Microring resonators (MRRs) are promising devices for time-delay photonic
reservoir computing, but the impact of the different physical effects taking
place in the MRRs on the reservoir computing performance is yet to be fully
understood. We numerically analyze the impact of linear losses as well as
thermo-optic and free-carrier effects relaxation times on the prediction error
of the time-series task NARMA-10. We demonstrate the existence of three
regions, defined by the input power and the frequency detuning between the
optical source and the microring resonance, that reveal the cavity transition
from linear to nonlinear regimes. One of these regions offers very low error in
time-series prediction under relatively low input power and number of nodes
while the other regions either lack nonlinearity or become unstable. This study
provides insight into the design of the MRR and the optimization of its
physical properties for improving the prediction performance of time-delay
reservoir computing.

微环共振器是时间延迟光子储层计算的有希望的设备，通过数值分析我们发现不同物理效应对于数据预测准确性的影响，研究结果揭示了三个区域，这些区域定义了线性到非线性的腔体转变，其中一个区域在输入功率和光源与微环谐振频差之间表现出较低的预测误差，这项研究为改进时间延迟储层计算的预测表现提供了设计微环共振器和优化其物理特性的见解。