We report a broadband microwave frequency converter based on a coherent Kerr optical micro-comb generated by an integrated micro-ring resonator. The coherent micro-comb displays features that are consistent with soliton crystal dynamics with an FSR of 48.9-GHz. We use this to demonstrate a high-performance millimeter-wave local oscillator for microwave frequency conversion. We experimentally verify the microwave performance up to 40 GHz, achieving a ratio of -6.8 dB between output RF power and IF power and a spurious suppression ratio of > 43.5 dB. The experimental results show good agreement with theory and verify the effectiveness of microwave frequency converters based on coherent optical micro-combs, with the ability to achieve reduced size, complexity, and potential cost.

中文翻译：

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用于宽带微波频率转换的基于微梳的光子本振

我们报告了一种基于由集成微环谐振器产生的相干克尔光学微梳的宽带微波变频器。相干微梳显示的特征与孤子晶体动力学一致，FSR 为 48.9 GHz。我们用它来演示用于微波频率转换的高性能毫米波本地振荡器。我们通过实验验证了高达 40 GHz 的微波性能，在输出射频功率和中频功率之间实现了 -6.8 dB 的比率以及 > 43.5 dB 的杂散抑制比。实验结果与理论吻合良好，验证了基于相干光学微梳的微波频率转换器的有效性，能够降低尺寸、复杂度和潜在成本。