Comparative Analysis of Dispersion Compensating Fiber in DWDM System Using 10 Gbps and 40 Gbps Bit Rate

Abstract

Chromatic dispersion becomes non-negligible in high bitrate and long-haul optical transmission that is necessary to compensate to maintain the system performance. One of the most effective and practical ways to compensate the chromatic dispersion is through Dispersion-Compensating Fiber (DCF) implementation for its negative dispersion to reduce the positive one in optical transmission. This paper presents the DCF implementation in DWDM transmission with bitrate and optical launch power variation. The DWDM model using 16 channels with channel spacing of 200 GHz, 300 km optical transmission length, and Erbium Doped Fiber Amplifier (EDFA) was implemented in OptiSystem. The system performance comparison was observed with bit error rate (BER), Q-factor, and received power for variation of the optical power launch -4, -2, 0, 2, 4, 6, 8, and 10 dBm at bitrate 10 Gbps and 40 Gbps. Based on the results, all of the 16 channels using DCF at bitrate 10 Gbps and 40 Gbps completely reduced the dispersion. The optical power launch remarkably affected the system performance in high bitrate.