High-speed silicon micro-ring modulator at 2-μm waveband

Silicon micro-ring modulator with 18-GHz electro-optic bandwidth and <1-V $\cdot$ cm modulation efficiency was reported, achieving 50-Gbps highest-speed signaling at 1960 nm. Better endurance of two-photon absorption at $2{\mu \text{m}}$ leads to significantly improved high-speed performances. © 2021 The Author(s)