100G QSFP28 100M is a Four-Channel, Pluggable, Parallel, Fiber-Optic QSFP28
Transceiver for IEEE 802.3bm,100GBASE SR4 Applications,or 100G Gigabit Ethernet and Infiniband and FDR/EDR Applications. The QSFP28 full-duplex optical module offers 4
independent transmit and receive channels, each capable of 25.78Gbps operation for an aggregate data rate of 103.12Gbps 70m using OM3 fiber. These modules are designed to operate over multi mode fiber systems using850nm VCSEL laser array. An optical fiber ribbon cable with an MPO/MTPTM connector can be plugged into the QSFP28 module receptacle. QSFP28 SR4 is one kind of parallel transceiver which provides increased port density and total system cost savings.
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ParameterSymbolMinTypicalMaxUnitNotes |
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Transmitter |
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Center Wavelength |
λC |
840 |
850 |
860 |
nm |
1 |
|
RMS Spectral Width |
λrms |
– |
|
0.65 |
nm |
1 |
|
Average Launch Power, each lane |
PAVG |
-8.4 |
|
+2.4 |
dBm |
|
|
Optical Modulation Amplitude (OMA) |
POMA |
-5 |
|
0 |
dBm |
1 |
|
Difference in Launch Power between any two lanes |
Ptx,diff |
|
|
4.0 |
dB |
|
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Launch Power in OMA minus Transmitter and Dispersion Penalty (TDP), each Lane |
OMA-TDP |
|
|
3.5 |
dBm |
1 |
|
Extinction Ratio |
ER |
3.5 |
|
|
dB |
|
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Transmitter Eye Mask Margin |
EMM |
10 |
|
|
% |
2 |
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Average Launch Power OFF Transmitter, each Lane |
Poff |
|
|
-30 |
dBm |
|
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Transmitter Eye Mask Definition {X1, X2, X3, Y1, Y2, Y3} |
|
{0.3, 0.38, 0.45, 0.35, 0.41, 0.5}
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Receiver |
|
Center Wavelength |
λC |
840 |
850 |
860 |
nm |
|
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Damage Threshold |
THd |
3 |
|
|
dBm |
|
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Overload, each lane |
OVL |
2.4 |
|
|
dBm |
|
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Receiver Sensitivity in OMA, each Lane |
SEN |
|
|
-5.2 |
dBm |
3 |
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Signal Loss Assert Threshold |
LOSA |
-30 |
|
|
dBm |
|
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Signal Loss Deassert Threshold |
LOSD |
|
|
-9 |
dBm |
|
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LOS Hysteresis |
LOSH |
0.5 |
|
6 |
dB |
|
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Optical Return Loss |
ORL |
|
|
-12 |
dBm |
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Notes:
1. Transmitter wavelength, RMS spectral width and power need to meet the OMA minus TDP specs to guarantee link performance.
2. The eye diagram is tested with 1000 waveform.
Digital Diagnostic Functions
The following digital diagnostic characteristics are defined over the normal operating conditions unless otherwise specified.
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ParameterSymbolMinMaxUnitNotes |
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Temperature monitor absolute error |
DMI_Temp |
-3 |
3 |
degC |
Over operating temp |
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Supply voltage monitor absolute error |
DMI _VCC |
-0.1 |
0.1 |
V |
Full operating range |
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Channel RX power monitor absolute error |
DMI_RX |
-3 |
3 |
dB |
Per channel |
|
Channel Bias current monitor |
DMI_Ibias |
-10% |
10% |
mA |
Per channel |
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Temperature monitor absolute error |
DMI_Temp |
-3 |
3 |
degC |
Over operating temp |
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