Dynamics of Spatial Dark Solitons Trapped in the Media with Gain and TPA  

作　　者：刘凌虹 颜家壬 唐政华 

机构地区：[1]Institute of Physics, Hunan Normal University, Changsha 410081

出　　处：《Chinese Physics Letters》2005年第10期2578-2581,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 10375022.

摘　　要：The propagation of dark solitons in nonlinear media that include gain and Joss described by a nonlinear Schroedinger equation is investigated. Based on the direct approach of perturbation theorv, the width, height and other related quantities of dark solitons are obtained. It is shown that stationarv propagation of dark solitons is found to be possible in the presence of both gain and absorption. The results obtained by means of our analytic method are in excellent agreement with numerical simulations. Our results are helpful for the research into the optical soliton transmission system.The propagation of dark solitons in nonlinear media that include gain and Joss described by a nonlinear Schroedinger equation is investigated. Based on the direct approach of perturbation theorv, the width, height and other related quantities of dark solitons are obtained. It is shown that stationarv propagation of dark solitons is found to be possible in the presence of both gain and absorption. The results obtained by means of our analytic method are in excellent agreement with numerical simulations. Our results are helpful for the research into the optical soliton transmission system.

关 键 词：DISPERSIVE DIELECTRIC FIBERS NONLINEAR OPTICAL PULSES SOLITARY WAVES PERTURBATIONS TRANSMISSION ABSORPTION SYSTEMS 

分 类 号：O43[机械工程—光学工程]