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给出了一种全光通信网波长域计算机模拟方法,模拟了波分复用信号经过3个光分插复用节点后的信号及放大自发辐射积累的光谱图,并与实验结果进行了对比。计算了波分复用信号经过50个光分插复用节点极限情况下的信噪比,结果表明放大自发辐射噪声积累造成的信噪比下降仍然可以保证接收机在10Gbs时的误码率小于10-9。这些结果可以被应用到未来国家或地区级全光通信网中。
An all-optical communication network wavelength domain computer simulation method is given to simulate the WDM signal through three optical add / drop multiplexer nodes and amplify the spectrum of spontaneous emission accumulation, and compared with the experimental results . The signal-to-noise ratio of the WDM signal under the limit of 50 optical add / drop multiplexing nodes is calculated. The results show that the SNR degradation caused by the accumulation of spontaneous emission noise can still ensure that the BER of the receiver is less than 10Gbs 10-9. These results can be applied to the future national or regional all optical communications network.