400G OSFP
Overview: 400G OSFP (Octal Small Form Factor Pluggable) Optical Transceivers are next‑generation pluggable fiber modules designed to deliver an aggregate bandwidth of 400 Gbps across eight lanes of 50 Gbps PAM4 signals (8 × 50G). Defined by the OSFP MSA (Multi‑Source Agreement), these modules offer superior thermal and electrical performance for AI/ML clusters, hyperscale data centers, and cloud networks needing ultra‑dense 400G connectivity.
Technical Specifications
- Data Rate: 400 Gbps aggregate (8 × 50 Gbps PAM4 lanes)
- Reach Options: OSFP‑SR8 (100 m OM4), DR4 (500 m SMF), FR4 (2 km SMF), LR4 (10 km SMF)
- Wavelength: 850 nm (SR8) / 1310 nm (FR4 & LR4)
- Connector Interface: MTP/MPO‑16 (SR8/DR4), Dual CS or LC (FR4/LR4)
- Fiber Type: Multimode (OM4) or Single‑mode (SMF)
- Power Consumption: ≤ 10 W depending on model type
- Hot‑Pluggable: Yes (OSFP MSA standard)
- Compliances: IEEE 802.3bs (400GBASE‑SR8/DR4/FR4/LR4), OSFP MSA, CMIS, RoHS
Main Features
- High‑density 8‑lane architecture for 400G Ethernet applications
- Advanced thermal management for optimum cooling and reliability
- Compatible with next‑generation AI/ML switch fabrics and data center switches
- Supports 400GBASE‑SR8/DR4/FR4/LR4 protocols
- Breakout capable – 4 × 100G for flexible interconnect solutions
- Integrated Digital Diagnostics Monitoring (DDM/DOM)
- Backward compatibility with 800G OSFP via shared form factor
- Low jitter and high signal integrity for IEEE 802.3bs compliance
Applications
- 400G Ethernet Switch and Router Interconnects
- Data Center and Cloud Computing Infrastructure
- Artificial Intelligence Fabric and Machine Learning Clusters
- High‑Performance Computing (HPC) and Hyperscale Networks
- Long‑reach DCI (Data Center Interconnects) up to 10 km on SMF
Related Keywords: 400G OSFP transceiver datasheet, OSFP‑SR8 optical module, 400GBASE‑FR4/LR4 optical transceiver, 400G OSFP MSA module, high‑density data center optics, OSFP 400G fiber link.
FAQ – 400G OSFP Optical Transceivers
1. What is a 400G OSFP optical transceiver?
A 400G OSFP optical transceiver is a pluggable fiber module supporting eight lanes of 50 Gbps PAM4 signals to deliver an aggregate bandwidth of 400 Gbps for high‑speed Ethernet applications.
2. What are the different types of 400G OSFP modules?
The standard variants include SR8 (100 m MMF), DR4 (500 m SMF), FR4 (2 km SMF), and LR4 (10 km SMF), each optimized for specific link distances and fiber types.
3. Which connectors are used in 400G OSFP modules?
OSFP‑SR8 and DR4 use MPO/MTP‑16 connectors, while OSFP‑FR4 and LR4 use dual CS or dual LC interfaces for single‑mode fiber links.
4. Can a 400G OSFP transceiver be used in QSFP‑DD ports?
No, OSFP has a larger form factor and different pin layout. However, some vendors offer mechanical adapters to interface with certain 400G QSFP‑DD systems.
5. What are the advantages of OSFP over QSFP‑DD?
OSFP provides better thermal headroom, supports future 800G upgrades, and has an optimized design for next‑gen high‑density switch deployments.
6. Does a 400G OSFP support breakout to 100G channels?
Yes. The 8 lanes can be broken out into 4 × 100 Gbps channels for flexible network topologies or inter‑switch uplinks.
7. What is the power consumption of 400G OSFP modules?
Power usage depends on variant — SR8 models typically consume 7 W, while FR4/LR4 require up to 10 W due to longer reach optics and signal amplification.
8. Which standards and protocols define 400G OSFP modules?
400G OSFP modules comply with IEEE 802.3bs, OSFP MSA, and 400GBASE Ethernet standards as well as the Common Management Interface Specification (CMIS).