论文部分内容阅读
超宽带技术(UWB)在无线通信、雷达、传感等多个领域有着重要的应用,由低损耗、高带宽的光纤传输的UWB光传输系统,即UWB over fiber,是目前国内外研究的热点课题,如何在光域中生成UWB信号是该系统的关键技术之一。为此提出了一种利用半导体光放大器(SOA)的交叉增益调制(XGM)效应和布拉格光纤光栅(FBG)光学生成UWB信号的方法并进行了仿真实验,得到了符合FCC标准的中心频率为4.6 GHz,-10 dB带宽为135%的UWB信号。最后分析了该方法存在的问题。
UWB has important applications in many fields such as wireless communication, radar and sensing. UWB over fiber, which is transmitted by low loss and high bandwidth optical fiber, is the hotspot of research at home and abroad Project, how to generate UWB signal in the light domain is one of the key technologies of the system. For this reason, a method of optically generating UWB signal using cross-gain modulation (XGM) effect of a semiconductor optical amplifier (SOA) and fiber Bragg grating (FBG) is proposed and a simulation experiment is carried out. The FCC center frequency is 4.6 GHz, UWB signal with -10 dB bandwidth of 135%. Finally, the problem of this method is analyzed.