{"schema_version":"2026-09-05.topic-graph-v1","canonical_url":"https://www.manufacturing.ai/topics/co-packaged-optics","topic":{"slug":"co-packaged-optics","name":"Co-Packaged Optics: Moving Light Into the Package","description":"A sourced reference collection on co-packaged optics — why AI networking is pulling optical conversion inside the chip package, what the power savings actually measure, and which problems still stand between sampling and deployment.","coverage_notes":"Sixth packet through the generic ingestion pipeline, rebuilt in September 2026 to the reference-collection template and reweighted toward what is shipping now rather than toward the technology's development history. (August 2026 original.) Four sources were directly retrieved and three are recorded as references only: Broadcom's own investor-relations release and EDN's 2026 status survey both timed out repeatedly, and Semiconductor Engineering returned HTTP 403 for the second session running. Because EDN could not be read, the independent survey of what is actually shipping is missing, and deployment status here rests on vendor statements — marked as such on every assertion. Broadcom's figures reach this collection through a syndicated reproduction rather than from Broadcom's own site, which is recorded rather than glossed. The widely-repeated 'one million link hours at Meta' reliability figure is deliberately absent: Broadcom's release references a link flap study without giving test hours or naming the testing entity, so it is not asserted. This collection is concept-heavy and carries a single dated event, which is a truthful reflection of a technology at the sampling stage rather than a gap — announced availability windows are recorded as vendor claims, never promoted into events. Not yet editor-reviewed; every assertion reads as reported.","primer":"Every optical link in a data centre converts electricity into light and back again, and for twenty years that conversion happened in a module you could pull out of the front of the switch with your fingers. Co-packaged optics moves it inside the package, next to the switch silicon. The reason is power: an independent engineering account puts co-packaged optics at roughly 5.5 watts per 800 Gb/s port against about 15 for equivalent pluggables — around threefold, or 6 to 7 picojoules per bit. At the port counts modern switches carry, that difference stops being an efficiency argument and becomes a thermal one.\n\nIn 2026 this stopped being a sampling technology. Broadcom announced Tomahawk 6 – Davisson on 8 October 2025, a third-generation co-packaged Ethernet switch at 102.4 Tbps and 200 Gbps per channel using TSMC COUPE optical engines. NVIDIA states two lines of its own: a Quantum-X InfiniBand Photonics switch at 144 ports of 800 Gb/s, which it says connects over 10,000 GPUs in a two-level fat-tree, and Spectrum-X Ethernet Photonics at up to 409.6 Tb/s, stated as available in the second half of 2026.\n\nRead the vendor ratios carefully, because this collection does not repeat them. NVIDIA publishes 5x better power efficiency than pluggables, 5x sustained AI application runtime and 1.3x faster time to insight, all without a stated baseline configuration. Those are claims. The independently reported watts-per-port figure above is what this page asserts.\n\nWhat is given up is the thing that made pluggables popular in the first place. A faceplate module can be swapped in minutes, and an operator can choose the optics per port. Once the optical engine is inside the package, a failure is a package-level failure, and the constraints that remain are argued to be systems-level rather than device-level: standardisation across platforms, serviceability, and thermal-aware photonic-electronic co-design. Those are organisational problems as much as physical ones, which is usually a sign that a technology arrives slower than its performance numbers suggest.\n\nThis page is concept-heavy and carries few dated events, and that is a truthful reflection of where the technology sits rather than a gap in the research: announced availability windows are recorded as vendor claims and never promoted into events. What is missing is named — an independent survey of what is actually shipping could not be retrieved, so deployment status here rests on vendor statements, marked as such on every assertion; Broadcom's figures reach this collection through a syndicated reproduction rather than its own site; and the widely-repeated one-million-link-hours reliability figure is deliberately absent, because the release referencing it gives neither test hours nor the testing entity.","primer_note":"Manufacturing.ai's own editorial synthesis, not evidence. Every factual statement in it is separately asserted and sourced in this response's concepts and events.","reviewed_through_date":null,"source_count":4,"inspected_source_count":4,"consulted_reference_count":7,"blocked_reference_count":4,"set_aside_reference_count":3},"figures":[{"kind":"time-series","title":"The power the package saves","caption":"Watts per 800 Gb/s port. This is the independently reported comparison, not a vendor ratio — the difference is about threefold, or 6 to 7 picojoules per bit.","sourceNote":"The independent engineering account cited on this page, which gives roughly 5.5 W per 800 Gb/s port for co-packaged optics against about 15 W for equivalent pluggables. Reported measurements, not a vendor comparison; the larger ratios vendors publish carry no stated baseline and are excluded.","unit":"Watts per 800 Gb/s port","points":[{"label":"Pluggable optics","value":15,"display":"~15 W"},{"label":"Co-packaged optics","value":5.5,"display":"~5.5 W"}]},{"kind":"time-series","title":"Switch bandwidth behind the optics","caption":"Stated switch capacity for the two co-packaged platforms this page covers. The second figure is a vendor statement for a product with an announced availability window.","sourceNote":"Broadcom's Tomahawk 6 – Davisson announcement of 8 October 2025 (102.4 Tbps), reaching this collection through a syndicated reproduction, and NVIDIA's silicon photonics product page (up to 409.6 Tb/s, stated available in the second half of 2026). Both are vendor-stated capacities.","unit":"Switch bandwidth, Tb/s","points":[{"label":"Tomahawk 6 – Davisson","value":102.4,"display":"102.4 Tb/s"},{"label":"Spectrum-X Photonics","value":409.6,"display":"409.6 Tb/s"}]}],"blocked_references":[{"title":"All AI Data Center Interconnects Will Be Optical Within 5 Years","publisher":"Semiconductor Engineering","url":"https://semiengineering.com/all-ai-data-center-interconnects-will-be-optical-within-5-years/","source_type":"journalism","retrieval_status":"blocked_403","content_inspected":false,"published_at":null},{"title":"Broadcom Announces Tomahawk 6 – Davisson (investor relations original)","publisher":"Broadcom Inc.","url":"https://investors.broadcom.com/news-releases/news-release-details/broadcom-announces-tomahawkr-6-davisson-industrys-first-1024","source_type":"press_release","retrieval_status":"timeout","content_inspected":false,"published_at":null},{"title":"Intel Foundry — Advanced Packaging (EMIB, 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