Mancinelli M, Borghi M, Ramiro-Manzano F, Fedeli J M, Pavesi L
Opt Express. 2014 Jun 16;22(12):14505-16. doi: 10.1364/OE.22.014505.
Optically induced thermal and free carrier nonlinearities in silicon micro-ring resonator influence their behavior. They can be either deleterious by making them instable and by driving their resonances out of the designed wavelengths, or enabler of different applications. Among the most interesting one, there are optical bistability and self induced oscillations. These lead to all optical logic, signal modulation, optical memories and applications in neural networks. Here, we theoretically and experimentally demonstrate that when many resonators are coupled together, thermal and free carrier nonlinearities induce also chaos. The chaotic dynamics are deeply analyzed using experimentally reconstructed phase space trajectories and the tool of Lyapunov exponents.
硅微环谐振器中的光致热非线性和自由载流子非线性会影响其行为。它们可能是有害的，会使其不稳定并使共振偏离设计波长，也可能是不同应用的促成因素。其中最有趣的应用包括光学双稳性和自激振荡。这些可实现全光逻辑、信号调制、光存储器以及神经网络中的应用。在此，我们通过理论和实验证明，当多个谐振器耦合在一起时，热非线性和自由载流子非线性也会引发混沌。利用实验重建的相空间轨迹和李雅普诺夫指数工具对混沌动力学进行了深入分析。
