It’s a Way of increasing the bandwidth used by the WDM technology.
We have 3 types of bandwidth.
C band that support 80 channels.
Extended c band that support 96 channels.
Super c band that can support 120 channels.
channel spacing is 50 GHz.
using the super c band can improve the below paramters:
system capacity by 40 %
Transmission distance up to 2000 km
Credits: 
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|---|---|---|---|---|
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