Cisco says it’s closed its deal to buy optical-semiconductor firm Luxtera for $660 million bringing it the advanced optical technology customers will need for speed and throughput for future data-center and webscale networks.

When Cisco announced the deal in December, Rob Salvagno, Cisco vice president of Corporate Business Development, said, “As system port capacity increases from 100GbE to 400GbE and beyond, optics plays an increasingly important role in addressing network infrastructure constraints, particularly density and power requirements.”

The combination of Cisco’s and Luxtera’s capabilities in 100GbE/400GbE optics, silicon and process technology will enable customers to build future-proof networks optimized for performance, reliability and cost, Salvago stated.

The reason Cisco snatched-up Luxtera is its silicon photonics technology that moves data among computer chips optically, which is far quicker than today’s electrical transfer, Cisco says. Photonics will be the underpinning of future switches and other networking devices.

One of the most attractive things about Luxtera is that it is well down the road dealing with the issues around converting electronic information into photons and carrying them over fiber-optic cables directly into semiconductors said Bill Gartner, vice president and general manager with Cisco.

“Luxtera has the silicon photonic