All-optical logic based on silicon micro-ring resonators

Opt Express. 2007 Feb 5;15(3):924-9. doi: 10.1364/oe.15.000924.


We demonstrate all-optical logic in a micron-size silicon ring resonator based on the free-carrier dispersion effect in silicon. We show AND and NAND operation at 310 Mbit/s with ~10-dB extinction ratio. The free-carrier-lifetime-limited bit-rate can be significantly improved by active carrier extraction.