Özet:
Recently, fiber optic networks are widely used because it has high data rate, capacity and could
life along more than 20 years and it can reach a far distance.
Passive optic networks offered high capacity and better performance according to the data rate
and bandwidth and then reduced consumption of fiber optic (i.e., length, cables) and increase the
capacity of customers. There are more techniques that expansion the spread spectrum of fiber
optic included Time Division Multiplexing (TDM) and Wavelength Division Multiplexing
(WDM). This thesis focuses in the comparison between TDM/WDM according to the quality
factor and bit error rate with distance (length of fiber optic) by utilizing of the Opti-system
software. the WDM outperform than TDM with the fiber length increasing.
