Features
- Full-duplex SMF AOC: 1×QSFP-DD to 4×QSFP28
- QSFP-DD electrical: 400GAUI-8, 8×50G PAM4 (retimed)
- QSFP28 electrical (per end): CAUI-4 / 100GAUI-4, 4×25.78125G NRZ
- Optical: QSFP-DD 400GBASE-DR4 (4×53.125 GBd PAM4);QSFP28 100GBASE-DR (1×53.125 GBd PAM4)
- Optical engine implementation QSFP-DD DR4 side: integrated SiPh PIC; Tx uses single cooled 1311nm CW DFB laser source with driver mounted to PIC; Rx uses PIN‑PD + TIA integrated in PIC QSFP28 DR side: Tx single‑channel 1310 nm EML; Rx single-channel PIN-TIA
- Connectors: unlocked MPO-12 and 4× Duplex LC
- Supply Voltage +3.3 V
- Cable length: 0.5–50 m
- Operating case temperature: 0°C to +70°C;
Note: Laser/PD implementation may vary by option while maintaining compliance to the specified IEEE optical interfaces.
Description
The 400G QSFP-DD DR4 to 4×100G QSFP28 DR Active Optical Cable (AOC) is a compact, low-power breakout
solution that connects one 400G switch port to four independent 100G ports over single-mode fiber. The
QSFP-DD end supports a retimed 8×50G PAM4 400GAUI-8 electrical interface and 400GBASE-DR4 PAM4 optics
(4×53.125 GBd, 1310-nm class). Each QSFP28 end provides a dense 100GBASE-DR PAM4 optical engine
(1310-nm EA-DFB transmitter, PIN-PD receiver with integrated CDR) with a 4×25.78125 Gb/s NRZ
CAUI-4/100GAUI-4 host electrical interface. Integrated DSP/gearbox performs lane aggregation/retiming and
supports CMIS 4.0 management.
Specification
