Ciena is supporting world checks and trials of 1.6 Tbps community speeds, to fulfill the calls for of
OTTAWA, Canada—The present quickest middleman of high-speed networking glimmered inexperienced, gold and silver in Helen Xenos’ fingers, the results of years of analysis and improvement in Ciena’s Ottawa lab.
The printed circuit board, gleaming parts and connectors of the WaveLogic 6 Excessive signify the muse of the high-speed networking tools in excessive demand by service suppliers and hyperscalers, as they scramble to fulfill the community wants of synthetic intelligence.
Xenos, Ciena’s senior director of portfolio advertising and marketing, mentioned that the corporate’s prospects need three issues: To scale their networks. To scale back their price per bit. And to scale back energy utilization, or watts per bit. The WaveLogic Excessive household represents Ciena’s work to fulfill these calls for, and achieve this in a number of kind components for various functions.
This WL6e showcase, throughout the firm’s current Vectors 2025 multi-week occasion, introduced a lot of Ciena’s prospects to the lab in Ottawa to see the corporate’s newest improvements in-person.
Evolving velocity and capability in networks
The velocity and capability calls for ripple throughout networks sooner and sooner today. Within the late oughts, coherent optics had been primarily deployed in long-haul and submarine networks, then rapidly unfold to metro/regional connectivity. By the mid-2010s, hyperscale cloud suppliers had been shifting from utilizing darkish fiber from service suppliers and had begun to construct their very own customized networks. Coherent optics started to be essential not just for long-haul however for DCI, or knowledge middle interconnect—finally, over lots of or a thousand kilometers, as demand for cloud computing started to really take off.
Previously 20 years, Ciena has elevated the info throughput carried throughout every wavelength from 10 gigabits to 1.6 terabits, or 160x. As Xenos explains, meaning needing considerably much less equipment-footprint as a way to carry way more capability, whereas lowering watts per bit by greater than 95%. The WL6e, which helps community speeds as much as 1.6 terabits per second turned commercially accessible within the fall of 2024. Since then, a variety of 1.6 TB checks and know-how trials with suppliers starting from Telstra to Verizon, have signaled {that a} new period of AI-driven community speeds (and the accompanying upgrades) is on the best way.
“The speedy growth and distribution of AI coaching and inferencing infrastructure is driving world funding in ultra-scalable, high-performance networks operated by each service suppliers and cloud suppliers,” mentioned Ciena CEO Gary Smith on the corporate Q1 2025 name, including that Ciena is anticipating “massive, long-term funding plans over a few years to return” to help the supply and monetization of AI. Current evaluation by McKinsey tasks that by 2030, knowledge facilities will $6.7 trillion worldwide in capital outlays, to maintain up with the demand for compute.
Smith mentioned that direct orders from cloud suppliers accounted for greater than half of orders within the first quarter, and that the corporate had seen its “strongest back-to-back quarters of orders from service suppliers in over two years.” 5 cloud suppliers had been in Ciena’s high 10 prospects for the quarter.
Smith particularly referred to as out WaveLogic 6 Excessive as being “off to an extremely sturdy begin within the market” and mentioned that the corporate added 20 new WL6e prospects throughout the first quarter of 2025 alone. At this level, they will’t get this type of 1.6T know-how anyplace else.
“We stay the one vendor out there with a 1.6 terabit WAN answer and anticipate to carry that lead on this subsequent era of optical know-how for not less than two years,” Ciena CFO Jim Moyan advised buyers on the decision.
Knitting networks and knowledge facilities collectively
Interconnect inside knowledge facilities, between knowledge facilities and long-haul connectivity are all very totally different functions. As Xenos explains, submarine networks are maximized for spectral effectivity, to get probably the most attainable capability over a restricted and treasured fiber useful resource. In and across the knowledge middle, the precedence is utilizing is lowest quantity of energy within the smallest attainable area—which is why smaller, pluggable designs are so essential.
On the demo in Ottawa, Ciena showcased each, with the pluggable only a fraction of the dimensions of the WL6e modem on show. The WaveLogic 6 Nano, with help for as much as 800G, is predicted to be commercially accessible within the coming weeks, with deployments in metro DCI anticipated late this yr
There are lots of of hundreds of coherent pluggables being deployed in knowledge facilities at the moment. Ciena’s first quarter 2025 outcomes mirrored its highest variety of orders so far for pluggables, and the expects to not less than double its income from pluggables throughout this fiscal yr.
