Fig. 1: Design of the 8 × 8 T-O and E-O switches.
From: Ultra-low-crosstalk silicon switches driven thermally and electrically
a The 8 × 8 DLN switch topology. Insets show the structure of the 1 × 2 and 2 × 2 MZI switch elements. b Schematic of the T-O phase shifter. c Schematic of the E-O differential phase shifter pair. d Insertion loss under different phase shift settings. Dots and circles on the curves represent the loss and phase for each phase shifter when the switch element is configured in the bar state. e I–V characteristics of the E-O phase shifters, with dots and circles indicating the voltage and current for each phase shifter in the bar state. f Switching time of the E-O differential phase shifter pair, varying with pulse peak voltages
