Generation and propagation of subpicosecond pulse train  

作　　者：张华峰 王娟芬 李录 贾锁堂 周国生 

机构地区：[1]College of physics and Electronics Engineering, Shanxi University, Taiyuan 030006, China

出　　处：《Chinese Physics B》2007年第2期449-455,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Grant No 60477026）.

摘　　要：Higher-order nonlinear Schrodinger equation with the Hirota constraint conditions is considered, and an analytic solution, which can describe the modulational instability process, is presented. Based on the solution, a new pulse train without continuous wave （CW） background is generated in quadratures and the propagation of the pulse train is discussed in detail by simulating numerically. The results show that, unlike the propagation of the picosecond pulse train, under the effects of the higher-order terms, the pulse train cannot propagate along the fibre when the energy is very high; however, for some medium energy the pulse train can stably propagate. We also investigate the stability of the pulse train against violation of the Hirota conditions, and the results show that the pulse train can still propagate stably when the Hirota conditions are broken.Higher-order nonlinear Schrodinger equation with the Hirota constraint conditions is considered, and an analytic solution, which can describe the modulational instability process, is presented. Based on the solution, a new pulse train without continuous wave （CW） background is generated in quadratures and the propagation of the pulse train is discussed in detail by simulating numerically. The results show that, unlike the propagation of the picosecond pulse train, under the effects of the higher-order terms, the pulse train cannot propagate along the fibre when the energy is very high; however, for some medium energy the pulse train can stably propagate. We also investigate the stability of the pulse train against violation of the Hirota conditions, and the results show that the pulse train can still propagate stably when the Hirota conditions are broken.

关 键 词：modulational instability subpicosecond pulse train Hirota equation 

分 类 号：TN25[电子电信—物理电子学]