Impact of PMD on Distributed Raman Amplifiers Using Modern Transmission Fibres
The authors experimentally and numerically investigate Raman amplification and polarization mode dispersion PMD effects on a channel using two fibres of PMD coefficient 0.01pskm-1/2 and 0.1pskm-1/2 respectively. Two pumping configurations were employed to evaluate the signal gain and OSNR over a range of wavelengths. Using a Non-Return to Zero (NRZ) data format the quality of the signal was simulated. It was found that under the same conditions the fibre with lower PMD coefficient had superior performance in the forward pumping scheme. In the backward pumping configuration the fibre with a relatively high PMD coefficient had better noise performance.