SOI substrate monopoly for silicon photonics engines

Focus companies in this thesis (1)

• Soitec (SOI)

Supply-chain categories covered

• InP & Substrates — Indium phosphide (InP) wafers and engineered compound-semiconductor substrates for high-speed RF, photonic and optoelectronic devices (lasers, photodetectors, HBTs). Producers are substrate/epi suppliers (AXT, IQE, Sumitomo Electric); buyers are photonics and RF chip makers.
• Silicon Photonics — Photonic integrated circuits fabricated on silicon and silicon-on-insulator substrates — modulators, photodetectors, waveguides, grating couplers — used mainly in optical transceivers for data-center and telecom interconnects, with growing roles in co-packaged optics, LiDAR, and biosensing.
• Optical Transceivers — Optical modules for data center and telecom interconnects
• Network Switches & Routers — Data center and enterprise networking equipment
• Hyperscalers — Major cloud operators (AWS, Azure, GCP, Meta, Oracle, Alibaba, Tencent, Baidu, Naver) and tier-2 / neocloud providers (DigitalOcean, OVHcloud, Rackspace, Kingsoft) tracked as a demand signal across multiple theses (photonics, HBM, AI accelerators, power, cooling). Excludes SaaS apps, telcos, REITs, and IT services firms.
• Silicon Wafers — Raw silicon wafer manufacturing and supply

Thesis milestones & bottleneck markers

• $SOI Photonics Revenue Milestone — SOI — Photonics segment reaches €300M annual revenue
• Silicon Photonics Market Share — Silicon photonics captures 20% of datacenter optics
• Hyperscaler CPO Deployments — First major CPO deployments at scale
• $SOI Stock Price Target — SOI

Related baskets

• InP & Substrates

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Frequently asked questions

What is the SOI substrate monopoly for silicon photonics engines thesis about?

**Bottleneck theme:** InP & Substrates **Focus:** $SOI — Soitec Soitec is the global monopoly in SOI (silicon-on-insulator) substrates and is positioned as a critical supplier to the silicon-photonics build-out. Every silicon-photonics engine — pluggable transceiver, CPO, Lightmatter/Ayar-style reticle-scale interposer — needs a high-quality SOI wafer with a precisely engineered buried-oxide layer. Soitec's Smart Cut process and decades of substrate engineering experience give it ~80%+ market share in SOI for advanced applications, with no credible alternative supplier outside Asia. The thesis is two-pronged: (1) silicon-photonics SOI demand is growing fast as 800G→1.6T→3.2T optics shift to silicon; (2) Soitec's traditional RF-SOI franchise (smartphones) provides a stable cash-cow base. Risks include consumer-electronics RF-SOI cyclicality, China substrate competition (NSIG, Simgui working to qualify SOI domestically), and customer concentration with a few large foundries (TSMC, GlobalFoundries) and integrated photonics players. EU-listed, lower trading liquidity than US peers — treat as a structural pure-play on SOI substrate scarcity.

Which companies does the SOI substrate monopoly for silicon photonics engines thesis focus on?

The SOI substrate monopoly for silicon photonics engines thesis on Macroplane focuses on Soitec (SOI).

Which supply-chain categories does the SOI substrate monopoly for silicon photonics engines thesis cover?

It covers InP & Substrates, Silicon Photonics, Optical Transceivers, Network Switches & Routers, Hyperscalers, Silicon Wafers.