Controlled coupling in silicon microrings for high-speed, high extinction ratio, and low-chirp modulation

Silicon-on-insulator microring modulators with integrated Mach-Zehnder interferometer couplers exhibiting drive voltages near 1 V, modulation insertion loss < 1 dB, extinction ratios as large as 16 dB, and low chirp are demonstrated. © OSA/ CLEO 2011.