3.3-V CMOS pre-equalization VCSEL transmitter for gigabit multimode fiber links

We present results of a 3.3-V CMOS digital preequalization drive chip for vertical-cavity surface-emitting laser-based gigabit multimode fiber links. The pre-equalization can partially compensate for the effects of the limited fiber bandwidth and differential mode delay. This type of equalization may form a low cost method to increase the bandwidth-distance product of current fiber links directly enabling higher optical signaling standards.