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Views: 399 Author: Anna Publish Time: 2025-10-13 Origin: Site
1. Main Package Formations of 800G Optical Transceivers
800G DR8:
800G 2FR4:
800G 2LR4:
800G PLR8:
4. Application of 800G Optical Modules in InfiniBand (IB) Networks
5. The value of 800G optical modules in IB networks lies in:
With the rapid development of artificial intelligence, cloud computing, and high-performance computing (HPC), the requirements for network bandwidth and latency in intelligent computing centers are increasing exponentially. Against this backdrop, 800G optical transceivers, with their ultra-high throughput and low power consumption, have become a core component for building next-generation intelligent computing networks. This article will analyze 800G optical transceivers from the perspectives of package form, network application scenarios, mainstream models, and device compatibility.
The packaging technology of 800G optical transceivers directly affects their transmission performance, heat dissipation capacity, and compatibility. Currently, mainstream package forms include:
QSFP-DD: Quad Small Form-factor Pluggable (Double Density) optical transceivers. Compared to QSFP optical transceivers, this supports double the number of high-speed electrical interfaces, with eight. Features: It features eight electrical interfaces, each with a speed of up to 100Gbps, providing a total bandwidth of 800Gbps. It offers high density, high performance, and low power consumption, making it suitable for data centers, cloud computing, and 5G communications. Compatibility: Fully compatible with QSFP28 and QSFP+.
Meaning: This refers to an octal small form-factor pluggable optical module with eight electrical channels.
Features: Each port provides 100Gb/s data rate, for a total bandwidth of 800Gb/s. Slightly larger than QSFP-DD, it supports higher power consumption and heat dissipation. Common interfaces include LC and MPO.
Compatibility: Not compatible with QSFP28 and QSFP+.
QSFP112 Form Factor: Based on the evolution of the QSFP-DD form factor architecture, the QSFP112 form factor supports single-channel 112G PAM4 modulation (8 channels with a total data rate of 800G). It is compatible with the QSFP-DD physical form factor and connector, making it suitable for high-density, low-power scenarios.
Technical Principle: Includes 8 Tx and 8 Rx ports, with a single-channel rate of 100 Gbps and a wavelength of 1310 nm.
Interface Type: Optical interface is MPO-16.
Transmission Distance: 500 meters, using MTP/MPO-16 APC connectors.
Packaging: Typically uses QSFP-DD.
Technical Principle: Includes four wavelengths (1271/1291/1311/1331 nm), with a single-channel rate of 100 Gbps. A mux is used to reduce the number of optical fibers.
Interface Type: Optical interface uses dual C$ or dual duplex LC connectors.
Transmission Distance: 2 km, using dual LC connectors.
Packaging: OSFP.
Technical Principle: Single-channel rate of 100Gbps, using a specific wavelength for transmission.
Interface Type: Dual LC connectors.
Transmission Distance: 10km, 1310nm wavelength.
Package Type: OSFP package.
Technical Principle: Single-channel rate of 100Gbps, using a 1310nm wavelength for transmission.
Interface Type: MTP/MPO-16 APC connectors.
Transmission Distance: 10km.
Package Type: Commonly QSFP-DD or OSFP package.
With the gradual maturity of the 1.6T optical module standard, 800G optical modules will enter a large-scale deployment cycle between 2024 and 2026. Their combination with technologies such as CPO (Co-Packaged Optics) and LPO (Linear Drive Pluggable Optics) will further reduce power consumption in intelligent computing center networks and drive computing efficiency to new heights.
InfiniBand networks, with their high bandwidth, low latency, and RDMA (Remote Direct Memory Access) features, have become the preferred solution for A| training and scientific computing.
Support for the NDR (Next Data Rate) standard:
800G modules meet the NDR 400G/800G speed requirements, doubling the bandwidth per port. Compatible with NVIDIA Quantum-2 InfiniBand switches, they provide lossless interconnection for large-scale GPU clusters.
Topology Optimization: By deploying 800G OSFP daylight modules, intelligent computing centers can build Fat-Tree or DragonFly+ topologies, reducing communication latency for A| training tasks to microseconds while supporting scalability to thousands of nodes.
