Features
Ø Compliant
with QSFP28 Standard:
SFF-8665 Revision 1.9 with timing in table 7 and 8 in this document , SFF-8636
Revision 2.10a
Ø
Compliant with IEEE 802.3cn 50GBASE-LR
Ø
Compliant with IEEE802.3
50GAUI-2 C2M electrical interface
Ø Single 3.3V Supply Voltage
Ø Maximum
power consumption 4.5W
Ø 0-70 ºC Case Operating Temperature
Ø
EML laser and PIN Receiver
Ø
QSFP28 MSA package with duplex
LC connector
Ø Two
Wire Serial Interface with Digital Diagnostic Monitoring
Ø Complies
with EU Directive 2011/65/EU (RoHS compliant)
Ø Class 1
Laser
Application
► Fiber Channel Switch Infrastructure
► Router/Server interface
► Other optical transmission systems
Optical
and Electrical Characteristics
Transmitter Optical Specifications
Parameter
|
Symbol
|
Min.
|
Typical
|
Max.
|
Unit
|
Notes
|
Wavelength
|
λ
|
1304.5
|
1311
|
1317.5
|
nm
|
|
Side-mode
suppression ratio
|
SMSR
|
30
|
|
|
dB
|
|
Average launch
power
|
POUT
|
-4.5
|
-
|
4.2
|
dBm
|
|
Average launch
power of OFF transmitter
|
POUT_OFF
|
-
|
-
|
-30
|
dBm
|
|
Outer Optical
Modulation Amplitude (OMAouter)
|
POUTL
|
-1.5
|
-
|
4
|
dBm
|
|
Extinction ratio
|
ER
|
3.5
|
-
|
-
|
dB
|
|
Launch power
in OMAouter minus TDECQ
|
OMA-TDECQ
|
-2.9
|
-
|
-
|
dBm
|
|
Transmitter
and dispersion eye closure for PAM4 (TDECQ)
|
TDECQ
|
-
|
-
|
3.2
|
dB
|
1
|
Spectrum
wavelength
|
λ-20
|
-
|
-
|
1
|
nm
|
|
Optical return
loss tolerance
|
ORLT
|
-
|
-
|
15.6
|
dB
|
|
RIN15.6OMA
|
RIN
|
-
|
-
|
-132
|
dB/Hz
|
|
Transmitter reflectance
|
|
-
|
-
|
-26
|
dB
|
|
1. Measured
with a PRBS215-1 test pattern @53.125Gbps, 10km fiber.
Receiver Optical Specifications
Parameter
|
Symbol
|
Min.
|
Typical
|
Max.
|
Unit
|
Notes
|
Wavelength
|
λ
|
1304.5
|
1311
|
1317.5
|
nm
|
|
Receiver
sensitivity (OMAouter)
|
|
|
|
max(–8.4; SECQ – 9.8)
|
dBm
|
1
|
Stressed
receiver sensitivity (OMAouter)
|
-
|
-
|
-
|
-6.6
|
dBm
|
2
|
Conditions of
stressed receiver sensitivity test:
|
|
Stressed
eye closure for PAM4 (SECQ)
|
-
|
-
|
-
|
3.2
|
dB
|
|
Damage
Threshold
|
P_damage
|
5.2
|
-
|
-
|
dBm
|
|
Average Receive
Power
|
-
|
-10.8
|
-
|
4.2
|
dBm
|
|
Receive power
(OMAouter)
|
OMA
|
-
|
-
|
4
|
dBm
|
|
Receiver
Reflectance
|
RXR
|
-
|
-
|
-26
|
dB
|
|
LOS assert
|
LOSA
|
-30
|
|
|
dBm
|
|
LOS de-assert
|
LOSD
|
|
|
-11
|
dBm
|
|
LOS hysteresis
|
LOSH
|
0.5
|
|
|
dB
|
|
1. IEEE 802.3cn clause 139 equation 139-2.
2. Measured with a PRBS231-1 test pattern @53.125Gbps, BER≦2.4E-4.