"With 100 Gbps nearly conquered, Bjorlin says the company has set its sights on emerging 400 Gigabit Ethernet (GbE) applications. Intel expects to have pluggable 400GbE optical transceivers available in the 2018/2019 timeframe. Bjorlin also expects Intel to offer an embedded 400G and 800G product in the same timeframe. She envisions an integrated optical I/O capability for semiconductors to make its debut sometime around 2020."
http://www.lightwaveonline.com/articles/2016/08/intel-shipping-silicon-photonics-optical-transceivers.html