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数值模拟了强度调制光信号在级联光纤放大器普通单模光纤通信系统中的传输，模拟中主要考虑了自相位调制、群速色散和自发辐射噪声，使用负色散补偿光纤去补偿群速色散和自相位调制。结果表明，若色散得到很好补偿，当放大器间距减少到５０ ｋｍ 时，无误码２ ０５０ ｋｍ 传输是可能的。
The intensity modulated optical signal is numerically simulated in a single-mode optical fiber communication system of a cascaded fiber amplifier. In the simulation, self-phase modulation, group velocity dispersion and spontaneous emission noise are considered. The dispersion compensation fiber is used to compensate the group velocity dispersion and Self-phase modulation. The results show that if the dispersion is well compensated, it is possible to transmit an error-free 2 050 km when the amplifier spacing is reduced to 50 km.