Why Vertical Integration Is Becoming Critical in Optical Supply Chains

Q&A with Simon Ximen, AVP, Business Development & Sales

As AI infrastructure accelerates demand for higher-speed connectivity, the conversation around optical transceivers is shifting. To better understand what’s changing and why manufacturing strategy is becoming more important, AOI’s Simon Ximen, AVP of Business Development & Sales, talks about the role of vertical integration in today’s optical supply chain.

Q: How is AI infrastructure changing the requirements for optical networks?

AI workloads are fundamentally different from traditional cloud traffic. We are seeing a shift from North-South (user-to-server) to massive East-West (server-to-server) traffic within GPU clusters. These GPUs must stay synchronized; even micro-fluctuations in latency or throughput can stall an entire training job. This is driving the transition to 800G and 1.6T speeds where the tolerance for signal degradation is nearly zero.

Q: What challenges does that create for the current supply chain model?

The traditional model relies on multiple vendors across different stages of production. For example, lasers from one supplier, wafers from another, and assembly somewhere else. That approach has worked, but under current conditions it’s starting to show strain.

Data center operators are facing "jitter" in the supply chain: shifting lead times and, more critically, performance variability between batches. When optics deployments are tied to strict GPU delivery windows and power-on deadlines, a delay in a single component can stall a multi-billion-dollar project.

Q: Where does vertical integration come into play?

Vertical integration addresses those challenges by bringing critical parts of the manufacturing process under one roof. That includes laser fabrication, optical assembly, and final module production.

Instead of managing a dozen vendors, you manage a single, integrated quality-control system. It transforms the supply chain from a series of hand-offs into a continuous feedback loop.

Q: How does AOI approach vertical integration?

AOI’s model is built on in-house control of the entire value chain—from our own laser fabrication to final module assembly. This allows us to tune the laser specifically for the module it will live in, ensuring a level of consistency that is difficult to achieve when buying off-the-shelf components.

Q: Why are hyperscalers paying more attention to this now?

At the scale of an AI mega-cluster, small variables become systemic risks. Differences in laser efficiency show up as thermal spikes or signal integrity issues at 800G and beyond. By controlling the manufacturing environment, we can provide predictable performance across hundreds of thousands of units. Furthermore, reducing third-party dependencies de-risks the capacity planning for the hyperscaler's long-term roadmaps. 

Q: Does vertical integration impact how quickly companies can innovate?

Yes, and that’s an important but sometimes overlooked benefit. When design and manufacturing are closely connected, the feedback loop is much faster.

If a new AI architecture requires a specific thermal profile or a change in laser modulation, our engineers can walk across the hall to the fabrication team. In a market moving as fast as AI, the ability to iterate in weeks rather than months is a significant competitive advantage.

Q: How does this model support scaling production?

Scaling is always complex, but it becomes even more challenging when multiple suppliers need to ramp at the same time.

A vertically integrated model simplifies that coordination. Capacity planning still matters, but it happens within a single organization instead of across several. That makes it easier to align production with demand, particularly as volumes increase for high-speed optics.

Q: Looking ahead, what challenges will shape the next phase of optical development?

As we move toward 1.6T, the focus is expanding beyond raw bandwidth to Power Usage Effectiveness (PUE) and signal integrity. Solving these requires changes at the laser level—not just the module housing. A fragmented supply chain struggles with this kind of cross-disciplinary optimization, which is why the industry is gravitating back toward integrated manufacturing. 

Q: What does this mean for how suppliers are evaluated?

The evaluation criteria are shifting. It’s no longer just about "Price per Gigabit." 

Customers are asking: “Do you own the laser? Can you guarantee batch-to-batch consistency at scale? How many miles of supply chain stand between your factory and my data center?” 

In the AI era, how a transceiver is built has become just as critical as its technical specifications. 

Vertical integration doesn’t answer every question, but it addresses several of them at once. As AI infrastructure continues to drive demand, expectations for performance, scale, and reliability will only increase. In that environment, how optical components are built is becoming just as important as how they perform—making vertical integration an increasingly important for the industry.