论文标题
单片Kerr和Electro-Optic Hybrid Microcombs
Monolithic Kerr and electro-optic hybrid microcombs
论文作者
论文摘要
基于微孔子的孤子生成的进步有望在跨度保持频率综合的应用的光学频率梳子的芯片尺度集成。微型腔体利用Kerr非线性并启用Terahertz Soliton重复率。但是，如此高的重复率不适合直接电子检测。在这里，我们使用表现出Kerr和Pockels非线性的Niobate薄膜进行了混合KERR和电磁微孔。通过将高重复率的Kerr Soliton梳子与同一波导上的低重复率电孔梳相结合，将宽的Kerr Soliton模式间距分为单个芯片中，从而可以随后对孤子重复速率进行电子检测和反馈控制。我们的工作建立了针对Terahertz重复率的Kerr Solitons的集成电子界面，铺平了通往芯片尺度光学到微波频次频率的路径和梳锁。
Advances in microresonator-based soliton generation promise chip-scale integration of optical frequency comb for applications spanning from time keeping to frequency synthesis. Miniaturized cavities harness Kerr nonlinearity and enable terahertz soliton repetition rates. However, such high repetition rates are not amenable to direct electronic detection. Here, we demonstrate hybrid Kerr and electro-optic microcombs using the lithium niobate thin film that exhibits both Kerr and Pockels nonlinearities. By interleaving the high-repetition-rate Kerr soliton comb with the low-repetition-rate electro-optic comb on the same waveguide, the wide Kerr soliton mode spacing is divided within a single chip, allowing for subsequent electronic detection and feedback control of the soliton repetition rate. Our work establishes an integrated electronic interface to Kerr solitons of terahertz repetition rates, paving the path towards chipscale optical-to-microwave frequency division and comb locking.
