The capability to store light for extended periods of time enables optical cavities to act as narrowband optical filters, whose linewidth corresponds to the cavity’s inverse energy storage time. Here, we report on nonlinear filtering of an optical pulse train based on temporal dissipative Kerr solitons in microresonators. Our experimental results in combination with analytical and numerical modeling show that soliton dynamics enables information storage about the system’s physical state longer than the cavity’s energy storage time, thereby giving rise to a filter width that can be more than an order of magnitude below the cavity’s intrinsic linewidth. Such nonlinear optical filtering can find immediate applications in optical metrology, and low-timing jitter ultrashort optical pulse generation and potentially opens new avenues for microwave photonics.

中文翻译：

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耗散克尔孤子对光脉冲序列的非线性滤波

能够长时间存储光的能力使光学腔体可以用作窄带滤光器，其线宽对应于腔体的逆能量存储时间。在这里，我们报告非线性微谐振器中基于时间耗散Kerr孤子的光脉冲序列滤波。我们的实验结果与分析模型和数值模型相结合，显示孤子动力学使有关系统物理状态的信息存储比腔体的能量存储时间更长，从而使滤波器的宽度比腔体的本征低了一个数量级。行宽。这种非线性光学滤波可以在光学计量学中找到直接的应用，并且可以产生低定时抖动，超短光脉冲，并有可能为微波光子学开辟新的途径。