The need for high capacity long haul telecommunication system to carry huge traffic demands in recent times
has lead to the use of optic fiber communication system because of its high capacity carrying advantage over
wireless systems. But optic fiber signals suffer some signal impairment issues such as nonlinearity which tends
to degrade its transmission performance. This paper proposed the use of adaptive optical equalizer to mitigate
such impairments. To achieve that, a simulink model of the system was first developed for simulation
experiments. Then the impact of out-of-bound nonlinear signal on the three key performance indicators (Q
Factor, Bit Error Ratio and Eye Height) studied was evaluated. An adaptive optical equalizer system was them
applied to the network and measurements of the effect of the presence of the adaptive equalizer in an out-of -
bound nonlinear environment was taken for the three key performance indicators. When the new results were
compared with that of the previously evaluated data (without the adaptive equalizer), it was observed that the
presence of adaptive equalizer brought a great improvement on the system, which was attributed to the
mitigating effect of the equalizer. Thus it was concluded that in an out-of -bound nonlinear environment,
adaptive equalization can be used to mitigate the effect of nonlinear signal thereof.