小损耗介质中非相干耦合光束的传输特性  

Propagation characteristics of incoherently coupled beams in low loss media

作　　者：王锦丽 钟春晓[1] 任喜梅 李蓉[1] WANG Jinli;ZHONG Chunxiao;REN Ximei;LI Rong(Institute of Technology,East China Jiaotong University,Nanchang 330031,China)

机构地区：[1]华东交通大学理工学院,江西南昌330031

出　　处：《量子电子学报》2021年第1期10-16,共7页Chinese Journal of Quantum Electronics

基　　金：江西省教育厅科学技术研究项目,GJJ181493。

摘　　要：研究了非相干耦合光束在损耗介质中的传输特性。采用变分法导出了介质损耗条件下非相干耦合光束的振幅、间距、相位、传播速度等参数演化方程组,在此基础上经变换得到了两空间光孤子的相互作用势能和相互作用力表达式,并结合画图分析了介质损耗对孤子的传输及相互作用的影响。研究表明介质损耗减慢了孤子相位的变化速度;介质损耗还使孤子相互作用随传输距离呈现指数型衰减,长距离传输可能会导致孤子对的变形崩溃;孤子间的相互作用存在最大值,当孤子间距大于某一定值时,两孤子会互不干扰地独立传输。The propagation properties of two incoherent coupled beams in lossy media are investigated.The evolution equations of amplitude,distance,phase and propagation velocity of incoherently coupled beams with dielectric loss are derived by variational method,then the interaction potential energy and interaction force of two spatial optical solitons are obtained,and the effect of dielectric loss on soliton transmission and interaction is analyzed.It is shown that the dielectric loss slows down the phase change of the soliton,and the loss also makes the interaction of solitons decay exponentially with the propagation distance,while long-distance transmission may lead to the collapse of soliton pairs.It is also shown that the interaction between solitons has a maximum,and when the distance between solitons is greater than a certain value,the two solitons will transmit independently without interference.

关 键 词：非线性光学 空间光孤子 变分法 非相干耦合 损耗 

分 类 号：O437[机械工程—光学工程]