Power compensation is the main challenging issue for dense optical communication system because it affects the signal strength, and subsequently, performances of the received signals are degraded. So in this recommended research work, we have resolved this challenge for 12-Gbps dense communication systems (DWDM) with 80 channels using the three power compensation approaches (pre-power compensation, post-power compensation, and symmetrical power compensation). Further, power amplification has also been established with EDFA for the communication distance of 120 km. Furthermore, an analysis has been performed considering the two aspects of zero water peak fiber and nonzero dispersion-shifted fiber to get the required outcomes in terms of quality factor, output power, eye closure, and bit error rate, respectively. Final results have recommended that pre-power compensation is most appropriate for long-distance communication, while post-power compensation and symmetrical power compensation are also most suitable for short-distance communication.

中文翻译：

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使用光放大器的80×12 Gbps DWDM系统补偿技术的性能分析

对于密集的光通信系统来说，功率补偿是主要的挑战性问题，因为它会影响信号强度，随后接收信号的性能会下降。因此，在这项推荐的研究工作中，我们使用三种功率补偿方法（功率前补偿，功率后补偿和对称功率补偿）解决了具有80个通道的12 Gbps密集通信系统（DWDM）的挑战。此外，还通过EDFA建立了120 km的通信距离的功率放大。此外，已经进行了分析，其中考虑了零水峰光纤和非零色散位移光纤这两个方面，以分别在质量因子，输出功率，眼图闭合和误码率方面获得所需的结果。