HI YASIR
First of all thank you so much for your efforts..The formulae you have shared i have already come across these..i am doubtful about the value of system margin…i mean how do we set it in optisystem or how we know it is +4.1 in the case you have shared..is there a definite formula to calculate the system margin or it is us who choose it..please can u tell me a bit more..i wud be grateful..
Thanks and regards