Acacia

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High-speed coherent optical interconnect products that transform communications networks, relied upon by network equipment providers, hyperscalers, service providers.

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Accelerating AI Scale-Across Networks with Secure 800ZR MACsec
Sep 14, 2026 · original
Acacia Shares Strategies for Scale-Out and Scale-Across Architectures at ECOC 2026 Acacia is introducing a new 800ZR module with Media Access Control Security (MACsec) and full interoperability that enables hyperscalers and neocloud network operators to secure scale-across interconnects between AI data centers up to 1000 km apart. The 800ZR MACsec module expands on the industry’s broadest coherent pluggable portfolio which includes a mix of 800ZR/ZR+, 400ZR/ZR+, 400G ULH, and 100ZR supporting C + L band in multiple form factors including QSFP-DD, OSFP, CFP2, and QSFP28. Deployed by the five largest hyperscalers and many other network operators, Acacia is the market share leader in coherent technology, according to LightCounting . Strategies for AI Scale-Out and Scale-Across Architectures The ability to scale the network at the same pace as the compute is expected to be one of the most ch
Architecting for the Future: The Strategic Impact of 1600G Coherent Evolution
Sep 14, 2026 · original
High-capacity data center interconnect (DCI) applications have driven a tremendous increase in coherent optical technology usage over previous generations. The introduction of 400G coherent pluggables for hyperscale applications began a shift of these DCI connections to move away from line system transponder terminations using performance-optimized coherent optics towards QSFP-DD and OSFP based coherent pluggable optics. While transponder-based deployments continue to make sense in some situations, an increasing number of new and upgraded DCI deployments, especially with reaches within the 1000 km range, have been rapidly adopting coherent pluggable optics that can be plugged directly into switches and routers. That continues today as hyperscalers not only increase DCI capacity from 400G to 800G per wavelength, but also ensure their networks can accommodate the rise in AI scale-across tr
Will Coherent Pluggables Take Over Everything?
Jun 26, 2026 · original
The success of coherent pluggables has been truly phenomenal, expanding from its original target use case of DCI and into shorter reach campus and access applications as well as long-haul and even subsea. As the graph from LightCounting illustrates, coherent pluggables continue to grow, but the performance-optimized embedded market is also seeing steady growth. Even though the performance and applications for pluggable coherent modules continue to move closer to those of the performance optimized coherent solutions, there are still some customers that want to use a separate transponder. Image 1: LightCounting forecast (2018–2029) comparing the growth of Coherent On-Board and Coherent Pluggable technologies highlights the accelerating market demand for pluggable solutions. Longer Reaches and Wider Bandwidth With each new pluggable generation, the applications and capabilities that can be
Why are Coherent Optics So Important for Scale Across?
May 6, 2026 · original
At OFC last month there was a lot of discussion about the three architectural strategies for expanding system capacity: scale up, scale out, and scale across. Scale up refers to scaling within a rack, while scale out extends outside of the rack and throughout the data center. And when that’s not enough to handle the AI workloads, providers look to scale across multiple data centers so that resources such as GPU power can be distributed across multiple geographic locations. While we discussed these new architectures in a previous blog , this blog will focus on scale across and how coherent optics are a key enabler. What is Scale Across? To alleviate power and space constraints, algorithmic improvements have made it possible to expand outside a single data center facility (to campus, metro, and even beyond). This is referred to as the scale-across network—connecting a back-end network acro
Maximizing Subsea Capacity with Programmable 140Gbaud Transmission
Mar 13, 2026 · original
By Eugene Park, Acacia & Jonathan Homa, Ribbon | Posted on March 13, 2026 Maximizing Capacity Over Speed While the race to expand networking infrastructure to support AI applications continues on land, the same expansion is occurring undersea. Subsea cables spanning Earth’s oceans must evolve to keep pace. In November 2025, Ribbon Communications announced the successful optical transmission of an impressive 20Tbps over the 10,000km JUNO trans-Pacific cable. This field trial was performed in conjunction with Seren Juno, the cable operator. The JUNO cable system, which connects Japan and the United States, is currently the largest capacity operational trans-Pacific cable system. The cable is designed to handle a total of 360Tbps, consisting of leading-edge space division multiplexing (SDM) technology utilizing 20 fiber pairs. 20Tbps is also the capacity that Ribbon is delivering to Moratel
