# Who does Coherent pay? Who are its key suppliers?
Canonical: https://valuechain.wiki/coherent · Facet: suppliers · Updated: 2026-07-12T03:55:46.023815+00:00 · Source: ValueChain.wiki (cited money-flow graph)

**Citable summary**: Coherent's confirmed suppliers/cost counterparties include Fabrinet, Tower Semiconductor, MACOM plus 2 undisclosed/aggregate relationships. Per the valuechain.wiki graph: 5 cost edges, backed by 6 dated sources, 2 of them primary filings (as of 2026-07-12).

### Fabrinet (high)  → /fabrinet.md
- note: Outsources optical-module manufacturing to Fabrinet.
- [confirms] MatrixBCG (EN, research, published 2026-01-01) https://matrixbcg.com/blogs/how-it-works/fabrinet: "Outsources optical-module manufacturing to Fabrinet."
- [confirms] SEC EDGAR (EN, filing, published 2025-08-18) https://www.sec.gov/Archives/edgar/data/0001408710/000140871025000036/fn-2025818xex991q425.htm: "Outsources optical-module manufacturing to Fabrinet."

### Tower Semiconductor (high)  → /tower-semiconductor.md
- note: Sources SiPho/SiGe from Tower foundry for transceivers.
- [confirms] TipRanks (EN, research, published 2025-11-10) https://www.tipranks.com/news/company-announcements/tower-semiconductor-bets-big-on-photonics-growth: "Sources SiPho/SiGe from Tower foundry for transceivers."

### MACOM (high)  → /macom.md
- note: Sources laser drivers/TIAs from MACOM for transceivers.
- [confirms] Converge Digest (EN, news, published 2026-01-01) https://convergedigest.com/macom-revenue-jumps-23-as-ai-optical-demand-accelerates/: "Sources laser drivers/TIAs from MACOM for transceivers."

### R&D·엔지니어 (비공개) (low)
- note: Silicon-photonics/optics R&D.
- [confirms] Ledesk (KO, news, published 2026-01-01) https://www.ledesk.co.kr/view.php?uid=15600: "Silicon-photonics/co-packaged-optics R&D."

### 화합물 반도체·광소재 (비공개) (low)
- note: Compound-semiconductor materials (InP/GaAs) and in-house fabs.
- [confirms] SEC EDGAR (EN, filing, published 2025-11-01) https://www.sec.gov/Archives/edgar/data/820318/000082031825000019/iivi-20250930.htm: "In-house compound-semiconductor lasers/optics."

Reverse side: https://valuechain.wiki/coherent/customers.md · Ripple: https://valuechain.wiki/coherent/ripple.md

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Full node: https://valuechain.wiki/coherent.md · JSON: https://valuechain.wiki/coherent.json