Product Overview
The SPT-QD04G-LR4 is a QSFP-DD packaged 400G-LR4 optical transceiver module that supports a 400Gbps data transmission rate with a maximum transmission distance of 10km over single-mode fiber (with FEC). This module features an LC connector and a 4-channel CWDM wavelength multiplexing/demultiplexing design (1271/1291/1311/1331nm) with 53.125Gbps PAM4 modulation per channel, and is suitable for long-distance data center interconnect applications.
Product Features
- QSFP-DD MSA compliant: Complies with the QSFP-DD Multi-Source Agreement standard
- 400GE LR4 specification compliant: Complies with the 400G Ethernet LR4 specification
- 400Gbps data rate: 8×53.125Gbps PAM4 electrical interface
- 10km transmission distance: Maximum transmission distance of 10km over single-mode fiber (with FEC)
- LC interface: Standard LC fiber optic connector
- 4-channel CWDM design: 4 CWDM wavelength channels (1271/1291/1311/1331nm)
- PAM4 modulation format: Efficient 4-level pulse amplitude modulation
- Commercial temperature: 0°C ~ 70°C operating temperature range
- DDM digital diagnostic monitoring: Supports digital diagnostic management functions
- Class 1 laser product: Complies with the EN 60825-1:2014 standard
Product Specifications
| Item | Specification |
|---|---|
| Product Model | SPT-QD04G-LR4 |
| Package Type | QSFP-DD |
| Data Rate (per channel) | 53.125±100ppm GBd |
| Modulation Format | PAM4 |
| Transmission Distance | 10km (single-mode fiber, with FEC) |
| Fiber Type | Single-mode fiber |
| Interface Type | LC |
| Operating Temperature | Commercial (0°C ~ 70°C) |
Optical Characteristics
| Parameter | Symbol | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Wavelength Assignment | |||||
| L0 Wavelength | - | 1264.5 | 1271 | 1277.5 | nm |
| L1 Wavelength | - | 1284.5 | 1291 | 1297.5 | nm |
| L2 Wavelength | - | 1304.5 | 1311 | 1317.5 | nm |
| L3 Wavelength | - | 1324.5 | 1331 | 1337.5 | nm |
| Transmitter Characteristics | |||||
| Data Rate per Lane | - | 53.125±100ppm | - | - | GBd |
| Modulation Format | - | PAM4 | - | - | - |
| Side-mode Suppression Ratio | SMSR | 30 | - | - | dB |
| Total Average Launch Power | PT | - | - | 10.0 | dBm |
| Average Launch Power per Lane | PAVG | -2.8 | - | 4.0 | dBm |
| Outer Optical Modulation Amplitude (OMAouter) per Lane | POMA | 0.2 | - | 4.2 | dBm |
| Launch Power in OMAouter minus TDECQ per Lane (for ER≥4.5dB) | - | -1.2 | - | - | dB |
| Launch Power in OMAouter minus TDECQ per Lane (for ER<4.5dB) | - | -1.1 | - | - | dB |
| Transmitter and Dispersion Eye Closure for PAM4 per Lane | TDECQ | - | - | 3.9 | dB |
| Extinction Ratio | ER | 3.5 | - | - | dB |
| Difference in Launch Power between any Two Lanes (OMAouter) | - | - | - | 4 | dB |
| RIN15.6OMA | RIN | - | - | -136 | dB/Hz |
| Optical Return Loss Tolerance | TOL | - | - | 15.6 | dB |
| Transmitter Reflectance | RT | - | - | -26 | dB |
| Transmitter Transition Time | - | - | - | 17 | ps |
| Average Launch Power of OFF Transmitter per Lane | Poff | - | - | -20 | dBm |
| Receiver Characteristics | |||||
| Data Rate per Lane | - | 53.125±100ppm | - | - | GBd |
| Modulation Format | - | PAM4 | - | - | - |
| Damage Threshold per Lane | THd | - | - | 5.0 | dBm |
| Average Receive Power per Lane | - | -9.1 | - | 4.0 | dBm |
| Receive Power (OMAouter) per Lane | - | - | - | 4.2 | dBm |
| Difference in Receiver Power between any Two Lanes (OMAouter) | - | - | - | 4.6 | dB |
| Receiver Reflectance | RR | - | - | -26 | dB |
| LOS Assert | LOSA | - | - | -20 | dBm |
| LOS De-assert | LOSD | - | - | -1 | dBm |
| LOS Hysteresis | LOSH | - | - | 0.5 | dB |
Electrical Characteristics
| Parameter | Symbol | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Differential Input Voltage | - | - | 900 | - | mV |
| Differential Output Voltage | - | - | - | 900 | mV |
| Transition Time | - | 9.5 | - | - | ps |
| Near-End Eye Width (10⁻⁶ probability) | - | 0.265 | - | - | UI |
| Near-End Eye Height (10⁻⁶ probability) | - | 70 | - | - | mV |
| Far-End Eye Width (10⁻⁶ probability) | - | 0.20 | - | - | UI |
| Far-End Eye Height (10⁻⁶ probability) | - | 30 | - | - | mV |
| Common Mode Output Voltage | - | -350 | - | 2850 | mV |
Digital Diagnostic Functions
| Parameter | Symbol | Min | Max | Units |
|---|---|---|---|---|
| Temperature Monitor Absolute Error | DMI_Temp | -3 | 3 | °C |
| Supply Voltage Monitor Absolute Error | DMI_VCC | -0.1 | 0.1 | V |
| Channel RX Power Monitor Absolute Error | DMI_RX_Ch | -2 | 2 | dB |
| Channel Bias Current Monitor | DMI_Ibias_Ch | -10% | 10% | mA |
| Channel TX Power Monitor Absolute Error | DMI_TX_Ch | -2 | 2 | dB |
ESD Design
This transceiver is specified as ESD threshold 1kV for high-speed data pins and 2kV for all other electrical input pins tested per MIL-STD-883 Method 3015.4 / JESD22-A114-A (HBM). However, normal ESD precautions are still required during the handling of this module. This transceiver is shipped in ESD protective packaging. It should be removed from the packaging and handled only in an ESD protected environment.
Laser Safety
This is a Class 1 Laser Product according to EN 60825-1:2014. This product complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50 dated June 24, 2007.
Caution: Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.
Applications
- 400G Ethernet (10km single-mode fiber with FEC)
- Long-distance data center interconnects
- Cloud computing infrastructure
- High-performance computing networks
- 400G backbone networks
- Enterprise networks
Ordering Information
| Part Number | Product Description |
|---|---|
| SPT-QD04G-LR4 | QSFP-DD Optical Transceiver, 1271/1291/1311/1331nm (CWDM), 400G LR4, 10km, LC Interface with FEC, with DDM, Commercial Temperature |
Contact Information
Email: info@sopto.com.cn
Web: http://www.sopto.com.cn
Note: For customized solutions, please contact us.
