John D'Ambrosia, chairman of the Ethernet Alliance, points out that IEEE has spent 40 years standardizing six Ethernet rates, but now it is standardizing six new rates at the same time.
The work of the original 25GbE Working Group has been completed, and now the work of the 50GbE and 200GbE Working Groups has started to run. All 50G, 200G and next generation 100G targets are based on 50G PAM4 building blocks. In order to add a single-mode solution for 200GbE on the basis of shared technology, the 400GbE Working Group redesigned the solution. All this means that three IEEE 802.3 working groups will define 12 additional high-speed (25G and above) optical interface standards.
Cott Kipp from Boko summarizes the work of IEEE as follows:
New optical modules will have new packaging forms
In general, the panel density must keep up with the horizontal and vertical development of large data centers. Breakthroughs from modules to servers and from switches to switches have become increasingly important. Integrating more functional ports in the same space means new encapsulation patterns and new interfaces. The Ethernet Federation depicts the new interface in the following figure:
However, the combination of all new optical PMDs and packages with multiple electrical interfaces means that there will be a large wave of optical modules to be developed, that is to say, the development of optical modules will be further diversified.