What is the difference between Class B+ C+ and C++ GPON SFP Module?
The main difference is the output optical power. Class C++ GPON SFP module output optical power is about 7dBm, the Class C+ GPON SFP module output optical power is about 5dBm. Of course, their optical receiver sensitivity is also different. The Class C++ optical receiver sensitivity is best.
The detail specification parameter table comparision as below:
GPON SFP modules
|
Type
|
Class B+ GPON SFP module
|
Class C+ GPON SFP module
|
Class C++ GPON SFP module
|
|
wavelength
|
Tx：1490nm
|
Tx：1490nm
|
Tx：1490nm
|
|
Rx：1310nm
|
Rx：1310nm
|
Rx：1310nm
|
|
rate
|
Tx：2.488Gbit/s
|
Tx：2.488Gbit/s
|
Tx：2.488Gbit/s
|
|
Rx：1.244Gbit/s
|
Rx：1.244Gbit/s
|
Rx：1.244Gbit/s
|
|
Mini Output Power
|
1.5dBm
|
3dBm
|
6dBm
|
|
Mini Output Power
|
5dBm
|
7dBm
|
10dBm
|
|
Optical Receiver Sensitivity
|
-28dBm
|
-32dBm
|
-35dBm
|
|
Optical Connector
|
SC
|
SC
|
SC
|
|
Fiber type
|
Single mode
|
Single mode
|
Single mode
|
|
Receiver Overload
|
-8dBm
|
-8 dBm
|
-15dBm
|
|
Extinction Ratio
|
10dB
|
10dB
|
8.2dB
|