SPM对啁啾超高斯脉冲频谱演变的影响  

Influence of self-phase modulation on the evolution of spectra of chirp super-Gaussian pulse

作　　者：任志君[1] 周卫东[1] 陈海云[1] 应朝福[1] 

机构地区：[1]浙江师范大学信息光学研究所,浙江金华321004

出　　处：《激光杂志》2008年第5期31-32,共2页Laser Journal

基　　金：浙江省教育厅科研项目(20050275);国家自然科学基金资助项目(60477039)资助

摘　　要：本文通过理论计算,给出了带有初始啁啾的超高斯脉冲由于SPM影响所致的频谱表达式。在此表达式的基础上,利用数值模拟的办法,对照分析了初始啁啾对超高斯脉冲频谱演变的影响。研究结果表明:初始啁啾非常明显的影响超高斯脉冲的频谱,初始正啁啾加剧频谱展宽,初始负啁啾减小频谱展宽。可见,引入初始负啁啾有利于优化超高斯脉冲传输系统的性能。The spectra expression of chirp super-Gaussian pulse resulting in self-phase modulation is theoretical derived.The Influence of initial chirp on the spectra s evolution of super-Gaussian pulse is analyzed using numerical simulation on the basis of theoretical expression.The research result shows：the spectra of super-Gaussian pulse are obvious influenced by initial chirp,and the positive and negative initial chirp increase and decrease the broadening of spectra,respectively.So,the performance of transmission system cam be optimicared by intrndueing the initial negative chirp when super - Gaussian pulse transmitting in fiber.

关 键 词：超高斯脉冲 频谱 自相位调制 初始啁啾 

分 类 号：TN253[电子电信—物理电子学]