Features
- Hot pluggable QSFP-DD form factor
- 400 Gb/s aggregate data rate
- 8 optical lanes at 53.125 Gb/s PAM4
- 8 electrical lanes at 53.125 Gb/s PAM4
- 8-lane parallel VCSEL transmitters and PIN photodiode receivers with TIAs
- MPO-16/APC optical connector
- SR8 (100 m) optical interface over OM4 multimode fiber with host-side KP4 FEC
- Single 3.3 V power supply
- Power consumption: Max. 8 W
- Operating case temperature: 0 °C to +70 °C
- Digital diagnostic monitoring (DDM) support
- RoHS compliant
Description
The WST-QD4-SR8-C module is a 400 Gb/s QSFP-DD optical transceiver module designed for short-reach multimode fiber (MMF) transmission.
It provides eight electrical lanes operating at 53.125 Gb/s PAM4 signaling and supports an SR8 optical interface for transmission distances up to 100 m over OM4 multimode fiber.
The module integrates optical and electrical components within a QSFP-DD form factor and uses an MPO-16/APC connector for optical connectivity.
The transmitters are based on 850 nm VCSEL lasers and the receivers use PIN photodiodes with TIAs, optimized for short-reach multimode fiber applications.
The module converts 8 × 53.125 Gb/s PAM4 electrical input signals into 8 optical output lanes, enabling 400 Gigabit Ethernet links over multimode fiber.
It is designed for operation with host-side KP4 forward error correction (FEC) to meet link performance requirements.
The module supports digital diagnostic monitoring (DDM) through the QSFP-DD management interface, enabling real-time monitoring of key operating parameters.
Specification
