100G QSFP28 SR4 Optical Transceiver

Parameter
Unit
Min.
Typical
Max.
Notes
Transmitter
TX Central Wavelength
nm
840
850
860
Spectral Width (RMS)
nm
0.6
Average Launch Power, each lane
dBm
-8.4
2.4
Optical Modulation Amplitude (OMA)
dBm
-6.4
3.0
Average Launch power Tx_off
dBm
-30
Extinction Ratio
dB
2
Optical Return Loss Tolerance
dB
12
1
Encircled Flux
>86% at 19 um <30% at 4.5 um
Transmitter eye mask definition {X1, X2, X3, Y1, Y2, Y3}Hit ratio 5×10–5 hits per sample
{0.3, 0.38, 0.45, 0.35, 0.41, 0.5}
Receiver
RX Central Wavelength
nm
840
850
860
Overload Input Optical Power
dBm
2.5
Average Receive Power per Lane
dBm
-10.3
2.4
Receive Power (OMA) per Lane
dBm
3
Receiver Reflectance
dB
-12
Stressed Receiver Sensitivity (OMA) per Lane
dBm
-5.2
Stressed Conditions:
dBm
-30
Stressed Eye Closure
dB
4.3
Stressed Eye J2 Jitter
0.39
Stressed Eye J4 Jitter
0.53
OMA of each aggressor lane
3
Stressed Receiver Eye Mask Definition {X1, X2, X3, Y1, Y2, Y3}
{0.28,0.5,0.5,0.33,0.33,0.4}
LOS Assert
dBm
-30
LOS De-Assert
dBm
-12
LOS Hysteresis
dB
0.5