AI infrastructure investments drive demand for Ciena’s products including 800G coherent optics

Posted on June 7, 2025 by Alan Weissberger

Artificial Intelligence (AI) infrastructure investments are starting to shift toward networks needed to support the technology, rather than focusing exclusively on computing and power, according to Ciena Chief Executive Gary Smith. The trends helped Ciena swing to a profit and post a 24% jump in sales in the recent quarter.

The company enables high-speed fiber optic connectivity for telecommunications and data centers, helping hyper-scalers such as Amazon and Microsoft support AI initiatives via data center interconnects and intra-data center networking. Currently, the company is ramping up production to meet surging demand fueled by cloud and AI investments.

“There’s no point in investing in these massive amounts of GPUs if we’re going to strand it because we didn’t invest in the network,” Smith said Thursday.

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Ciena sees a bright future in 800G coherent optics that can accommodate AI traffic. Smith said a global cloud provider has selected Ciena’s coherent 800-gig pluggable modules and Reconfigurable Line System (RLS) photonics for investing in geographically distributed, regional GPU clusters. “With our coherent optical technology ideally suited for this type of connectivity, we expect to see more of these opportunities emerge as cloud providers evolve their data center network architectures to support their AI strategies,” he added.

It’s still early innings for 800G adoption, but demand is climbing due to AI and cloud connectivity. Vertical Systems Group expects to see “a measurable increase” in 800G installations this year. Dell’Oro optical networking analyst Jimmy Yu noted on LinkedIn Ciena’s data center interconnect win is the first he’s heard of that involves connecting GPU clusters across 100+ kilometer spans. “It was a hot topic of discussion for nearly 2 years. It is now going to start,” Yu said.