorithms with reduced power consumption and computational complexity. Finally, we showcase how the FWM module can be used as a reconfigurable nonlinear activation module being capable of reproducing characteristic functions such as sigmoid or rectified linear unit.

该研究论文通过对高度非线性波导中的四波混频效应进行数值分析，提出了一种基于光学领域中的非线性信号处理的新型光子加速器。该方案利用富含Kerr诱导的非线性效应，可以生成多种非线性变换来解决复杂的非线性任务，并在光通信场景中实现了全光非线性补偿，提供了比强大的机器学习算法更优秀的结果，并且功耗和计算复杂度减少。最后，展示了如何将四波混频模块用作可重构非线性激活模块，能够重现S型或整流线性单元等特征函数。

基于高非线性波导的四波混频非常规计算