Microring resonators (MRRs) are reconfigurable optical elements ubiquitous in photonic integrated circuits. Owing to its high sensitivity, MRR control is very challenging, especially in large-scale optical systems. In this work, we experimentally demonstrate continuous, multi-channel control of MRR weight banks using simple calibration procedures. A record-high accuracy and precision are achieved for all the controlled MRRs with negligible inter-channel crosstalk. Our approach allows accurate transmission calibration without the need for direct access to the output of the microring weight bank and without the need to lay out electrical and optical I/Os specific for calibration purpose. These features mean that our MRR control approach can be applied to large-scale photonic integrated circuits while maintaining its accuracy with manageable cost of chip area and I/O complexity.

中文翻译：

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演示用于大规模光子集成电路的可扩展微环配重控制

微环谐振器（MRR）是光子集成电路中普遍存在的可重构光学元件。由于其高灵敏度，MRR控制非常具有挑战性，尤其是在大型光学系统中。在这项工作中，我们通过简单的校准程序实验性地证明了MRR重量库的连续，多通道控制。对于所有受控的MRR，通道间串扰可忽略不计，达到了创纪录的高精度和精确度。我们的方法可以进行精确的传输校准，而无需直接访问微环配重块的输出，也无需布置专门用于校准目的的电气和光学I / O。