⚡ 800G OSFP 2×FR4: High-Speed Optical Innovation for Next-Gen Data Centers
by Optech – The Professional Optical Transceivers Manufacturer
As data workloads explode in artificial intelligence (AI), machine learning (ML), and high-performance computing (HPC), the demand for ultra-high bandwidth and low-latency connectivity is higher than ever. Enter the 800G OSFP 2×FR4 transceiver—a powerful solution designed for the latest generation of leaf-spine network architectures and AI cluster interconnects.
🔧 Technical Overview: What Is 800G OSFP 2×FR4?
The 800G OSFP 2×FR4 is a hot-pluggable optical transceiver that delivers up to 800Gbps of data over single-mode fiber (SMF) using two independent 400G FR4 channels. It adopts PAM4 modulation, supports 8x100G lanes in the electrical domain, and uses 2x400G duplex LC optical connectors in the optical domain.
✅ Key Specifications:
| Parameter | Description |
| Form Factor | OSFP (Octal Small Form-Factor Pluggable) |
| Max Data Rate | 800Gbps total (2×400G) |
| Electrical Interface | 8×100G PAM4 |
| Optical Interface | 2×400G FR4 (2 LC duplex connectors) |
| Wavelength | 4× CWDM wavelengths per 400G FR4 |
| Transmission Distance | Up to 2 km (per channel) |
| Power Consumption | ≤ 16W typical |
| FEC Requirement | RS-FEC (KP4) on host side |
| Compliance | IEEE 802.3cu, CMIS 5.2, OSFP MSA |
🧠 Why 2×FR4 Design?
Instead of using a single 800G channel, the 2×FR4 module splits the transmission into two separate 400G channels (each FR4). This offers:
- 🔄 Backward compatibility with 400G optics
- 🔌 Flexible deployment for aggregation or breakout scenarios
- 🔍 Cost-effective solution for intermediate upgrades before full 800G adoption
🌐 Application Scenarios
1. Spine–Leaf Architecture in Hyperscale Data Centers
In modern hyperscale environments, 800G OSFP 2×FR4 modules are widely used in:
- Leaf switches to spine switches
- Spine to core router interconnects
- High-bandwidth aggregation points
- Reducing cabling density vs. dual 400G deployments
2. AI Clusters & GPU-to-GPU Connectivity
High-performance computing and AI/ML training rely on massive data exchange between nodes. This transceiver is ideal for:
- NVIDIA HGX & DGX platforms
- GPU-to-switch or switch-to-switch connections
- Ethernet-based AI fabrics with low-latency and high-throughput demands
3. Carrier Networks & Metro Aggregation
Its 2 km reach and compact OSFP footprint make it suitable for metro edge or 5G backhaul deployments where density + performance matter.
🏭 About Optech – The Trusted Optical Transceiver Manufacturer
Optech is a leading manufacturer specializing in the R&D and production of optical transceivers, DACs, and AOCs for data centers, telecom networks, AIoT infrastructure, and hyperscale applications.
Why Choose Optech’s 800G OSFP 2×FR4?
- ✅ Industry-Leading Compatibility: 100% tested with Cisco, Juniper, Arista, and NVIDIA switches
- ✅ Low Power Design: ≤16W with excellent thermal dissipation
- ✅ Reliable Quality: ISO9001, CE, RoHS, TUV, UL certified
- ✅ OEM & ODM Ready: Full private label service available
- ✅ Fast Lead Time: Scalable production with flexible logistics
Optech’s transceivers are deployed in over 40+ countries, supporting global data centers, cloud providers, and telecom operators.
📈 Future-Ready with 800G
As the network transitions from 400G to 800G, the OSFP 2×FR4 module is a cost-effective and high-performance bridge to next-gen infrastructure.
Whether you’re scaling your AI network, building a cloud backbone, or upgrading your DC core, Optech’s 800G OSFP 2×FR4 delivers the flexibility and power your infrastructure demands.
📩 Contact Optech today to learn more about our 800G portfolio, samples, or custom OEM solutions.
| Optech Part Number | Model Name | Product Description |
| OPOM-S02-13-CB2 | 800G OSFP-400G-2FR4 | 800G OSFP-400G-2FR4 2x200GBASE-FR4 transceiver up to 2km over two pairs of duplex LC SMF |
