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+//Fiber Optics Communication Technology, by Djafer K. Mynbaev and Lovell L.scheiner
+//Windows 8
+//Scilab version- 6.0.0
+//Example 5.3.4
+clc;
+clear;
+//given
+
+Dpmd=0.5;//polarization mode dispersion coefficient in ps/sqrt(km)
+L=100;//fiber length in km
+deltatpmd=Dpmd*sqrt(L);//Pulse spreading due to PMD in ps
+
+mprintf("Pulse spread caused by PMD for single mode fiber= %.0f ps",deltatpmd);