%Ultra-low voltage, ultra-small mode volume rings, S. Manipatruni, OE2010 \OIL 008 mod Ring 4 \LAYER1 MAT:SI THI:10um IND:3.46 \END LAYER1 \LAYER2 MAT:SIO2 THI:2um IND:1.46 \END LAYER2 \LAYER3 MAT:SI THI:0.3um IND:3.46 \END LAYER3 \LAYER4 MAT:SIO2 THI:1.0um IND:1.46 \END LAYER4 \TOP BER:1.0e-10 BR:2.5um DR:4.0Gbps EbC:7.9fJ/bit EC:0.3mW LEN:16um VB:0.5V WW:1563.5nm+-0.5 WID:10um \END TOP