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//Caption:Program to determine the BDP of SMF system and DS SMF system using DFB LD
//Example 8.3
//Page 393
//Refer to table 8.1 on page 392, also to figure 8.6 on page 391
smf=16
smf=16//dispersion co-efficient of SMF at 1550nm
sw=0.4//spectral width of the source
BDP=[250/(smf*sw)]//assuming line code as NRZ
disp('The BDP of the DS SMF system is determined as')
smf=3.5//dispersion co-efficient of DS SMF at 1550nm
BDP=[250/(smf*sw)]//assuming line code as NRZ
//Result
//BDP = 39 Gbps=km (SMF)
//BDP = 179 Gbps-km (DS SMF)
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