In terms of design, the 400G QSFP112 DR4 takes full account of energy utilization efficiency. By applying advanced chip technologies and optimized circuit designs, it effectively reduces its own power consumption level. The relatively low power consumption not only helps to cut down the energy consumption in places like data centers and thus reduce the operating costs, but also alleviates the heat dissipation pressure caused by equipment heating, further enhancing the overall stability and reliability of the equipment and prolonging its service life. This is in line with the current trend of green and energy-saving development.
Performance Specifications – Optical
|
Parameter |
Symbol |
Min |
Typ. |
Max |
Unit |
|
Transmitter |
|||||
| Centre Wavelength |
λ |
|
1311 |
|
nm |
|
SMSR |
|
30 |
|
|
dB |
|
Average launch power, each lane |
Pout |
–2.9 |
|
4 |
dBm |
|
Outer OMA, each laneNote5 |
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,each lane |
ER |
3.5 |
- |
- |
dB |
|
Transmitter transition time |
|
|
|
17 |
ps |
|
RIN17.1OMA |
RIN |
|
|
-136 |
dB/Hz |
|
Transmitter Reflectance |
Tr |
|
|
-26 |
dB |
Note 5: Even if TDECQ < 1.4dB, OMAouter (min) must exceed this value
|
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 lane Note 6 |
SOMA |
|
|
-4.4 |
dBm |
|
Stressed eye closure for PAM4 (SECQ) Note 7 |
|
|
3.4 |
|
dB |
|
SECQ – 10log10(Ceq), lane under test |
|
|
|
3.4 |
|
|
OMAouter of each aggressor lane |
|
|
4.2 |
|
dBm |
Note 6: Receiver sensitivity (OMAouter), each lane (max) is informative and is defined for a transmitter with a value of SECQ up to 3.4 dB.
Note 7: Measured with conformance test signal at TP3 for the BER = 2.4×10-4
