An extensible framework is proposed for on-chip spatial-mode manipulations based on metamaterial building blocks, which enables the excitation of arbitrarily high-order spatial modes in silicon waveguides. It makes a significant step towards the comprehensive and on-chip manipulations of spatial lights, and may provide promising opportunities for complex photonic functionalities.

中文翻译：

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基于超材料的可扩展片上模式操作

提出了一种可扩展的框架，用于基于超材料构建块的片上空间模式操作，该框架能够在硅波导中激发任意高阶空间模式。它朝着空间光的全面和片上操作迈出了重要一步，并可能为复杂的光子功能提供有希望的机会。