GF Fotonix — PDK customers and design-license users

Updated: 2026-04-29 Status: ✓ Customer list verified via GF press releases, customer co-disclosures, peer-reviewed papers, and SemiAnalysis industry reporting; deal mechanics flagged where partial. Cross-references: Fotonix process overview · Process roadmap · customers photonics

1. Customer-set framing

GF Fotonix customers fall into four engagement archetypes:

Productized PDK users (foundry-only relationship) — the customer designs against the publicly available Fotonix PDK and tapes out at GF’s Fab 8 in Malta NY. No special process customization, no GF engineering co-development. Examples: Lightmatter (9WG), early Ayar Labs work, Enosemi.
Co-development partners (custom modules + standard PDK) — the customer + GF jointly extend the Fotonix process to add a customer-specific photonic device or material. Examples: Lightwave Logic (slot-waveguide-optimized polymer integration), NLM Photonics (silicon-organic hybrid extension on AMF / Fotonix follow-on), Marvell (custom modulator topologies + SiGe BiCMOS-class driver integration).
Captive-volume strategic customers — large fabless silicon companies that book significant Fotonix capacity for productized merchant transceivers / chiplets. Examples: Marvell (post-Inphi), Broadcom (Tomahawk-class CPO), NVIDIA (post-Mellanox optical interconnect line).
Quantum / specialty integrators — using Fotonix’s low-loss waveguide library for photonic-quantum architectures. Examples: PsiQuantum, Xanadu.

The publicly disclosed customer list draws on the GF launch press release (2022-03-08), the SemiAnalysis Fotonix deep-dive (newsletter.semianalysis.com) ◐, and individual customer press releases.

2. Lightwave Logic — commercial PDK live since March 2026

Field	Value
PDK live	2026-03-16 (GDSFactory PDK release)
Engagement type	Co-development — slot-waveguide structure optimization for EO-polymer fill
Material	LWLG Perkinamine electro-optic polymer family, BEOL-deposited and poled
Validation tape-out targets	200 G/lane and 400 G/lane PAM4
Volume / first-silicon timeline	Validation tape-outs scheduled in 2026; volume ramp 2027
Source	Stocktitan LWLG-GF press release (2026-03-16) ✓

The LWLG-Fotonix integration is the most commercially advanced productized EO-polymer + commercial SiPh foundry combination. The PDK release was published via GDSFactory (an open-source PDK ecosystem), enabling third-party photonic-IC designers — not just LWLG and GF directly — to instantiate LWLG polymer modulators in their Fotonix tape-outs.

GF separately disclosed it is “optimizing its 300mm process for advanced slot waveguide structures” to support the LWLG modulator architecture (Stocktitan) — i.e., GF is making process modifications, not just adding a PDK cell, which moves the relationship from a productized-PDK to a co-development engagement.

Cross-reference: the LWLG side of the agreement is documented in platform overview §Foundry-PDK status (Apr 2026) — confirming PDK live 2026-03-16, GDSFactory PDK, 200G/400G per lane, validation tape-outs scheduled.

3. NLM Photonics — silicon-organic hybrid sampling on AMF (Fotonix follow-on)

Field	Value
Sampling announced	2026-03-16 (NLM Photonics press release) ✓
Initial process	AMF GP Process (200mm, Singapore) for first-generation 1.6T / 3.2T PICs
Second-generation process	AMF HP Process; AMF HP PDK 6.0 in development
Material	NLM Selerion-HTX organic electro-optic material
Performance claim	110+ GHz bandwidth, 40% smaller form factor than typical 1.6T PICs
Engagement type	Foundry manufacturing services + PDK co-development + technology validation
GF executive lead	Michael Reiha, VP Silicon Photonics Business
Showcase venue	OFC 2026 (Mar 17-19, Los Angeles)

NLM Photonics is the second commercial EO-polymer integrator after LWLG but is positioned on the AMF process line (acquired by GF Nov 17 2025) rather than directly on the Fotonix Malta line. The implication: NLM is using GF post-AMF capacity, validating that the AMF acquisition is being integrated commercially within the first six months of close.

The NLM press release is significant because it confirms two GF-side facts:

AMF has a GP (general-purpose) and HP (high-performance) process tier on its 200mm line, with HP being the more advanced node where NLM’s second-gen integration is targeted.
GF is actively developing the HP PDK 6.0 as a successor — meaning AMF’s PDK is being modernized to GF’s standard, not frozen at the legacy AMF-Singapore release.

