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

The BlueOptics Q28-AOC-25M-IX-BO InfiniBand fibre optic cable 25m OM3 is a 25-metre active optical cable (AOC) with QSFP28 connectors on both ends, intended for 100G high-speed transmissions over short distances. It uses OM3 multimode fibre with a 50 µm core diameter and LSZH (low smoke zero halogen) sheathing. The cable integrates optical-electrical conversion modules in the QSFP28 housings so it behaves as a hot-pluggable QSFP28-to-QSFP28 link compatible with SR4/100GBASE-SR4 applications and rack-to-rack connectivity within data centres and enterprise networks.

Advantages

The active optical construction provides lower weight and greater flexibility than direct-attach twinax solutions while maintaining 100G performance. Built-in I/O and O/E converters in the QSFP28 ends remove the need for separate transceivers, simplify installation and support hot-plug operation. OM3 multimode fibre and a 50 µm core diameter offer reliable signal quality for short-range high-bandwidth links. The LSZH jacket reduces halogen emissions and smoke in the event of fire, and components are manufactured to MSA/SFF and IEEE guidelines for interoperability.

Suitable for

• High-density rack-to-rack connections within data centres
• Short-reach 100G Ethernet interconnects (100GBASE-SR4)
• InfiniBand high-performance computing clusters requiring QSFP28 links
• Enterprise aggregation and spine-leaf fabric links inside server rooms

Key specifications

• Cable type: Active Optical Cable (AOC) with integrated optical-electrical conversion
• Length: 25 metres
• Connector type: QSFP28 to QSFP28 (hot-pluggable)
• Fibre type: OM3 multimode
• Core diameter: 50 µm
• Application: 100GBASE-SR4 / short-range 100G transmissions
• Sheath: LSZH (low smoke zero halogen)
• Compatibility: Designed to meet MSA/SFF and IEEE interoperability guidelines

How to use

Install the BlueOptics QSFP28-to-QSFP28 AOC by inserting each QSFP28 connector into the corresponding QSFP28 port on your switches, NICs or InfiniBand adapters. Ensure both ends are fully seated and latched; the integrated O/E converters will negotiate link parameters automatically. No separate transceivers or fibre termination is required. Use the cable for short-distance links inside racks or between adjacent racks and avoid excessive bending beyond the recommended bend radius.

Recommendations

When routing the cable, maintain manufacturer-recommended bend radius and avoid sharp kinks to preserve OM3 multimode performance. Use within the specified short-reach distance for 100GBASE-SR4 applications and verify device compatibility with QSFP28 AOC modules. Keep connectors clean and protected during installation to ensure reliable link quality.