掺铒光纤放大器的非线性色散效应

给出一种模型来考虑非线性色散对光通信系统的影响。数值结果表明 ,考虑非线性色散时 ,光脉冲的传播速度比不考虑非线性色散时的传播速度要快 ,而脉冲展宽是一样的

Effects of Nonlinear Dispersion in EDFA'S

The signal-induced change of the refractive index in an erbiumdoped fiber amplifier (EDFA) causes a phase modulation imposed in a signal when passing the EDFA. In this paper,we apply our extended EDFA model in an optical communication system. The model includes this phase modulation, by including nonlinear dispersion in a EDFA,and spontaneous emission noise. The "one"with nonlinear dispersion is accelerated and reaches the receiver earlier than the "one" without nonlinear dispersion. However, the impulse shape does not change with nonlinear dispersion.