The NLM-on-AMF path is a competing modulator chemistry to LWLG’s Perkinamine on Fotonix — the two are partly substitutable but Selerion-HTX claims a higher r33 (1000 pm/V per NLM June 2025 release) versus LWLG’s typical 100-200 pm/V chromophore class. Customer chemistry preference is the load-bearing variable for which company wins which design slot.

⚠ Open question: whether NLM also has a Fotonix 45SPCLO integration path beyond AMF. Public disclosure as of 2026-03-16 emphasizes AMF; whether NLM can move to Fotonix without re-PDK-validation depends on AMF process-PDK harmonization timeline.

4. Marvell — captive-volume photonics customer post-Inphi + post-Polariton

Field	Value
Engagement type	Productized PDK + custom-foundry agreements; volume-strategic
Product set	Inphi-lineage 100/200/400 G PAM4 SiPh DSPs + Marvell-architected silicon-photonics light engine
Post-Polariton path	Plasmonic-organic-hybrid (POH) modulator integration following 2026-04-22 Polariton acquisition
DSP node	TSMC 5/3 nm (separate die); SiPh on GF Fotonix
Source	Marvell investor materials, Marvell Ara DSP awards 2025; SemiAnalysis Fotonix article ◐

Marvell’s optical-transceiver business — built on the Inphi acquisition and the more recent Polariton acquisition (2026-04-22) — is one of the highest-volume Fotonix customers. The architecture:

Optical DSP (Marvell Ara, Ara X, Spica, Petra family) on TSMC 5/3 nm (per foundry relationships) ✓
Silicon-photonics modulator + photodetector on GF Fotonix
SiGe BiCMOS driver / TIA historically separate, increasingly monolithic on Fotonix
POH plasmonic-modulator IP (Polariton) — integration target for the 3.2 Tbps and beyond roadmap

The Polariton-Fotonix integration is the most consequential live integration question. Polariton’s plasmonic-organic-hybrid platform requires plasmonic metal slot waveguides + EO polymer fill — both of which are processable on a Fotonix-class flow but require process customization. Marvell now owns the modulator IP, owns the DSP, and is the foundry’s largest single transceiver-volume buyer — putting Marvell in a strong position to dictate Fotonix process roadmap.

Cross-reference: the Marvell KB (polariton acquisition) treats this as accelerating Marvell’s POH commercialization 12-18 months vs licensing/partnership; the Fotonix process modification needed for POH is the critical path.

⚠ Specific Marvell-GF wafer-volume commitments are not publicly disclosed.

5. Ayar Labs — TeraPHY UCIe optical-I/O chiplet

Field	Value
Product	TeraPHY optical I/O chiplet, UCIe-compliant
Light source	Ayar Labs SuperNova 16-wavelength external comb laser
Process	Fotonix 9WG (90 nm SiPh node) ⚠ specific 9WG vs 45SPCLO usage to verify
Throughput	4 Tbps current generation; 8 Tbps next-gen using UCIe construct (announced 2025-03-31)
Sampling status	”Thousands of engineering samples” shipped per Contrary Research profile ◐
Volume timeline	Commercial offerings 2026-2028
Source	Ayar Labs UCIe announcement (2025-03-31) ✓

Ayar Labs is the highest-profile chiplet-architecture Fotonix customer. The TeraPHY chiplet integrates on a host AI accelerator package (CPU, GPU, AI ASIC) via the UCIe (Universal Chiplet Interconnect Express) standard — providing optical I/O at the chiplet boundary instead of at the package boundary. This is architecturally distinct from CPO (which integrates the optical engine onto the switch ASIC substrate) and architecturally distinct from pluggables (which sit at the front-panel cage).

Ayar Labs is a Fotonix customer, not a Fotonix competitor — every TeraPHY shipment generates Fotonix wafer demand. The volume ramp is commercially significant because UCIe optical I/O is positioned as the connectivity layer for scale-up AI fabrics (NVL72-class racks and beyond).

Strategic customers funding Ayar Labs (per public disclosures) include NVIDIA, Intel, Microsoft, AMD-investment (Ayar Labs corporate page) — making Ayar Labs an indirect channel for those buyers’ optical-interconnect demand to land at Fotonix.

