论文部分内容阅读
串扰是波分复用光网络中限制光分插复用器容量的一个重要因素 .文中分析了相干和非相干串扰对通过 OADM节点的光信号的影响 ,给出了固定和最佳判决门限两种情况下的光功率恶化 ,并仿真模拟了串扰引入的功率恶化随复用波长数、解复用器隔离度和节点下路波长数的变化情况 ,结果表明相干串扰对系统的影响很大 .与固定判决相比 ,采用最佳判决可以降低串扰影响 .另外采用滤波器也可以抑制串扰 .
Crosstalk is an important factor that limits the capacity of optical add / drop multiplexer in WDM networks.In this paper, the influence of coherent and non-coherent crosstalk on optical signals passing through OADM nodes is analyzed, and the fixed and optimal decision thresholds of two The optical power is deteriorated. The power degradation caused by crosstalk is simulated with the change of multiplexed wavelength, the isolation of demultiplexer and the wavelength of nodes dropped off. The results show that the influence of coherent crosstalk on the system is great. Compared with the fixed decision, the best decision can be used to reduce the impact of crosstalk. In addition, the filter can also suppress crosstalk.