Filter-based Optical Duo-binary Transmitters using Silicon Photonics Micro-ring Modulator

We experimentally demonstrate the feasibility of filter-based duo-binary signals using a micro-ring modulator for the first time. Despite asymmetric E/O conversion, the optimized bias is still around the resonance point. In this case, a nonlinear equalizer could significantly improve the duo-binary signals, despite its binary intensity levels.