400G FR4

400G FR4

Powering Next-Gen Data Fabrics

In the era of AI-driven hyperconnectivity, seamless data mobility between compute clusters and across metro networks has become the critical path to innovation. Our ​​400G FR4 Transceiver Series​​ redefines the economics of scalable connectivity, delivering uncompromised 2km reach with carrier-grade reliability for tomorrow's cognitive infrastructure. Engineered to thrive in leaf-spine architectures and distributed AI clusters, this portfolio bridges the gap between high-density switching and cost-efficient optical deployment.

Why FR4?

--The Distance-Performance Sweet Spot​​

Unlike short-reach SR/DR optics limited to 500m, FR4 technology leverages single-mode fiber to achieve ​​2km transmission​​ – the precise range demanded by:

• ​​Metro DCI edge nodes​​ requiring low-latency campus linking
• ​​GPU farm interconnects​​ in scaled AI training pods
• ​​Cloud gateway aggregation​​ points needing future-proof headroom

Architectural Flexibility, Unified Performance​​

The series offers four deployment-ready variants:

• ​​2x200G OSFP FR4​​: Breakout-ready for legacy 200G spine upgrades, enabling pay-as-you-grow migration
• ​​400G OSFP FR4​​: Optimized for thermal resilience in NVIDIA Spectrum-4 switches, sustaining 9W peak power
• ​​400G QSFP-DD FR4​​: Dual-density compatibility for Arista/ Cisco chassis, supporting 36 ports per 1RU
• ​​400G QSFP112 FR4​​: PAM4-optimized for Broadcom Tomahawk 5 platforms, cutting power-per-bit by 30%

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Q: What is 400G FR4 technology? How does it differ from other 400G optics?​​

​​A:​​ FR4 denotes a ​​2km single-mode fiber transmission​​ standard ("FR"=2km range, "4"=4 optical lanes). Unlike short-reach SR/DR optics (≤500m) or long-haul LR modules (10km), FR4 targets ​​mid-range scenarios​​ like campus DCI links or cross-rack AI GPU interconnects.

Established in 2020, Macrochip Technology Co., Ltd is a high-tech corporation dedicated to R&D and manufacturing of silicon photonics chips and optical transceivers for data center and 5G Network. With the headquarter in Quanzhou, Fujian Province, Macrochip also set up branch offices in Beijing Zhongguan Village and Wuhan Optical Valley.

• Quanzhou: Headquarter, Operation, R&D, Production, Sales
• Beijing: SiPh Chip Center, Sales
• Wuhan: Transceiver Center, Sales

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