// Example 4.11 //compare the total first order dispersion clc; clear; close; so=0.095;//ps nm^-2 km^-1 h=1270;//in nm ho=1320;//in nm dt1=((h*so)/4)*((1-(ho/h)^4));// in ps nm^-1 km^-1 h1=1520;//in nm dt21=((h1*so)/4)*((1-(ho/h1)^4));// in ps nm^-1 km^-1 dt2=dt21-(13.5+4.1);// in ps nm^-1 km^-1 disp(dt1,"first order dispersion at wavelength 1270nm in ps nm^-1 km^-1") disp(dt2,"first order dispersion at wavelength 1320nm in ps nm^-1 km^-1") //answer is wrong in the textbook