Hi! Shaid,I have gone through the whole discussion and found that you have realized good TWDM system as i can see from the file you have attached.Sam and Alistu assisted you in a good manner,thanks to senior forum members.Now from your file without SOA, your results are good and when SOA is attached, results degraded.Suggestion from my side is,go for the papers as Sam mentioned , and try to find out parameters of SOA amplifier.Besides that, i also calculated your system with EDFA and it works fine.Major issue here is a setting of parameters in traveling wide band SOA.You need to work on injection current,Active length and confinment factor etc to get good results.Meanwhile i will try to optimize these parameters by iterating for some values and get back to you.
Thank you