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+//OptoElectronics and Fibre Optics Communication, by C.K Sarkar and B.C Sarkar
+//Example 11.5
+//OS=Windows 10
+////Scilab version Scilab 6.0.0-beta-2(64 bit)
+clc;
+clear;
+
+//given
+n1=1.45//refractive index of core
+delta=0.01;//relative refractive index difference
+Br=100e6;//data rate in bps
+C=3e8// velocity of light in m/s
+delta_ts=8e-9//silica fiber link rise time in s
+lambda=830e-9//wavelength in m
+delta_lambda=40e-9//spectral width in m
+delta_tr=10e-9//rise time in 10ns
+M=0.024//silica fiber parameter
+L=2.5e3//length of link in m
+delta_tmodal=3.5e-9*L/1e3//intermodal dispersion delay in s
+delta_tmat=(-L/C)*(delta_lambda/lambda)*(M)//material dispersion in s
+delta_tsys=1.1*sqrt(delta_ts^2+delta_tr^2+delta_tmat^2+delta_tmodal^2)//system delay in s
+BT=0.7/delta_tsys//Max bit rate for RZformat
+mprintf("\n Max bit rate for RZ format is=%.2fx10^6 bps",BT/1e6);//division by1e6 to convert the unit from bps to *10^6
+BT=0.35/delta_tsys//Max bit rate for NRZformat
+mprintf("\n Max bit rate for NRZ format is=%.2fx10^6 bps",BT/1e6);
+// the answer differ because of roundoff