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Flex multimode neural network for complete optical computation

delete2025-05-01
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Zeyu Deng
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Zhangqi Dang
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Ziyang Zhang *
DOI:10.1016/j.isci.2025.112376delete
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摘要

摘要

En 中文
紧凑高效的光子集成电路(PICs)是解决现代计算挑战的有前景的途径。采用级联马赫-曾德尔干涉仪(MZIs)或微环谐振器(MRRs)的传统PICs局限于刚性的线性矩阵运算,需要电子学进行数据压缩、非线性激活和后处理。对电子处理的依赖抵消了光子学带来的优势。这里我们提出了一种解决该问题的光子芯片。其思路是在多模波导上施加两组电极:一组用于数据加载,另一组通过灵活操控多模光干涉来塑造神经网络。在遵循遗传算法的塑造过程中,再次采用光学计算以绕过梯度获取问题。一旦训练完成,该芯片完全在光域进行计算。实验上在Iris数据集上实现了91%的分类精度。我们的方法可能使PICs更接近无需电子过载的实用计算应用。
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