Coherent (COHR)

Vertically-integrated laser + optical module supplier — the only AI-optics public name with in-house Indium Phosphide laser fabrication, with a $2B NVIDIA strategic stake to back the CPO transition.

1. Core Product / Service

Coherent (NYSE: COHR) is a vertically-integrated photonics company assembled from the 2022 merger of II-VI and the legacy Coherent laser business. Three reporting segments, with the AI exposure concentrated in Networking (sometimes reported as "Datacenter & Communications"):

• Networking — 400G/800G/1.6T pluggable transceivers, co-packaged optics (CPO) building blocks (lasers, photonic engines), DCI / coherent transponders, and the underlying InP / GaAs / SiC compound-semiconductor wafer fabs
• Materials — silicon carbide (SiC) substrates for power electronics; gallium arsenide; rare-earth crystals
• Lasers — industrial lasers, instrumentation, medical/aesthetic lasers (legacy Coherent business)

The strategic edge is vertical integration: Coherent owns the InP wafer fabs that produce the EML (electro-absorption modulated lasers) and CW (continuous-wave) lasers that go inside its own 800G/1.6T transceivers — and that it also sells to competitors as a merchant chip. Roughly 75% of Q3 FY2026 revenue came from datacenter and communications — Coherent is a "datacom company with a lasers and SiC side business" at this point.

2. Target Users & Pain Points

• Hyperscalers and cloud titans — Microsoft, Meta, Google, AWS, Oracle directly procure 800G/1.6T optical modules
• Switch OEMs — arista, Cisco, Juniper, Nokia (modules go into their switches)
• NVIDIA — direct strategic supplier for both pluggable optics and the CPO transition; NVIDIA invested $2B in Coherent (March 2026) [4][5][6]
• Industrial / medical / scientific — for legacy laser business

Pain solved: the only supplier that can credibly scale Indium Phosphide laser output for 800G→1.6T→CPO without depending on competitors. As the industry transitions from pluggable to CPO (co-packaged optics), whoever owns the laser fab capacity wins.

3. Competitive Landscape

Coherent's edge: InP fab capacity ownership + NVIDIA capital and capacity-priority commitment + broader Materials + Lasers business that smooths the cyclicality. Disadvantage: less concentrated on AI optics than innolight (laser/SiC dilution).

4. Unique Observations

• Section 4 focus — 1 MW build-cost share: optical modules consume 600-900 per 1 MW cluster (120 GPUs × 6 optics each), at $800-1500 per module = ~$0.6-1.4M/MW. Coherent's share depends on the bill of materials: in NVIDIA reference platforms with Coherent optics, **40-60% of the optics line** can flow to Coherent → ~$0.3-0.8M/MW, or 2-4% of total build cost. As CPO replaces pluggable from 2027 onward, Coherent's per-MW content grows because the laser engines become more concentrated/value-dense.
• Q3 FY2026 financials (quarter ending March 2026): revenue $1.81B (+21% YoY, +27% pro forma) [1][2][3]. GAAP gross margin 37.7% (+243 bps YoY); non-GAAP gross margin 39.6%; non-GAAP EPS $1.41 [1]. Q4 guidance $1.91-2.05B revenue, non-GAAP EPS $1.52-1.72 [1].
• Datacom share: Networking + Datacenter segment $1.4B in Q3 (vs $1.0B prior-year), now 75% of total company revenue [3]. The company has effectively been remade in 4 years from "lasers + materials" to "AI optics with two side businesses." (Note: L1a research notes used FY2025 ~$5.8B as a calibration baseline; current Q3 run-rate already implies a much higher FY2026 finish.)
• NVIDIA $2B equity investment — announced March 2026 [4][5][6]. Structured as: equity + multi-year supply agreement extending through end of the decade + CPO co-development. Specifically tied to scaling Indium Phosphide capacity — NVIDIA's bet that the bottleneck for 1.6T and CPO is InP laser-chip supply, and that paying upfront secures priority access.
• InP capacity ramp: Coherent now expects to double InP capacity by next quarter (one quarter ahead of plan), then double again by end of 2027 [6]. All incremental capacity on 6-inch wafers (yields already exceeding the legacy 3-inch lines). This is the most concrete "supply-side response to AI bottleneck" in the entire optics complex.
• CPO revenue timeline (key): management guided scale-out CPO revenue to begin H2 calendar 2026; scale-up CPO from H2 2027 [6]. This is the industry transition: today's 800G/1.6T pluggable transceivers eventually get replaced by optics co-packaged with the switch ASIC (Tomahawk / Spectrum-X). Coherent is positioned to win both eras — pluggable today, CPO laser modules tomorrow — because the underlying laser-chip technology carries forward.
• AI revenue concentration: with 75% of revenue from datacom and NVIDIA as a strategic owner + customer, Coherent is effectively a 70-80% AI-revenue concentrated company. Risk: an NVIDIA InfiniBand/Mellanox capex pause hits Coherent more than a diversified peer.
• AI Lab binding: not labs directly — Coherent's path to AI labs runs through hyperscalers (meta, microsoft-azure, Google, oracle-cloud) and through nvidia's reference designs (GB200/GB300 NVL72 use Coherent optics). The $2B NVIDIA equity stake is the strongest formal binding any optics vendor has.
• Token cost chain — the "shovel seller": Coherent sits in L1 A.d (networking — optical modules + InP laser chips). Every photon carrying a tensor between two GPUs on a hyperscale fabric was emitted by a laser fabricated in an InP fab — Coherent owns one of the largest such fab footprints. As 800G transceivers transition to 1.6T (and eventually CPO), the per-MW laser content grows: more lanes, higher channel counts, more lasers per module.

5. Financials / Funding

• Listed: NYSE: COHR (II-VI / Coherent merger 2022)
• Q3 FY2026 revenue: $1.81B (+21% YoY) [1][2]
• Q3 FY2026 datacenter & communications revenue: $1.4B (vs $1.0B YoY) [3]
• Q3 FY2026 GAAP gross margin: 37.7% (+243 bps) [1]
• Q3 FY2026 non-GAAP gross margin: 39.6% [1]
• Q3 FY2026 GAAP EPS: $0.97; non-GAAP EPS: $1.41 [1]
• Q4 FY2026 revenue guide: $1.91-2.05B [1]
• Q4 FY2026 non-GAAP EPS guide: $1.52-1.72 [1]
• FY2025 revenue (prior-year reference): $5.8B [calibration: L1a_equipment_suppliers.md]
• NVIDIA equity investment: $2B (March 2026) + multi-year supply agreement [4][5][6]
• InP capacity plan: doubling by next quarter, doubling again by end of 2027 [6]

6. People & Relationships

• CEO: Jim Anderson (since 2025)
• CFO: Sherri Luther
• HQ: Saxonburg, Pennsylvania
• Formed: 2022 via II-VI's $7B acquisition of legacy Coherent; renamed Coherent Corp.
• Strategic investor & customer: nvidia (~$2B equity, March 2026)
• Major customers: Microsoft, Meta, Google, AWS, Oracle directly; arista, Cisco, Juniper indirectly via switches
• Strategic supplier dependency: tsmc for some silicon photonics; own InP and SiC fabs internally
• Strategic context: viewed as the vertically-integrated optics champion — the alternative thesis to innolight's volume-king play