company blog about Supply Intel Ethernet Optics Series:QSFP28,QSFP+,SFP+,SFP28

Supply Intel Ethernet Optics Series:QSFP28,QSFP+,SFP+,SFP28

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[Detailed Overview of Intel Ethernet Optical Module Core Products]

1. Intel QSFP28 100G Optical Module (four-channel 25G, the mainstay of 100G Ethernet)

QSFP28 is a 100G high-density, high-speed interconnect standard featuring four-channel 25G parallel transmission. It complies with the IEEE 802.3bm and SFF-8636 MSA specifications and incorporates Intel’s proprietary silicon photonics technology. Offering low power consumption, a wide operating temperature range and high reliability, it serves as a core interconnect component for leaf-spine architectures in cloud data centres, AI training clusters and supercomputing centres.

Mainstream Model Specifications

100GBASE-SR4: Multimode OM4 fibre, transmission distance 100m, short-distance in-rack interconnect, power consumption 2.5W;

100GBASE-LR4: Single-mode fibre, maximum distance 10km, campus-wide cross-rack backbone links;

100G CWDM4 silicon photonics module: single-mode 500m/2km/10km, four-wavelength multiplexing, significantly reducing cabling costs;

Key Advantages

Hot-swappable design, supports DDM digital diagnostics, with real-time monitoring of optical power, temperature and voltage;

Industrial-grade models with a wide temperature range of 0–85°C, suitable for industrial switches and edge computing devices;

Native compatibility with Intel XL710/XXV710 network interface cards and ASICs in mainstream 100G switches;

Supports RoCE v2 and DPDK acceleration, with ultra-low latency, suitable for massive east-west traffic transmission.

Applicable scenarios: AI server clusters, large-scale cloud data centres, high-performance computing (HPC), and uplink aggregation for 400G switches.

2. Intel QSFP+ 40G optical modules (four-channel 10G, 40G traditional data centre standard)

QSFP+ four-channel 10Gbps parallel architecture, with a total bandwidth of 40G, compliant with the 802.3ba standard, providing a seamless upgrade path for traditional 40G networks whilst balancing cost-effectiveness and versatility.

Mainstream Models

40GBASE-SR4 (multimode, 100 m), 40GBASE-LR4 (single-mode, 10 km), 40G PSM4 parallel single-mode;

Product Highlights

Compatible with 40G Ethernet and QDR InfiniBand; supports virtualisation and the FCoE protocol for storage convergence; features a built-in I²C monitoring bus for convenient operation and maintenance; excellent power consumption control eliminates the risk of overheating in high-density rack deployments;

Suitable scenarios: private clouds for medium to large enterprises, traditional storage SAN networking, 40G switch aggregation, and virtualised server clusters.

3. Intel SFP28 25G Optical Modules (Single-channel 25G, next-generation access/storage standard)

The SFP28 is a compact, single-channel 25.78 Gbps transceiver featuring a small form factor and high port density; it is the standard optical module for 5G transport, 25G server access and distributed storage.

Standard Models

E25GSFP28SR (multi-mode, short-range), E25GSFP28LRX (wide-temperature, long-range, single-mode 10 km); available in both commercial and industrial wide-temperature versions;

Key Features

Compatible with SFF-8431 and SFF-8472 specifications, with DDM real-time diagnostics; 2.5 times the bandwidth of 10G with lower power consumption; can be directly installed in Intel XXV710 25G network cards;

Suitable Applications: 5G base station fronthaul/midhaul, distributed NAS storage, 25G ToR top-of-rack switches, and high-speed data transmission for industrial machine vision.

4. Intel SFP+ 10G Optical Modules (Single-channel 10G, enterprise 10 Gigabit basic networking)

Intel’s mature 10 Gigabit optical interconnect solution offers the widest market compatibility, covering all scenarios including enterprise data centres, security and industrial control systems. Representative models include the E10GSFPSR and E10GSFPLR.

Transmission Specifications

Multiple versions available: SR multimode (300 m), LR single-mode (10 km) and ER long-reach (40 km);

Product Advantages

Compatible with Intel 82599 10 Gigabit network cards and the full range of enterprise switches; resistant to electromagnetic interference, ensuring stable fibre transmission with no packet loss; low deployment costs, making it the preferred choice for upgrading existing networks;

Suitable Scenarios: Backbone networks for small and medium-sized enterprises, security surveillance server rooms, industrial automation equipment, high-speed media file transfer for film and television post-production, and interconnection of small private cloud servers.