Multigigabit optical interconnection LSIs

A new LSI configuration is proposed for multigigabit optical interconnections with a view to low-cost, low-power-dissipation, and precise-adjustment-free interconnection modules. This configuration is based on (a) minimization of additional functions for the optical transmitter and receiver and (b) realization of fully digital automatic timing adjustment. Test fabrication results of the transmitter and receiver LSIs, and modules show the effect of this new configuration, that is, a 2.8-Gbit/s operation at a received power of -9 dBm through a 100-m optical fiber.