# Optical Transceivers Pluggable optics and optical networking for AI clusters. Theme: Photonics and optics (Technology). Page: https://thematiq.io/themes/photonics-and-optics/optical-transceivers/ ## Key facts - **The market: $4.4bn** IPoDWDM and disaggregated WDM systems only, a narrow sub-segment of optical transport (Dell'Oro Group, via Light Reading, 2030) - **The build: 2** of the 18 parts in the AI Supercycle bill of materials, each traced to the companies that supply it (ThematIQ research) - **The companies: 8** companies worth $368 billion, earning on average 78% of their revenue here (Annual reports and exchange data, 2026-10-28) ## What it holds Listed companies that earn their revenue supplying these parts of the AI Supercycle bill of materials, each read from its own reports. | Part | Covers | |---|---| | Interconnection Interface | optical transceivers | | Networking Equipment | optical networking equipment | ## Largest companies | Company | Listing | Market value | |---|---|---| | Coherent | COHR.XNYS | $47 billion | | Ciena | CIEN.XNYS | $52 billion | | Fabrinet | FN.XNYS | $13 billion | | Lumentum Holdings | LITE.XNAS | $82 billion | | Shandong Zhongji Electrical Equipment | 300308.SHE | $106 billion | | Suzhou TFC Optical Communication | 300394.SHE | $23 billion | | Eoptolink Technology | 300502.SHE | $38 billion | | Applied Optoelectronics | AAOI.XNAS | $7 billion | By listing country: United States 61%, China 39%. ## The market - Transceivers and related products such as AOCs, all applications, not only AI: $27bn (2025), LightCounting - Transceivers and related products such as AOCs, all applications, not only AI (growth, a year): +74% (2025 vs 2024), LightCounting - AI-cluster Ethernet optics, mostly 800G pluggables, including coherent and some LPO: $26bn (2026), LightCounting, quoted in Eoptolink SEC filing - Datacom optical components, revenue over $16 billion: $16bn (2025), Cignal AI - Datacom optical components, growth of 60%+ driven by 400G and 800G (a year): +60% (2025), Cignal AI - All optical transceivers, generic report: $14bn (2024), MarketsandMarkets - All optical transceivers, generic report (growth, a year): +13% (2024-2029), MarketsandMarkets - Forward-looking total addressable market for AI scale-up and scale-out optical components, not actual sales; appears to include transceivers: $154bn (2028 (end year uncertain; another source says 2027-2028)), Goldman Sachs Research - Optical transport (WDM and related systems), driven by data center interconnect spend, not AI-cluster optics: $16bn (2025), Dell'Oro Group, reported by Fierce Network - IPoDWDM and disaggregated WDM systems only, a narrow sub-segment of optical transport: $4.4bn (2030), Dell'Oro Group, via Light Reading The estimates differ mainly in scope: LightCounting's $26.8 billion for 2025 includes related products such as AOCs, Cignal AI's over $16 billion covers datacom optical components, and MarketsandMarkets' $13.6 billion for 2024 is a generic all-transceiver figure. Timing also matters, since the market grew about 74% in 2025, and Goldman Sachs' $154 billion is a forward-looking addressable market with an uncertain end year. ### What is Optical Transceivers? Pluggable optics and optical networking for AI clusters. ### What does Optical Transceivers hold? Listed companies that earn their revenue from the parts it takes to build AI Supercycle: Interconnection Interface, Networking Equipment. 8 companies as of 2026-10-28. ### What is not in Optical Transceivers? Standard and RDMA NIC adapters and controllers: Network Interface and Controller, not Networking Equipment; programmable SmartNICs and DPUs with onboard compute cores: Data Processing Unit (DPU), not Network Interface and Controller Pluggable optical transceivers, AOCs, DACs and AECs: Interconnection Interface, not Networking Equipment or Racks and Cable Management; long haul and DCI optical transport systems: Networking Equipment; passive fiber trunks, patch panels and structured cabling: Racks and Cable Management Finished Ethernet and InfiniBand switch systems: Networking Equipment, not Interconnection Interface; merchant switch ASICs and InfiniBand silicon sold as chips: Interconnection Interface, not Networking Equipment ## What it is not - Standard and RDMA NIC adapters and controllers: Network Interface and Controller, not Networking Equipment; programmable SmartNICs and DPUs with onboard compute cores: Data Processing Unit (DPU), not Network Interface and Controller - Pluggable optical transceivers, AOCs, DACs and AECs: Interconnection Interface, not Networking Equipment or Racks and Cable Management; long haul and DCI optical transport systems: Networking Equipment; passive fiber trunks, patch panels and structured cabling: Racks and Cable Management - Finished Ethernet and InfiniBand switch systems: Networking Equipment, not Interconnection Interface; merchant switch ASICs and InfiniBand silicon sold as chips: Interconnection Interface, not Networking Equipment - High speed copper backplanes, scale up cable cartridges and high speed connectors: Interconnection Interface, not Racks and Cable Management - NVLink and other scale up switch chips: Interconnection Interface, not Graphics Processing Unit (GPU) - PCIe and CXL retimers and switches: Motherboard Interface, not Interconnection Interface; Ethernet and optical DSPs and standalone SerDes IP: Interconnection Interface - Custom accelerator design services and IP embedded in AI ASICs: Graphics Processing Unit (GPU), not Interconnection Interface; standalone SerDes IP licensing: Interconnection Interface Data as of 2026-10-28. Source: ThematIQ (industry research, company filings, exchange data), ETFIQ (fund counts), and the publishers linked above. Not investment advice.