Hi Ranjeet
No thats not what i mean.Infact AWGs are being mostly used to implement the DWDM systems.This popularity is largely due to the fact
that AWG-based devices have been proven capable of precisely demultiplexing a high number of optical signals (carrying information at various wavelengths) with relative low loss.
So try designing your system using AWG.Infact the integration of the AWG offers many advantages such as compactness and reliability which are also the important requirements of any system design.
Regards