All-optical modulation based on the photothermal effect of two-dimensional (2D) materials shows great promise for all-optical signal processing and communication. In this work, an all-optical modulator with a 2D PtSe2-on-silicon structure based on a microring resonator is proposed and demonstrated utilizing the photothermal effect of PtSe2. A tuning efficiency of 0.0040 nm · mW−1 is achieved, and the 10%–90% rise and decay times are 304 μs and 284 μs, respectively. The fabricated device exhibits a long-term air stability of more than 3 months. The experimental results prove that 2D PtSe2 has great potential for optical modulation on a silicon photonic platform.

中文翻译：

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具有超高稳定性的全光 PtSe₂ 硅光子调制器

基于二维 (2D) 材料光热效应的全光调制在全光信号处理和通信方面显示出巨大的前景。在这项工作中，利用 PtSe2 的光热效应提出并演示了一种基于微环谐振器的具有 2D PtSe2 硅上结构的全光调制器。实现了 0.0040 nm · mW-1 的调谐效率，10%–90% 的上升和衰减时间分别为 304 μs 和 284 μs。制造的设备表现出超过 3 个月的长期空气稳定性。实验结果证明，二维 PtSe2 在硅光子平台上具有巨大的光调制潜力。