Acacia Demonstrates Coherent Technology Market Leadership at OFC 2026
Mar 10, 2026 · original
Expands Coherent Pluggable Portfolio with New Bright QSFP28 100ZR Module After nearly two decades of delivering innovation and industry-first coherent technology to the optical networking industry, Acacia is proud to head to this year’s OFC as the market share leader in coherent technology, according to research analysts LightCounting and Cignal AI . This is driven by the success of its broad portfolio of both performance optimized and MSA pluggable coherent modules covering access, edge, DCI, metro, long haul, subsea, and low earth orbit satellite applications. Acacia’s coherent port shipments show continued market share leadership: 100k 1.2T Jannu DSP ports powering the CIM 8 performance optimized module 750k 400G ports based on the Greylock DSP 25k 800G ports based on the Delphi DSP Analysts such as Cignal AI are already predicting that the ramp of 800G ZRx pluggables will surpass all
Acacia Samples 1.6T PAM4 DSP for Scaling AI Architectures
Mar 10, 2026 · original
With AI driving unprecedented demands on networking infrastructure, optical interconnect components such as PAM4 DSPs have become critical for delivering the intra-data center bandwidth needed for operators to quickly scale-out their networks with reliable, low-latency, high-bandwidth connectivity. This demand for higher interconnect speeds is accelerating the transition to 1.6T, with LightCounting forecasting sales of 1.6T Ethernet optical transceivers to exceed $15 billion by 2030. 1.6T Connectivity for Scale-out and Scale-Across Architectures While scale-up networks focus on connecting as many GPUs as possible for parallel processing, scale-out networks then connect these scale-up nodes together. Scale-out architectures require very high-speed interconnects with higher-bandwidth, lower power and smaller footprint. PAM4 DSP ASICs meet this need by doubling the bit rate of short reach o
Scaling AI at the Speed of Light
Feb 13, 2026 · original
Our previous blogs explored how optical interconnects are enabling the AI networking infrastructure to scale, both from the training as well as the inference perspective. As these blogs highlighted, training models are expected to outgrow a single physical data center in terms of space and power, which would lead to distributed training across multiple sites, known as scale-across networking. In this blog, we’ll review how the AI network infrastructure is evolving and dive deeper into how optical interconnects play a crucial part in this network inside and outside the data center. Models are Getting Larger! When reviewing the various AI training models and how they’ve been progressing, it’s no surprise that the models and their associated training cluster sizes are getting larger and larger over time. AI clusters continue to quickly evolve: the number of model parameters are increasing,
Benny Mikkelsen’s ECOC 2025 Plenary Recap
Nov 10, 2025 · original
Denmark native and Acacia’s co-founder Benny Mikkelsen was honored to give a plenary talk during the opening ceremony at the 2025 European Conference on Optical Communication (ECOC). In this blog, we’ll summarize the key points of his presentation, titled “Coherent Optics: Powering the Next Decade of Optical Communications.” We Are in the Coherent Era Benny discussed how innovations and key milestones over the last 4 decades paved the way to today’s “coherent era” in transport communications. These continued advancements led to breakthroughs in coherent technology such as the ability to transmit terabits per second over a single wavelength and the use of coherent in very small pluggable form factors that plug directly into switches and routers. Decades of advancements in optical networking have led to today’s coherent era. Expanding Use Cases: Over Land, Sea, Space As Benny explained, th
How Optical Interconnects and Client Optics Components are Driving AI Networking Expansion
Sep 25, 2025 · original
Artificial intelligence (AI) is one of the most transformative technologies of our time, driving unprecedented demands on networking infrastructure to provide significantly higher data rates to support a tremendous amount of computational and informational traffic needed for training and inference. This has led to a significant increase in demand for optical interconnects that are able to support the increasing speeds required for AI networking infrastructure. While optical interconnects provide the necessary bandwidth to support high data rates, the critical factors for the network infrastructure are the reliability and robustness of these optical interconnects to ensure consistent, error-free data transmission. AI training involves highly parallel, batch-based computation. A link error on any of the interconnects is very impactful as the batch must be restarted, and the downtime during

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