Dear sir D.Marek
I am proceeding as follows with reference to the screen shot of the simulation attached.
1.In layout=>Parameters=>Noise Tab=>Convert noise bins Check Box while selecting Mode is NORMAL.
2.In all components in set up like OPTICAL FIBER/OPTICAL AMP/DCF/HNLF/OBPF i did as Component properties=>Noise=>Check box convert noise bins while selecting normal mode.
i am still getting the same noise bins
what is the problem???
regards
jawad