The Hermesys HydraX™ 800G QSFP-DD Active Optical Cable (AOC) delivers high-bandwidth connectivity through an integrated multimode optical assembly. Eight retimed 100G PAM4 channels provide an aggregate Ethernet capacity of 800 Gb/s, enabling reliable data transmission across distances that exceed the practical reach of high-speed copper cables.
The cable combines 850nm VCSEL transmitters, PIN photodetectors and built-in clock and data recovery at both ends. Its fixed QSFP-DD to QSFP-DD construction reaches up to 60 metres over OM3 fiber or 100 metres over OM4 fiber, simplifying the deployment of high-density links without separate optical transceivers and patch cords.
Key Features and Benefits
- 800 Gb/s aggregate capacity across eight 100G PAM4 optical channels
- QSFP-DD to QSFP-DD integrated active optical cable assembly
- Maximum reach of 60 metres over OM3 multimode fiber
- Maximum reach of 100 metres over OM4 multimode fiber
- Nominal 850nm wavelength using eight-channel VCSEL transmitter arrays
- Eight-channel PIN photodetector arrays at the receiving ends
- Built-in transmitter and receiver clock and data recovery
- Hot-pluggable form factor for installation without shutting down compatible equipment
- Digital diagnostic monitoring support
- Power consumption of no more than 14W per cable end
- Commercial operating temperature range from 0°C to 70°C
Standards and Management
- Supports the retimed 800GAUI-8 electrical interface
- Compliant with QSFP-DD Hardware Specification Revision 6.3
- Supports CMIS Revision 5.2 module management
- Designed in accordance with IEEE 802.3ck
- Designed in accordance with IEEE 802.3db
- Uses PAM4 modulation with host-based FEC support
Applications
- 800G data centre Ethernet fabrics
- AI and machine-learning compute clusters
- High-performance computing networks
- Switch-to-switch optical interconnections
- Connections between adjacent or separated equipment racks
- Cloud and hyperscale network infrastructure
