对影响高速率通信传输距离容限的入纤光功率进行了详细分析, 针对入纤光功率受限问题, 提出了一种基于远端铒纤放大(REOA)的系统解决方案, 提高了高速率传输系统的等效入纤光功率, 从而提高了系统的传输距离容限, 并且理论分析了该系统方案的等效入纤功率与REOA前段光纤的损耗和REOA的输出功率有关。通过单载波400 Gb/s速率传输试验证实: REOA系统比普通系统的等效入纤光功率提高了14.27 dB, 单跨距传输系统链路长度提高约70 km。

The influence of incident optical power on the transmission distance tolerance of high-rate communication is analyzed. In order to solve the problem which limits the incident optical power, a system solution based on remote Er-doped amplification technology(REOA) is proposed, which improves the equivalent incident optical power and the transmission distance tolerance greatly. It is theoretically analyzed that the equivalent incident optical power is related to the loss of the fiber in the front of REOA and the output power of REOA. The experiment of 400 Gb/s transmission demonstrates that the equivalent incident optical power of REOA system is 14.27 dB higher than that of conventional system, and the transmission distance is extended by about 70 km.