A 40-Gb/s SiGe-BiCMOS MZM Driver With 6-V $_{\text {p-p}}$ Output and On-Chip Digital Calibration

A wide-swing optical modulator driver is implemented in 0.13-μm SiGe-BiCMOS using a three-stage distributed amplifier with a digital input line. Measurements demonstrate 6-Vp-p differential output, symmetric 6-ps (min) rise/fall times, 333-fs (rms) additive jitter, and better than 20-dB output return loss (S11) below 58 GHz. Full output swing with adjustable (6-12 ps) rise/fall times is realized a...