Ultra high bandwidth WDM using silicon microring modulators

We report 50 Gbit/s modulation capability using four silicon micro ring modulators within a footprint of 500 microm(2). This is the highest total modulation capability shown in silicon using compact micro-ring modulators. Using the proposed techniques, silicon nanophotonic bandwidths can meet the requirements of future CMOS interconnects by using multiple wavelengths to extend beyond single device speeds.