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首页> 外文期刊>Nature photonics >Ultrabroad-bandwidth arbitrary radiofrequency waveform generation with a silicon photonic chip-based spectral shaper
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Ultrabroad-bandwidth arbitrary radiofrequency waveform generation with a silicon photonic chip-based spectral shaper

机译：利用基于硅光子芯片的频谱整形器生成超宽带任意射频波形

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摘要

Ultrabroad-bandwidth radiofrequency pulses offer significant applications potential, such as increased data transmission rate and multipath tolerance in wireless communications. Such ultrabroad-bandwidth pulses are inherently difficult to generate with chip-based electronics due to limits in digital-to-analog converter technology and high timing jitter. Photonic means of radiofrequency waveform generation, for example, by spectral shaping and frequency–time mapping, can overcome the bandwidth limit in electronic generation. However, previous bulk optic systems for radiofrequency arbitrary waveform generation do not offer the integration advantage of electronics. Here, we report a chip-scale, fully programmable spectral shaper consisting of cascaded multiple-channel microring resonators, on a silicon photonics platform that is compatible with electronic integrated circuit technology. Using such a spectral shaper, we demonstrate the generation of burst radiofrequency waveforms with programmable time-dependent amplitude, frequency and phase profiles, for frequencies up to 60 GHz. Our demonstration suggests potential for chip-scale photonic generation of ultrabroad-bandwidth arbitrary radiofrequency waveforms.
机译：超宽带射频脉冲具有巨大的应用潜力，例如增加的数据传输速率和无线通信中的多径容限。由于数模转换器技术的局限性和高定时抖动，这种基于芯片的电子设备固有地难以产生这种超宽带脉冲。射频波形生成的光子手段，例如通过频谱整形和频率-时间映射，可以克服电子生成中的带宽限制。但是，以前的用于产生射频任意波形的体视光学系统没有提供电子设备的集成优势。在这里，我们在与电子集成电路技术兼容的硅光子平台上报告了一个芯片级的，完全可编程的频谱整形器，该频谱整形器由级联的多通道微环谐振器组成。使用这样的频谱整形器，我们演示了突发射频波形的产生，该突发射频波形具有可编程的随时间变化的幅度，频率和相位曲线，适用于高达60 GHz的频率。我们的演示表明，芯片级光子产生超宽带任意射频波形的潜力。

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