Abstract:
The demand was exceeded forspeed to transmitting data,capacityand low cost that meansthere was a problem.Theoffers solution of limitationfield in optical networks usingWavelength Division Multiplexing to increase the capacity and find the most cost-effective combination by designing four scenario unidirectional optical fiber(2,4, 6, and 8) users. In scenario four used Eridium Doped Fiber Amplifier to evaluate the system performance and study the effect ofdifference fiberlength on the quality factor and bit error rate. The simulation was donein Optisystem 7.0 programs,when increasing the distance, the quality factor decreases and the bit error rate increases for a different scenarios, Eribum Dopted Fiber enhances the quality factor and minimized Bit Error Rate.