自相位调制的频谱展宽研究  

SPM-induced spectral broadening

作　　者：朱莉娟[1] 

机构地区：[1]南京邮电大学电子科学与工程学院,江苏南京210003

出　　处：《光通信研究》2009年第5期30-32,共3页Study on Optical Communications

摘　　要：光纤中的自相位调制(SPM)会导致光脉冲的频谱展宽。文章作者通过调整光纤参数和光脉冲参数,利用OptisyStem软件成功地模拟出了SPM效应,并详细分析了光纤长度、峰值功率、脉冲形状和初始啁啾等参数对SPM谱的影响,观察到了负的初始啁啾使光纤输出端的脉冲频谱窄化的现象。Self-Phase Modulation （SPM） in optical fibers tends to result in the spectral broadening of optical pulses. In this paper, SPM effect is simulated in Optisystem by adjusting the parameters of fibers and optical pulses, the influences of such parameters as fiber length, peak power, pulse shape and initial chirps on SPM spectrum are analyzed in detail and a phenomenon of spectral narrowing at the fiber output end caused by the negative initial chirp is observed.

关 键 词：自相位调制 频谱展宽 高斯脉冲 超高斯脉冲 啁啾 

分 类 号：TN915[电子电信—通信与信息系统]