I am not very sure of what you want to do exactly, but from what i suspected, you want to implement spectrum slicing based on the super continuum principle due to self phase modulation. In this regard the idea is to slice equally the broadened pulse due to SPM. Further from your layout, I am not sure but I suspect you want to implement Spectrum slicing WDM.
If that be the case, then try the following:
1: The frequency of the OGPG should be the same as that of the AWG, MUX, and deMUX
2: The first AWG should be a slicer, that separates various slices
3: This is immediately followed by data modulation
4: The ES MUX can now multiplex the modulated slicies
5: Transmit in the optical fiber
Similarly at the receiving end, your deMUX should be set at the same frequency as the OGPG, AWG and MUX. just take note of the frequency spacing in order to extract exact slices.
One more point with WDM, you will also have to play around with the bandwidth of the MUX and deMUX to arrive at the one which will give you stisfactory results.
Goood luck, all the best
.
.