300-Gbit/s/λ PAM8 Modulation with a Silicon Microring Modulator using Long Short Term Memory Regression and Deep Neural Network Classification

We demonstrate a 300-Gbit/s PAM8 modulation using a 55-GHz bandwidth silicon-microring-modulator (SiMRM) with a driving voltage of 1.8-Vpp. To achieve high-order PAM8 modulation, long-short-term-memory (LSTM) and deep-neural-network (DNN) are used for regression and classification respectively.