Industrialising intelligence
Building Europe's full stack, mass scale III-V fab.
Building Europe's full stack, mass scale III-V fab.
Building Europe's full stack, mass scale III-V fab.
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Why we exist
What Thema is
AI data centres are becoming densely connected compute systems. The network is now a major part of the infrastructure, and copper is reaching its limits as bandwidth demand rises. Optical links are moving deeper into the cluster, driving rapidly growing demand for photonic devices. Thema is building the missing manufacturing layer: a full stack III-V foundry that takes customer specifications through epitaxy, fabrication, singulation, burn-in and test at mass scale.
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What we do
Full stack III-V Fab
One partner for III-V industrialisation. The customer-owned product definition stays connected to one process and one manufacturing data thread.
01
Design
Customer optics become a laser and waveguide layout, built for 6-inch volume production from the start.
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6-INCH DESIGN RULES
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BUILT FOR VOLUME
02
III-V epitaxy
MOCVD epitaxy grows GaAs quantum-dot and InP laser material: around 50,000 lasers per 6-inch wafer.
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MOCVD EPITAXY
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~50,000 LASERS / WAFER
03
Processing
Lithography, etching and deposition turn the grown material into laser structures across the full wafer.
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ISO CLASS 3
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WAFER-SCALE
04
Metallisation
Metal contacts are deposited so every laser on the wafer can be driven electrically.
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ELECTRICAL CONTACTS
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LOW RESISTANCE
05
Singulation
The wafer is separated into individual laser dies. Facet quality decides how cleanly each laser emits.
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ONE WAFER, THOUSANDS OF DIES
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PRECISION FACETS
06
Burn-in and test
Wafer-level test and burn-in. Known-good die, qualified for telecom and hyperscale supply chains.
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WAFER-LEVEL BURN-IN
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KNOWN-GOOD DIE
01
Design
02
III-V epitaxy
03
Processing
04
Metallisation
05
Singulation
06
Burn-in and test
01
Design
Customer optics become a laser and waveguide layout, built for 6-inch volume production from the start.
░░
See the foundry
6-INCH DESIGN RULES
░░
See the foundry
BUILT FOR VOLUME
01
Design
02
III-V epitaxy
03
Processing
04
Metallisation
05
Singulation
06
Burn-in and test
01
Design
Customer optics become a laser and waveguide layout, built for 6-inch volume production from the start.
░░
See the foundry
6-INCH DESIGN RULES
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See the foundry
BUILT FOR VOLUME
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The Metrics
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5,000 m²
ISO 3
cleanroom
7,000 m²
ISO 7
cleanroom
19 MW
Installed,
energised
45,000 m²
site,
Oudenaarde
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The Metrics
5,000 m²
ISO 3
cleanroom
19 MW
Installed,
energised
45,000 m²
site,
Oudenaarde
7,000 m²
ISO 7
cleanroom
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The Metrics
5,000 m²
ISO 3
cleanroom
19 MW
Installed,
energised
45,000 m²
site,
Oudenaarde
7,000 m²
ISO 7
cleanroom
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See the foundry
The Foundry
Inside the foundry
Forty years of manufacturing heritage. Permits, power and cleanroom already in place.