The WaveLogic 6 nano tech additionally helps what the corporate refers to as “Coherent-Lite”, which helps 1.6T connectivity at 2-20 kilometers for knowledge middle interconnections and is predicted to be accessible in 2026. Ciena demonstrated Coherent-Lite at this yr’s OFC. That answer combines traits of coherent know-how and IMDD, or depth modulation direct detection, right into a single product. IMDD is an easier system design for optical communications, typically utilized in shorter-reach functions within the vary of tens-of-kilometers, Xenos defined. It’s a legacy know-how used inside knowledge facilities and knowledge middle campuses—one which isn’t going away any time quickly, she factors out, however which is constrained in phrases velocity, distances and spectral effectivity.
“While you’re making an attempt to push IMDD know-how to do 1.6 TBps, 3.2 terabit per second, it actually could be very restricted to the space that it may possibly obtain,” Xenos mentioned.
Higher efficiency over longer distances is required—specifically given the bottlenecks that knowledge facilities face in energy and actual property. As we speak, AI prospects include tens of hundreds of GPUs that should be related. That’s anticipated to develop to lots of of hundreds of GPUs within the coming yr, in tasks just like the Stargate DC cluster within the works in Texas.
At that time, the GPU clusters take up multiple constructing, and maybe multiple campus—however nonetheless want ultra-fast, high-performance connections. Coherent-Lite extends flexibilty and scaling by enabling connections over, say, 10 and even 20 kilometers, somewhat than one to 2, Xenos explains—enabling knowledge facilities to scale.
A wall of fiber
Down one of many hallways at Ciena’s Ottawa lab, a stack of rectangular, glass home windows stretch from the ground practically to the ceiling. On the opposite facet of every window sits spool after spool of pale, gleaming fiber, tucked tidily side-by-side. These spools include, in whole, lots of of hundreds of miles of fiber, in order that the lab can replicate bodily transmission of alerts with no need to make use of an precise community.
The demo of the WaveLogic Excessive options—each the WaveLogic 6 Nano pluggable supporting 800 Gbps, side-by-side with the WaveLogic 6 Excessive supporting 1.6 Tbps—is ready to precisely signify their efficiency by organising a testing situation that represents a fiber connection of greater than 500 kilometers. The community deployment isn’t actual, however the fiber is.
Ciena’s fiber spools signify the bodily actuality of lots of of hundreds of miles of fiber and allow the corporate to duplicate buyer networks with the kind of fibers that they’ve. Service supplier and fiber community operator prospects, a lot of whom visited the lab throughout the Vectors 2025 occasion, can see how Ciena merchandise would carry out in their very own networks.
Constructing from the chip-level
Whereas fiber and knowledge middle constructions typically seize the infrastructure funding headlines, high-speed networking tools like Ciena’s allows the communications throughout the bodily connections. The corporate has pushed to 1.6 Tbps with a sequence of modern design decisions, together with what it says is the primary use of 3nm CMOS for networking, versus shopper functions.
It’s a multi-year course of to go from formulation on white boards to code to ASICs, Xenos explains, and requires deep understanding of buyer wants, years forward of any precise deployments. However Ciena’s engineers are its distinctive power, and as is their technical data throughout quite a few associated however disparate areas wanted to construct its options: supplies science; high-bandwidth conversions between analog and digital alerts; and the flexibility to place in play electro-optics able to 200 gigabaud (GBd), or 200 billion sign modifications per second, to call just a few.
“It’s very, very troublesome to realize that, to have the experience to do this,” Xenos mentioned. “We now have this experience in-house.”
Xenos emphasizes that Ciena’s manufacturing can also be fabless by design, so it isn’t tied to a particular materials. Its latest coherent driver modulator relies on indium phosphide, identified for being significantly thermally steady; the corporate additionally implements silicon photonics.
“We will choose the the judiciously choose the precise know-how for the design for particular functions,” Xenos mentioned of the supplies facet.
She continued: “We couldn’t develop this if we had been reliant on different folks. We wouldn’t have been in a position to to deliver this to market as early as we did. It offers us management over the design and management over time to market, to be vertically built-in.”
Xenos wrote in a weblog put up on WL6e earlier this yr that: “Co-development of the WL6e modem design, with specialists throughout coherent DSP, RF design, high-speed converters, electro-optics, and optical propagation all working collectively, has resulted in a product that ‘simply works’ to ship unbelievable efficiency, akin to 1 Tb/s single-carrier wavelength throughout 13,500 km, one thing that was beforehand unimaginable.”
She added: “Furthermore, the many years of expertise and distinctive insights of the Ciena workforce was crucial in guaranteeing that the superior know-how may very well be manufactured in quantity, an element simply as essential as attaining the excessive efficiency WL6e design.”
One wall specifically within the lab displays these many years. Poster-sized enlargements of the layouts of a number of generations of Ciena WaveLogic chips hold on that wall, testimony to the intricacy and evolution of each the corporate’s know-how and the complexity of contemporary optical communications.
The outcomes of that work are buzzing and blinking away in Ciena’s lab, and making their manner into high-speed networks world wide.
