HELLO ZAKARYA SAIDI..
Well you have made an important point here..you know it was discussed in some post regarding selection of bandwidth of WDM multiplexer and it was mentioned there the performance gets better with increasing the bandwidth but explanation was given on basis of simulation..the theoretical reason was not mentioned..here i would like to ask u if u can share that paper where bandwidth is set based ob bit rate…
it will be highly helpful..
Thanks & regards