FS AI Optics Portfolio — 400G to 1.6T Scale-Out and Coherent Modules

Specifications

Overview

FS has packaged its AI interconnect optics into a deliberately simple two-tier structure that maps to the two problems every GPU cluster build faces. Scale-out covers the links inside the cluster - between GPU servers, NICs, switches and racks across Ethernet, RoCE and InfiniBand - and tops out at 1.6T modules validated against NVIDIA Quantum-X800 switches. Scale-across covers the links between clusters, where coherent optics carry traffic over up to 500 km of single-mode fiber.

At the top of the scale-out stack sit the OSFP-DR8-1.6T and OSFP-2FR4-1.6T twin-port modules, each running 8x 200G PAM4 electrically on a Broadcom 3 nm DSP. The DR8 uses silicon photonics with a CW laser and dual MTP/MPO-12 connectors for 500 m reaches at 25 W; the 2FR4 uses EML transmitters on CWDM4 wavelengths for 2 km at 26 W. FS reports 100% verification on NVIDIA Quantum-X800 switches and lists them as equivalents to NVIDIA part numbers MMS4A00 and MMS4A50-XM, with the DR8 aimed at switch-to-switch links and 1.6T-to-two-800G breakouts into DGX B300 systems.

For inter-site capacity the 800G ZR/ZR+ coherent modules ship in OSFP and QSFP-DD with a Marvell 5 nm DSP, rated for 120 km and 500 km lines and supporting both C-band and L-band to raise capacity per fiber pair. Sites aggregating client traffic first can use the D7070 muxponder, a 1U platform taking 100GbE and 400GbE client services on QSFP28 and QSFP112 and placing them onto four 800G coherent wavelengths through CFP2-DCO pluggables for 3.2 Tb/s per platform. The BOX 5 Ultra handheld toolkit covers field provisioning - configuring, validating and wavelength-tuning modules from 100M to 1.6T across 15 form factors and 200+ brands, on a 3,200 mAh battery rated for eight hours.

Key Benefits

One optics source for both tiers covers intra-cluster scale-out and inter-site scale-across without a second vendor qualification. NVIDIA Quantum-X800 verification and MMS4A00/MMS4A50-XM equivalence removes compatibility risk on InfiniBand XDR fabrics. Three OSFP top profiles match the cooling style of each switch cage or NIC, including liquid-cooled gear. BOX 5 Ultra field provisioning means optics can be coded and validated on a bench rather than consuming production switch ports and change windows.

Applications

AI and GPU cluster fabrics, InfiniBand XDR scale-out, DGX B300 800G breakouts, data center interconnect and scale-across up to 500 km, cloud and carrier DCI aggregation, and on-site optical provisioning and validation.

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