论文标题
高速可调微波速率孤子微重骨
High-speed tunable microwave-rate soliton microcomb
论文作者
论文摘要
具有快速调整的微波信号生成的基础是许多应用，包括传感，成像，范围，时间保留，无线通信和高速电子设备。孤子微核心是基于光子的微波信号合成的一种有希望的新方法。然而，迄今为止，微型群（通常在频率梳中）的调整速率受到限制。在这里，我们演示了第一个微波速率索尼顿微型炸弹，其重复率可以高速调节。通过将电气调谐/调制元件整合到尼贝特木梳子微孔子中，调制带宽高达75 MHz，连续调制速率可达到5.0 * 10^14 Hz/s，比现有微型bomb技术更快。这些功能对于将光学VCO进行长期参考（例如光学时钟或双微晶时钟或合成器中的紧密相位锁定）特别有用。此外，微波信号速率可以设置为任何X -W频段速率。除了对微波光子学的积极影响外，快速重复率控制通常在频率梳子的所有应用中都很重要。
Microwave signal generation with fast frequency tuning underlies many applications including sensing, imaging, ranging, time keeping, wireless communication, and high-speed electronics. Soliton microcombs are a promising new approach for photonic-based microwave signal synthesis. To date, however, tuning rate has been limited in microcombs (and in frequency combs generally). Here, we demonstrate the first microwave-rate soliton microcomb whose repetition rate can be tuned at a high speed. By integrating an electro-optic tuning/modulation element into a lithium niobate comb microresonator, a modulation bandwidth up to 75 MHz and a continuous frequency modulation rate up to 5.0 * 10^14 Hz/s are achieved, several orders-of-magnitude faster than existing microcomb technology. These features are especially useful for disciplining an optical VCO to a long-term reference such as an optical clock or for tight phase lock in dual-microcomb clocks or synthesizers. Moreover, the microwave signal rate can be set to any X - W band rate. Besides its positive impact on microwave photonics, fast repetition rate control is generally important in all applications of frequency combs.
