利用非线性光学环镜(NOLM),提出了一种基于半导体光放大器(SOA)的交叉相位调制(XPM)效应生成超宽带(UWB)信号的方法,设计了系统结构,并进行了仿真实验,得到了中心频率约为6.7GHz、相对带宽约为161%的UWB信号,该信号符合美国联邦通信委员会(FCC)标准,从而验证了该方法的可行性。另外,所生成的UWB信号的中心频率及带宽还具有可调性。 A nonlinear optical ring mirror (NOLM) is proposed to generate UWB signals based on cross-phase modulation (XPM) effect of semiconductor optical amplifier (SOA). The system structure is designed and simulated. The UWB signal with a center frequency of about 6.7GHz and a relative bandwidth of about 161% is obtained, which is in line with the Federal Communications Commission (FCC) standard, which verifies the feasibility of this method. In addition, the center frequency and bandwidth of the generated UWB signal are also adjustable.