初始啁啾和光纤损耗对皮秒脉冲孤子效应压缩的影响

运用分步傅立叶方法数值模拟了皮秒脉冲在单模光纤中的传输 ,计算和分析了初始啁啾和光纤损耗对皮秒脉冲孤子效应压缩的影响。结果表明 ,两者对具有一定峰值功率的脉冲孤子效应压缩的影响具有互补性 ,即两者对脉冲压缩的作用相反。进一步研究表明 ,对在损耗光纤中传输的皮秒脉冲 ,如果给其加适当大小的初始啁啾将得到很好的压缩效果

Effects of Initial Chirp and Fiber Loss on Soliton-effect Picosecond Pulse Compression in Optical Fibers

As the fiber loss is considered,the effects of initial chirp and fiber loss on the quality of soliton effect picsecond pulse compression are analyzed by simulating numerically the transform of picsecond pulse in fibers with the method of split step Fourier.By analyzing the changes of compression factor,optimum fiber length,and compression quality factor,we have found that initial chirp and fiber loss took contrary action on the compression of the picsecond pulses that have certain peak power.Further study show that good compression effect will be obtained if proper initial chirp is added on pulse.