Cisco said 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's 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.”

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