By means of finite-difference time-domain (FDTD) simulations, the stationary and dynamic responses of coupled optical microring resonators made with a material exhibiting an instantaneous Kerr nonlinearity are numerically investigated. We compare the results with the coupled-mode theory (CMT) and find good agreement. We demonstrate by integrating Maxwell’s equations that this system can show a self-pulsing operation in the normal dispersion regime. Finally, this work shows that FDTD simulations can be combined with a CMT analysis for the purpose of designing optical functions whose operation is based on nonlinear coupled micro-resonators.

中文翻译：

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结合FDTD和耦合模式理论在耦合非线性微环谐振器中进行自脉冲建模

通过有限差分时域（FDTD）仿真，以具有瞬时Kerr非线性的材料制成的耦合光学微环谐振器的稳态和动态响应得到了数值研究。我们将结果与耦合模式理论（CMT）进行了比较，并找到了很好的一致性。通过积分麦克斯韦方程，我们证明了该系统可以显示出正常色散状态下的自脉冲操作。最后，这项工作表明，可以将FDTD模拟与CMT分析结合起来，以设计其光学功能基于非线性耦合微谐振器的光学功能。