Thank you Abhishek for your help and appericiated us.The modified file give acceptable window and the wavwlengths you used almost in c band. results for downstrean as well as upstream.Can i ask just for knowlegde why insertion losses are kept 0dB? Since every component have rheir own losses and these have to included for somewhat praticality of the system.
Other question is for shaid,iiwithout attaching soa i got good results then with attaching it.So it would better to use simple system than soa which in turn decrease the performance.I tried same system with optical amplifier and results are far more better than current scenario.C band also called erbium window ,better to use edfa .But if your reference is using soa than with proper specification you can use it.