DefinePK

Abstract

The majority of telecommunication service providers use DWDM systems which allow expansion of existing capacity without laying additional fiber optic cables. For the successful transmission of optical signals over long distance single mode fibers and EDFA are used. The performance is degraded if single mode fiber is used because of nonlinear effects like dispersion, FWM etc. To ensure the communication quality, reduction of these nonlinear effects becomes essential. This paper proposes a novel design technique which aims at improvement in performance of a DWDM system by the usage of hybrid amplifier and dispersion compensated fiber. Performance of the proposed system is analyzed for different fiber length of 50km, 80km and 100km. Optisystem 13.0 is the software used for the analysis of the design study. The results obtained shows that the Q- factor is very much enhanced by the proposed system while BER is very much reduced. The impact of the fiber length studied here shows that if the fiber length is increased beyond 80km the Q- factor is very much degraded and BER is increased.