// Example 4.13;//Maximum bit rate clc; clear; close; L=20;//Length in km Dt2=300*10^-12;//Birefringent in second per kilometer B=(0.9)/(Dt2*L*10^3);// Btm= round((B/0.55)*10^-3);// maximum bit rate in kilo bit per second disp(Btm,"maximum bit rate in kilo bit per second")