Thanks to Morningstar's posting in off topic forum.

This statement beow is from Bill Gartner vice president and general manager at Cisco and he made this comment after the acquistion of Luxtera.So technically CISCO does not have solution until ths Feb 2019(article dated), imo.

In terms of technology,the biggest elephant in the room is the lack of a silicon-photonics laser integrated in the chip to get data off quickly, Gartner said. “No one has developed that yet, and it is one of the holy grails of photonics.”

https://www.networkworld.com/article/3339360/cisco-pushes-silicon-photonics-for-enterprise-webscale-networking.html

cheers

Libran