6. Lightmatter, Ranovus, PsiQuantum, Xanadu — productized-PDK customers

Per the SemiAnalysis Fotonix article ◐:

Customer	Use case	Fotonix node	Status
Lightmatter	Tensor-core photonic-electronic AI accelerator (Mars / Envise / Passage architectures)	9WG (volume); 45CLO products in development	Volume customer; multi-product roadmap
Ranovus	Co-packaged optics chiplets, photonic IP licensing	Fotonix	Productized customer
PsiQuantum	Photonic quantum computer, fault-tolerant cluster states on photonic IC	Fotonix (low-loss waveguides)	R&D → pilot production
Xanadu	Continuous-variable photonic quantum computer	Fotonix (low-loss waveguides)	R&D → pilot production
Enosemi	Silicon-validated electronic-photonic design IP for Fotonix	Fotonix	IP licensing / design enablement, not direct tape-out customer

Lightmatter is the most commercially material of these — they ship photonic-electronic AI inference accelerators that compete in the AI-silicon accelerator market alongside NVIDIA, Cerebras, Groq, and TPU programs. Ranovus is the most diversified with both productized chiplets and a photonic-IP licensing motion. PsiQuantum and Xanadu are pre-commercial but high-strategic-importance because they validate Fotonix’s reach beyond datacom into quantum.

7. NVIDIA, Broadcom, Cisco — strategic customers (less-public detail)

The GF press releases and SemiAnalysis coverage list NVIDIA, Broadcom, Cisco, Macom as Fotonix-engaged but with less granular public detail:

NVIDIA — designing optical interconnects for HPC/AI networking, post-Mellanox photonic IP roadmap. Fotonix engagement is one of multiple foundry options NVIDIA evaluates.
Broadcom — Tomahawk-class CPO is the highest-volume CPO product line in 2024-2025. Broadcom’s specific Fotonix volume vs internal-IP / TSMC-SiPh routing is not fully public.
Cisco (Acacia + Luxtera lineage) — silicon-photonics IP integration, likely productized-PDK use.
Macom — datacom modulator drivers; could be either a direct Fotonix customer or a CMOS supplier integrated into Fotonix-fabbed photonic engines via separate die. ⚠ Specific role not fully primary-sourced.

For these strategic customers the SemiAnalysis source ◐ is the best-available secondary aggregation; GF press releases name them but do not detail wafer commitments.

8. Engagement-stage summary table

Customer	Stage (as of 2026-04-29)	Volume timeline
Lightwave Logic	PDK live; validation tape-outs 2026	Volume 2027
NLM Photonics	Sampling on AMF GP; HP PDK 6.0 in dev	Volume 2027+
Marvell (Inphi-lineage SiPh)	Production volume now	Continues
Marvell (Polariton POH integration)	Pre-PDK; process-modification phase	12-18 months from Apr 2026 (per MRVL KB)
Ayar Labs (TeraPHY)	Engineering samples shipping	Commercial 2026-2028
Lightmatter	Production volume now (9WG); 45CLO products in dev	Continues + dev pipeline
Ranovus	Productized	Continues
PsiQuantum / Xanadu	R&D / pilot	Quantum-commercial timeline (2027+)
NVIDIA / Broadcom / Cisco	Production / co-development	Continues
Enosemi	Design-IP licensee	N/A (not a tape-out customer)

9. Open audit items

⚠ Wafer-volume commitments per customer — not publicly disclosed.
⚠ Marvell-Fotonix POH process customization timeline — Polariton acquisition closed Apr 22 2026; integration timeline not yet disclosed.
⚠ NLM Photonics’ Fotonix (vs AMF-only) status — unclear whether second-gen integration is AMF-HP-only or extends to Fotonix Malta.
⚠ Specific Fotonix node usage by Lightmatter, NVIDIA, Broadcom — 9WG vs 45SPCLO breakdown not fully public.
⚠ Cisco-Fotonix engagement maturity — Cisco’s Luxtera SiPh IP is internal; whether Cisco taps Fotonix for merchant or only internal use is uncertain.

Cross-references

Fotonix process overview — what’s in the PDK
AMF Singapore acquisition — NLM is on the AMF side
Process roadmap — when each customer’s first-silicon ships
customers photonics — ecosystem-side view
customer roadmaps — timeline integration