Slow light in hundreds of coupled silicon-on-insulator microrings

摘要

Recently, we have demonstrated slow light propagation in coupled-resonator optical waveguides consisting of upto 235 directly-coupled silicon microrings. High resolution spectral measurements of light transmission and the scaling of transport statistics with increasing length reveal that resonator excitations are mutually correlated, as expected from theory. Successful light transmission through coherently-coupled resonator chains that are several hundreds of resonators long is promising for future large-scale silicon photonic circuitry.