Tackling both the power and capacity bottlenecks of GPU scale-up, Lumentum taps the mature 3D sensing and LiDAR supply chain to redefine high-density interconnect with 1060nm VCSEL arrays.

Lumentum nearly doubled revenue as EML and 1.6T products drove a 2,140 bps jump in operating margin. With demand far outstripping supply, how is Lumentum using NVIDIA's capital and new capacity to chase a $2B quarterly revenue target?

This week: Lumentum's revenue nearly doubles as 1.6T ramps, NVIDIA invests $2B in Coherent's InP capacity, China's NDRC blocks Meta's Manus deal, and TSMC's COUPE silicon photonics platform heads toward mass production.

850 nm is being pushed off the AI scale-up shortlist not because of speed but because of junction temperature. Moving to 1060 nm isn't swapping a die — fiber, PD, packaging and standards all have to change together.

An 850nm VCSEL that passed a 20-year, 100G production spec failed after 1,600 hours in scale-up rack thermal conditions, while a 1060nm device under identical conditions ran 5,000 hours unscathed. At ECOC 2026, Lumentum used one chart to show the VCSEL bottleneck was never speed—it is heat.

From 15 years at 10G to 4 years at 1.6T, the time for a data-rate generation to reach 10 million units has been cut again and again. At ECOC 2026, Lumentum laid out the numbers: half of module power goes to the DSP, only 24% of that DSP computes — and the real volume bottleneck is plugging in fibers.

The FCC wants to move optical module orders away from China, but the Western vendors taking those orders still grow their laser dies on substrates China approves for export. 6-inch InP is up 250% with a supply gap above 70% — de-Sinicization works at the module layer, but has no answer at the materials layer yet. This week's three earnings calls and OCP's CPO move point the same way: the decisive move has shifted down to indium phosphide.

Four industry heavyweights on one stage reached an unromantic consensus: demand isn't a bubble, technology isn't heading for a revolution, and the real battlefield is manufacturing. For Taiwan's supply chain, that means the winners will be decided by yield, process, and automation.

Optical interconnects are moving from the lab to the factory. NVIDIA and Lumentum have built the first production-ready DWDM laser array, with 7.2% wall-plug efficiency and per-channel power held within ±0.8 dB. More importantly, system-level simulation quantifies what actually drives optical link cost, as copper's ceiling makes the alternative an economic necessity.

In one week, TSMC moved CPO from slideware onto a production schedule, and Lumentum seized pricing power at the light source. Two narrow gates, TSMC COUPE capacity and 200G EML supply, now decide who gets to play in the 2026 1.6T cycle.

Lumentum doubled revenue and broke 50% gross margin ahead of plan, turning "optics replacing copper" into reported numbers. The real signal is not one quarter: it hit its target a quarter early and is set to raise its entire financial model. Here are the three numbers STT will watch next quarter: OCS, gross margin and ultra-high-power lasers.

At JPM's 54th Global Technology Conference, Lumentum sent three key signals: optical cyclicality is dead, a three-stage growth engine (1.6T, scale-out, CPO) is lined up, and InP is the real bottleneck. NVIDIA has locked a huge share of capacity while other hyperscalers queue for prepaid contracts — the next capacity-lock battleground after HBM.

AXT didn't just grow this quarter — it shifted gears. Record InP revenue of $30.7M lifted gross margin to 45% and flipped the company to profit. Supply is now the only ceiling: backlog tops $100M and this year's capacity target is raised to more than triple.