Compact and integrated microwave pulse generation can benefit various applications in integrated microwave photonics. We demonstrate high-quality microwave pulse generation with multiple pulse shapes based on an integrated silicon dual-parallel Mach–Zehnder modulator. Three typical microwave pulses, including sinc-shaped Nyquist pulses, triangular pulses, and Gaussian pulses, are successfully generated. The device is capable of multi-wavelength operation with a tunable repetition rate. All the generated pulses show a root mean square error below 4%. The comparison with the results based on LiNbO3 modulators and other silicon modulators is also provided to confirm the high quality of generated pulses. Our article demonstrates the high tunability of microwave pulse generation with silicon modulators and shows the potential of an integrated silicon chip to generate high-speed photonic and microwave pulse trains demanded in optical communications and integrated microwave photonics.

中文翻译：

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使用硅双并行调制器生成微波脉冲

紧凑和集成的微波脉冲生成可以使集成微波光子学中的各种应用受益。我们展示了基于集成硅双并联 Mach-Zehnder 调制器的具有多种脉冲形状的高质量微波脉冲生成。成功产生了三种典型的微波脉冲，包括正弦形奈奎斯特脉冲、三角脉冲和高斯脉冲。该设备能够以可调重复率进行多波长操作。所有生成的脉冲均显示出低于 4% 的均方根误差。还提供了与基于 LiNbO3 调制器和其他硅调制器的结果的比较，以确认生成的脉冲的高质量。