Fig. 3: Frequency responses of a two-segment Si microring modulator (MRM).
From: A 5 × 200 Gbps microring modulator silicon chip empowered by two-segment Z-shape junctions
a, d Measured (red) and fitted (blue) Smith charts of S11 for the least significant bit (LSB) and most significant bit (MSB) at -3 V. b, e, Fitted equivalent circuits and corresponding junction resistance-capacitance (RC) responses for LSB and MSB at -3 V. c, f Measured electro-optic (EO) responses (∣S21∣2) for LSB and MSB with detuning of Δλ ~ 0.1 nm at −3 V.
