// Example 8.10 //optical power budget clc; clear; close; mip=-10;//dBm mop=-41;//dBm tsm=mip-mop;//dB disp(tsm,"total system margin in dB is") l=7;//km fcl=2.6;//dB lfc=l*fcl;//fiber cable loss in dB sl=0.5;//dBm slc=sl*(l-1);//dB cl=1.5;//dB sm=6;//dB tsm1=lfc+slc+cl+sm;//dB disp(tsm1,"total system margin in dB is") epm=tsm-tsm1;//dB disp(epm,"excess power margin in dB is")