CFP2 400G ZR Coherent QSFP-DD
Variant Specifications
ST-QDFC 400G Coherent QSFP-DD Module
The ST-QDFC coherent optical module is designed for Data Center Interconnect (DCI) applications and complies with the OIF 400ZR MSA and QSFP-DD MSA standards. It supports digital diagnostics through an I2C interface and delivers high-performance 400G coherent transmission in a compact QSFP-DD Type 2 form factor.
The module operates on the C-band 75 GHz / 100 GHz grid and integrates coherent DSP ASIC functionality with ultra-narrow linewidth tunable lasers, high-speed modulators, and highly responsive coherent receivers. It supports 400G 16QAM modulation at 60G baud rate and is optimized for modern high-capacity optical networking.
Key Features
| Feature | Details |
|---|---|
| Standard Compliance | QSFP-DD MSA, OIF 400ZR (Version 01.0, March 10, 2020) |
| Diagnostics | Digital Diagnostic Monitoring via I2C interface |
| Electrical Interface | Hot pluggable 76-pin electrical interface |
| Modulation | 400G 16QAM |
| Bit Rate | 400GBASE-R, 425 Gbps |
| Electrical Lane Interface | 400G-AUI-8 C2M; 8 × CEI-56G-VSR PAM-4 |
| Optical Connector | LC Duplex |
| Power Consumption | Maximum 16.5 W |
| Power Supply | Single +3.3 V |
| Operating Temperature | 0°C to 70°C |
| Environmental Compliance | RoHS 2 compliant |
Optical & Performance Specifications
| Parameter | Specification |
|---|---|
| Application | Data Center Interconnect (DCI) |
| Optical Band | C-band |
| Grid Support | 75 GHz / 100 GHz grid |
| Baud Rate | 60G baud |
| Laser Type | Ultra-narrow linewidth tunable laser |
| DSP | Integrated coherent DSP ASIC |
| Receiver Type | High-responsivity coherent receiver |
Mechanical Specifications
| Parameter | Specification |
|---|---|
| Form Factor | QSFP-DD Type 2 |
| Dimensions | 18.4 mm × 93.4 mm × 8.5 mm |
| Connector Type | LC Duplex |
| Footprint | Compliant with QSFP-DD MSA |
| Hot Plug Support | Supported |
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