Optimized gain EDFA of different lengths with an influence of pump power

Abstract

This Paper describes the simulation models of EDFA(Erbium Doped Fiber Amplifier) of different Lengths(10m, 50m and 120m) with optimized Gain and maintained noise figure is obtained using single pumping with the wavelengths 980nm or 1480nm and the results are plotted with an influence of various Pump power. In DWDM networks EDFA'S are an imperative elements and are regarded as a cost effective replacement of classical optoelectronic regenerative repeaters EDFA plays an important role in improvement of performance of optical fiber transmission systems. The proposed model consists of Input source with multiple channels, pumping source with the wavelengths 980nm or 1480nm and Isolator. The Erbium doped fiber amplifier's gain which appears in the signal to noise ratio expression is computed from the simulation. The resulting models accurately represent EDFA optimized gain. Simulation results, EDFA length of 10m and with 980nm pump of power 0.22W gives the gain of 40.17DB and for the same length of EDFA with 980nm pump of power 0.62W gives the optimized gain of 44.3DB and also with 980nm pump of power 1W gives the maximum optimized gain of 46DB and compared the results of Gain and noise figure with the wavelength of 1480nm and also with different lengths. This is applicable in Network reconfiguration and Multi-vendor networks and also addition of new services and wavelengths.