Forty Gb/s hybrid silicon Mach-Zehnder modulator with low chirp

We demonstrate a hybrid silicon modulator operating up to 40 Gb/s with 11.4 dB extinction ratio. The modulator has voltage-length product of 2.4 V-mm and chirp of -0.75 over the entire bias range. As a switch, it has a switching time less than 20 ps. (c) 2011 Optical Society of America