Sumitomo Electric

Sumitomo Electric supplies EML, continuous-wave and tunable laser sources for optical networks. It has also announced a 400G FR4 QSFP-DD module; its data center growth strategy emphasizes optical devices and substrates.

Role Lasers & components

Verified 11 Nov 2026

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Facts

Source per value

Role Where the company sits in the optics supply chain: pluggable module maker, DSP and chip supplier, laser and component maker, network OEM that sells its own optics, contract manufacturer, optical I/O and co-packaged optics developer, or active electrical cable maker.: Lasers & components 1
Top speed Gb/s Highest module or chip application rate documented in the cited sources, in Gb/s (1600 = 1.6T). A historical catalog or announcement is not proof of today’s maximum or volume shipments.: Not published
Speeds Data-center speed grades in the current portfolio, as the company lists them.: 400G FR4 module; EML and CW sources for high-speed optics 2
1.6T status Evidence for the 1.6T module or chip: volume/revenue shipping, customer sampling, or public demo/announcement. Blank means no dated status established; inspect the source date.: Not published
Form factors Pluggable form factors offered (QSFP28, QSFP56, QSFP112, QSFP-DD, OSFP, OSFP-XD and so on), or the package type for chips and engines.: Laser chips, tunable light sources; QSFP-DD (400G module) 2
LPO / LRO Offers linear pluggable optics (LPO) or linear receive optics (LRO), or the drivers, TIAs or DSPs built for them.: Not published
CPO / optical I/O Offers co-packaged optics, optical engines for CPO, or optical I/O chiplets.: Not published
Silicon photonics Identifies silicon photonics in a published product, design or demonstration. This flag does not establish volume shipments.: Not published
Coherent (ZR) Offers coherent pluggables or coherent DSPs (400ZR, ZR+, 800ZR) for data center interconnect.: Not published
Lasers Laser technologies the company makes or uses: VCSEL, EML, DML, CW lasers for silicon photonics, or tunable lasers.: EML, CW-LD, wavelength-tunable laser sources 1
Reaches Reach classes offered, from SR (multimode, about 100 m) through DR, FR and LR (single-mode, 500 m to 10 km) to ZR (80 km and beyond).: Not published
Named customers Hyperscaler or major customers the company or its filings name publicly.: Not published
Revenue Reported annual revenue in the original currency and fiscal year. Figures may cover an entire group and periods differ; this is not an optics market-share ranking.: Not published
Optics revenue share Share or amount of revenue from optical transceivers, datacom or the relevant segment, where a filing or earnings release states it.: Not published
Listing Stock exchange and ticker, or Private.: Not published
Manufacturing Countries where the company states it manufactures.: Not published
Parent Owner company for subsidiaries and acquired businesses.: Not published

Sources

Sumitomo Electric data center strategy (13 Nov 2025), pp. 10–12 accessed 2026-11-11
Sumitomo Electric QSFP-DD 400G-FR4 availability (13 Mar 2018) accessed 2026-11-11

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