400G
400G QSFP-DD DR4
400G QSFP-DD DR4 optical transceiver with four parallel 100G PAM4 channels.
Communication Products
Product Overview
This optical module boasts an astonishing transmission rate of up to 400Gbps. Through four independent channels, each operating at a rate of 100Gbps in parallel, it enables ultra – high – speed and stable data transmission. Inside the data center, data interaction between servers and switches, as well as between switches, is extremely frequent. The 400G QSFP – DD DR4 optical module can efficiently and rapidly handle large – scale data transmission tasks, significantly enhancing the operational efficiency of the data center and ensuring the smooth operation of various business services.
Performance Specifications – Optical
Transmitter Optical Specifications
| Parameter | Symbol | Min | Typ. | Max | Unit |
|---|---|---|---|---|---|
| Transmitter | |||||
| Centre Wavelength | λ | 1311 | nm | ||
| Transmitter Signal Rate | 53.125 | Gbd PAM4 | |||
| SMSR | 30 | dB | |||
| Average launch power, each lane | Pout | -2.9 | 4 | dBm | |
| Outer OMA, each lane Note1 | OMAouter | -0.8 | 4.2 | dBm | |
| Launch Power in OMAouter minus TDECQ, each lane | TOMA | -2.2 | dB | ||
| Transmitter and dispersion eye closure for PAM4 | TDECQ | 3.4 | dB | ||
| TDECQ – 10log10(Ceq) | 3.4 | dB | |||
| Optical Return Loss Tolerance | TOL | 21.4 | dB | ||
| Average POUT (Laser Turn off) | Poff | – | -15 | dBm | |
| Extinction Ratio | ER | 3.5 | – | – | dB |
| Transmitter transition time | 17 | ps | |||
| RIN17.1OMA | RIN | -136 | dB/Hz | ||
| Transmitter Reflectance | Tr | -26 | dB |
Receiver Optical Specifications
| Parameter | Symbol | Min | Typ. | Max | Unit |
|---|---|---|---|---|---|
| Receiver | |||||
| Centre Wavelength | λ | 1311 | nm | ||
| Damage threshold, each lane | Pd | 5 | dBm | ||
| Average receive power, each lane | Pa | -5.9 | – | 4 | dBm |
| Receive power (OMAouter), each lane | RXoma | – | – | 4.2 | dBm |
| Receiver Reflectance | -26 | dBm | |||
| Receiver Sensitivity (OMAouter), each laneNote1 | SOMA | -1.9 | dBm | ||
| Stressed eye closure for PAM4 (SECQ)Note2 | 3.4 | dB | |||
| SECQ – 10log10(Ceq), lane under test | 3.4 | ||||
| OMAouter of each aggressor lane | 4.2 | dBm |
Technical Notes
- Even when TDECQ is below 1.4 dB, the minimum OMAouter must exceed the specified value.
- Receiver sensitivity (OMAouter), each lane maximum, is informative and is defined for a transmitter with SECQ up to 3.4 dB.
- Measured with a conformance test signal at TP3 for BER = 2.4×10−4.
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