BlueOptics Q28-AOC-25M-AT-BO InfiniBand fibre optic cable 25m OM3

The BlueOptics Q28-AOC-25M-AT-BO InfiniBand fibre optic cable 25m OM3 is an active optical cable (AOC) with QSFP28 connectors on both ends, engineered for short-reach 100G high-speed links inside and between server racks. It uses OM3 multimode fibre with a 50 µm core diameter and integrates built-in optical-electrical conversion in the QSFP28 modules to provide a hot-pluggable solution for data centres and high-performance computing environments. The cable features a flame-resistant LSZH sheath for reduced smoke and no halogen emissions in case of fire.

Advantages

The active optical design provides lower weight and greater flexibility compared with direct-attach twinax (DAC) cables while maintaining 100GBASE-SR4 performance. QSFP28 transceiver modules integrated at each cable end conform to SFF and IEEE-related MSA specifications, ensuring interoperability with compatible QSFP28 ports. The cable offers a smaller bend radius and reduced diameter relative to equivalent DAC solutions, and each unit is factory-new and pre-tested for functionality and quality. Manufacturing uses certified components and follows industry standards for CE, RoHS and additional safety norms.

Suitable for

• Short-reach 100G links within a rack or between adjacent racks
• High-performance computing clusters and InfiniBand deployments
• Data centre switch-to-switch or switch-to-server connections using QSFP28 ports
• Environments requiring LSZH (low smoke zero halogen) cabling

Key specifications

• Connector type: QSFP28 to QSFP28 (active transceiver modules integrated)
• Length: 25 metres
• Fibre type: OM3 multimode fibre
• Core diameter: 50 µm
• Application: 100GBASE-SR4 / InfiniBand high-speed short-reach links
• Sheath: LSZH (low smoke, zero halogen) flame-resistant jacket
• Bend radius: reduced compared with direct-attach twinax solutions (improved flexibility)

How to use

Install the BlueOptics QSFP28 to QSFP28 AOC by inserting each QSFP28 connector into the corresponding QSFP28 port on your switches, servers or adapters. The integrated optical-electrical converters are hot-pluggable and require no external transceivers; ensure that connected devices support 100G QSFP28 interfaces and 100GBASE-SR4 or compatible InfiniBand signalling. Route the cable following standard data centre cabling practices, avoiding sharp bends that exceed the recommended bend radius and securing the cable to avoid strain on the connectors. Verify link status via your networking equipment after connection.

Usage recommendations

Use this AOC for short-distance 100G interconnects where weight, flexibility and LSZH jacket properties are important. Confirm compatibility with the host QSFP28 ports and firmware, keep bend radius within manufacturer guidance, and handle connectors by the housing to avoid contaminating optical interfaces.