Thesis
Coherent is one of the few companies with a truly vertical optical stack for the AI networking build-out. It spans materials, devices, modules, and systems across datacenter and communications, from indium phosphide lasers, modulators, and photodiodes to transceivers, optical transport, and emerging co-packaged optics (CPO) solutions. That breadth matters because the next leg of optical spending is not about one isolated component. It is about customers needing multiple optical architectures at once: 1.6T pluggables, 3.2T roadmaps, CPO experiments, and scale-across transport as AI clusters get larger and faster.
The business is already proving the demand is real. In fiscal second quarter 2026, revenue was $1.69 billion, up 17% year over year, with management again citing strong datacenter and communications demand and expecting continued strong growth through the second half of fiscal 2026 and throughout fiscal 2027. The real investment question is whether datacenter and communications gets large enough, and rich enough, to re-rate the whole company rather than simply offset softer industrial categories. If it does, Coherent can look less like a broad photonics conglomerate and more like a scarce optical infrastructure platform. If it does not, the stock remains a company with great technology but more average earnings quality than the bull case assumes.
Coherent is clearly benefiting from AI-driven optical demand. The real question is whether datacenter and communications becomes strong enough to change how the whole company is valued rather than simply carrying the rest of the portfolio.
Valuation and financials
The 4Ps
CEO Jim Anderson has focused the story around datacenter and communications, cleaner execution, and balance-sheet repair. That matters because Coherent used to feel like too many businesses under one roof. The leadership task now is to prove the optical portfolio can drive enough mix improvement that investors stop treating the company like a broad photonics holding company and start treating it like a datacenter optics platform with real leverage.
Coherent matters because it is not just a merchant optical component vendor. The company can support multiple architectures across InP, silicon photonics, VCSELs, transport systems, and transceivers. The March 2026 OFC launches made that clear: 1.6T, 3.2T, and even 12.8T-plus optical roadmaps, plus CPO technologies and multi-rail transport, all sit inside the same broader stack. That gives Coherent more ways to win than a single-lane optics story.
The simple bull case is more revenue. The better bull case is that datacenter and communications keeps taking mix from weaker categories while capacity expansion and a richer optical portfolio lift gross margin and earnings power. If that happens, investors can justify paying for a stronger, longer optical cycle rather than for a short-lived datacom spike.
The good news is that the datacenter and communications backlog and product breadth give Coherent more visibility than a one-product optical supplier. The caveat is that the company still has industrial and other exposure, and that breadth can blur the signal if one part of the portfolio improves while another part lags. So the confidence band is decent, but the mix still needs monitoring.
Portfolio manager lens
Starting point: Coherent is one of the broadest ways to own the optical stack around AI networking, with real leverage to the next several architecture shifts.
What is in the stock: strong datacenter and communications demand, a rising segment mix, and the belief that vertical optical breadth is worth more than investors currently give it credit for.
What can still surprise upside: datacenter and communications becoming an even larger share of revenue, better gross margins from richer optical mix, and real commercialization of newer 1.6T, 3.2T, and CPO technologies.
What changes the view: industrial drag overpowering the optical story, weaker margin follow-through, or evidence that the company is supporting many optical roadmaps without capturing enough of the economic upside.
Trade framing
This is not an undiscovered optical winner anymore. The market knows Coherent has strong datacenter demand. The better setup from here is around confirmation that the better mix is durable and increasingly central to the business.
The next checkpoints are practical: do Datacenter and Communications revenues keep growing faster than Industrial, do gross margins keep expanding, and do the 1.6T, 3.2T, and CPO-related launches translate into real shipped content instead of just technology demos? If the answer stays yes, the stock can still rerate. If not, it will fall back into the bucket of very good technology wrapped in a less special corporate structure.
What matters now
What matters now is whether datacenter optics becomes large enough to overpower the rest of Coherent's more cyclical portfolio. The checkpoints are continued transceiver and laser demand, communications-margin improvement, and evidence that optical strength is changing the mix rather than only offsetting weaker lanes.
Key questions
Coherent is a photonics company with a very broad product base. Since fiscal 2026, it has reported through two segments: Datacenter and Communications and Industrial. On the first-quarter fiscal 2026 investor presentation, Datacenter and Communications represented about 69% of revenue, up from 62% in fiscal fourth quarter 2025. That tells you where the center of gravity now sits.
The actual product set is wide. Coherent's datacenter and communications portfolio includes transceivers, transport equipment, optical circuit switch-related technology, active optical and direct-attach cables, InP lasers, photodiodes, communication components, wavelength-management modules, and multi-rail optical networking platforms. In plain English, it is one of the few companies that can participate from the optical building block all the way toward the system layer.
Thesis last reviewed April 2, 2026. Live data updates automatically.