论文标题
朝向带有微腔孤子的高功率，高稳态，集成的光子MMWave平台
Towards high-power, high-coherence, integrated photonic mmWave platform with microcavity solitons
论文作者
论文摘要
由于其在无线通信，雷达和光谱法中的广泛应用，毫米波（MMWAVE）技术继续引起人们的兴趣。与纯电子溶液相比，基于光子的MMWave生成可提供宽带的带宽，低功率耗散以及通过低损耗纤维远程。但是，在高频下，光子系统存在两个主要的挑战：光电二极管的功率滚动以及直接从激光器衍生的大信号线宽。在这里，我们通过将集成的微孔子孤子和高速光二极管结合来解决一个新的光子MMWAVE平台，以应对功率和连贯性的挑战。固有模式锁定的孤子通过MMWave Beatnotes之间的建设性干扰提供了5.8 dB的额外增益，并且绝对MMWave功率接近100 GHz的常规杂差检测的理论极限。在我们的自由运行系统中，孤子能够将MMWave线宽降低两个数量级，从泵激光降低两个数量级。我们的工作利用微孔子孤子和高速修改的Uni-Travel载波光电二极管为MMWave应用提供了芯片尺度高功率，低噪声，高频源的可行途径。
Millimeter-wave (mmWave) technology continues to draw large interest due to its broad applications in wireless communications, radar, and spectroscopy. Compared to pure electronic solutions, photonic-based mmWave generation provides wide bandwidth, low power dissipation, and remoting through low-loss fiber. However, at high frequencies, two major challenges exist for the photonic system: the power roll-off of the photodiode, and the large signal linewidth derived directly from the lasers. Here, we demonstrate a new photonic mmWave platform by combining integrated microresonator solitons and high-speed photodiodes to address the challenges in both power and coherence. The solitons, being inherently mode-locked, are measured to provide 5.8 dB additional gain through constructive interference among mmWave beatnotes, and the absolute mmWave power approaches the theoretical limit of conventional heterodyne detection at 100 GHz. In our free-running system, the soliton is capable of reducing the mmWave linewidth by two orders of magnitude from that of the pump laser. Our work leverages microresonator solitons and high-speed modified uni-traveling carrier photodiodes to provide a viable path to chip-scale high-power, low-noise, high-frequency sources for mmWave applications.
