OutputPort1 = InputPort1;

L=200;
beta2=-20;

for i = 1:length(InputPort1.Sampled.Signal)
OutputPort1.Sampled.Signal(i)=InputPort1.Sampled.Signal(i)*exp(1j*beta2*L/2*InputPort1.Sampled.Frequency(i)*InputPort1.Sampled.Frequency(i));;
end