White Papers

400G: Are 8 lanes greater than 4?

Dr. Rob Kalman, V.P. of Engineering

 

4 x 50GBd PAM4 vs. 8 x 25GBd PAM4

 

Abstract: Hyperscale data centers drive the state of the art in speed, cost, size, and power of optical transceivers. Advances in multi-lane optical packaging, manufacturing automation, and 25GBd components have enabled massive volumes and low costs in 100G transceivers. This suggests 8-lane x 25GBd transceivers rather than 4-lane x 50GBd transceivers may provide a superior near-term 400G intra-data center solution.

 

Download the White Paper as PDF: 
Kaiam_WhitePaper_400G_8_vs_4-lane_2018-06-11.pdf