Performance analysis of PAM intensity modulation based on dispersion compensation fiber technique for optical transmission system

In this paper, study and analysis the performance of intensity modulation based on Pulse Amplitude Modulation (PAM) under three different schemes of dispersion compensation fiber (pre, post and symmetrical) is presented. The low cost proposed fiber links consists of single mode fiber connected to the one of dispersion compensation setups. Fiber dispersion plays the impact factor to limit the performance of optical link such as the length of the transmission distance. PAM format to carry (1 Gb/s) data in various lengths of single mode fiber under three configurations of dispersion. Compensation fiber is proposed to compensate the chromatic dispersion. The comparative study of the systems leads to optical modulation involving the suitable dispersion compensation configuration. The results are reported in terms of Quality Factor and Bit Error Rate. The results showed that the efficient optical communication system which is based on the symmetrical configuration has the best performance over different distances in the range of input power from (0 dBm to 10 dBm) at (1 Gb/s) data rate standard single channel optical fiber transmission system.