One of the most interesting parts of $LITE’s latest earnings call was not the growth rate itself, but the commentary around Scale Across.
$CIEN Ciena -- coherent DSP, NPO/CPO, FST, Scale Across, DCI
$CSCO Cisco / Acacia -- coherent pluggables, 800G DSP, coherent transmission
$NOK Nokia -- 1.6T coherent, Coherent-Lite, InP/SiPh PIC, Scale Across transport
$MRVL Marvell -- 1.6T coherent DSP, 2nm DSP, optical connectivity silicon
$AVGO Broadcom -- 400G/lane DD-EML, InP laser, DSP, CPO, switch ASIC
$COHR Coherent--InP EML/PD, 400G/lane optics, SiPh, coherent components
$TSEM Tower Semiconductor -- silicon photonics foundry, PH18 SiPho, 400G SiPh MZM
6503.T Mitsubishi Electric -- high-speed InP EML, 400G/lane device technology
Lumentum said that, for one hyperscaler, the network capacity required to connect just two AI data centers is roughly twice the capacity of the entire global backbone it built over the previous decade.
And Lumentum explicitly described this as Scale Across.
That immediately reminded me of the six OFC 2026 papers I analyzed back in April.
The direction I saw then was fairly simple.
400G/lane IM-DD is becoming technically feasible at the component level, but the real challenges are moving toward link budget and power. On the coherent side, 1.6T pluggables are running into a similar wall as lasers, drivers, DACs and DSPs all have to fit within a roughly 35–40W power envelope.
At the same time, NPO and CPO pull client optics closer to the switch ASIC. As that happens, coherent line optics can increasingly move back outside the router and into the transport layer. Coherent-Lite and full-band transponders are particularly interesting in Scale Across, where the network expands from building-to-building to campus-to-campus and ultimately data-center-to-data-center.
Back in April, much of this was still visible mainly through conference papers, architecture proposals and roadmaps.
Now earnings calls are beginning to show the actual hyperscaler demand behind that architecture.
AI networking is no longer just about connecting GPUs or racks. The data centers themselves are becoming the nodes.
I covered this transition in detail in my OFC 2026 Part 4 review, connecting 400G/lane IM-DD, 1.6T coherent, CPO/NPO, Coherent-Lite and full-spectrum transport.
photoncap.net/p/ofc-2026-par…
[OFC 2026] Part 4 of 5: 400G/Lane and 1.6T Coherent — Two Fronts, One Power Wall
Six papers from $AVGO, $CSCO, $COHR, $CIEN, $NOK. Zero measured link demos.
Broadcom's 99 GHz DD EML? Open eye only — no BER, no TDECQ.
Coherent Corp's 400G link budget? The 5 dB number everyone
[Exclusive] Singapore's Temasek to Buy Into Samsung, SK Hynix… Its First Ever Investment in Korean Stocks
Temasek, one of Asia's largest sovereign wealth funds, is making a new investment in Samsung Electronics and SK Hynix. This marks the first time Temasek has invested in the Korean stock market.
(..)
Temasek is said to hold the view that within the artificial intelligence (AI) value chain, memory semiconductors are the most undervalued area. An investment banking (IB) industry source said, "Temasek has an investment style of deploying large amounts of capital into industries that lead the market, from a long term perspective," adding, "Samsungnix has risen as much as more than 880% from last year's low, but this shows conviction that it will go higher still."
SOX dipped to 11867 today, which is a critical low from 06/09 and 07/07.
I will give it 1-2 days to reclaim the 50d EMA. Otherwise, I have to stop out any non-Mag7 positions.
My thoughts are that semis should remain in a consolidation range instead of any directional breakout before the Mag7 ER, as bulls and bears are debating AI capex and ROI heavily with some balance.
Any breakout of the range before the Mag7 ER means the market has reached some weird consensus for reasons we don’t know, and we should be very cautious.
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