基于SOA-XGM的超宽带脉冲信号的光学产生法  

An Optical Generation Method for Ultra-Wide-Band Pulse Signal Based on SOA-XGM

作　　者：杨晓雪[1] 陈新桥[1] 陈鑫[1] 

机构地区：[1]中国传媒大学信息工程学院,北京100024

出　　处：《光纤与电缆及其应用技术》2011年第4期43-46,共4页Optical Fiber & Electric Cable and Their Applications

摘　　要：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。Ultra-wide-band （UWB） technology has important applications in the fields of wireless communications, radar, and sensing, etc. The UWB optical transmission system that uses low loss, high bandwidth optical fiber （UWB over fiber） is a hot topic both at home and abroad, in which one of the key technologies is the generation of UWB signal. As a result an approach which utilizes cross-gain modulation （XGM） effect of semiconductor optical amplifier （SOA） and fiber Bragg grating （FBG） to optically generate UWB signal is proposed and simulated in experiment, thereby obtaining the UWB signal which is in accordance with FCC standard and has central frequency of 4. 6 GHz, and --10 dB bandwidth of 135%. Finally the problems existed in that method are analyzed.

关 键 词：超宽带信号 超宽带信号光纤传输 半导体光放大器 交叉增益调制 光纤布拉格光栅 

分 类 号：TN925[电子电信—通信与信息系统]