首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Soliton switching study using new normalized nonlinear Schrödinger equations
Authors:Youfa Wang  WenFeng Wang
Institution:1. Liteon Singapore, 22 Sin Ming Lane No. 03-83, Singapore 573969, Singapore;2. Department of Physics and Electronic Technology, Hubei University, 11 xueyuan Road, Wuhan 430062, Hubei, China
Abstract:Soliton switching in a nonlinear directional coupler (NLDC) is studied by using new normalized nonlinear Schrödinger equations (NLSE). The resulted equations have one parameter κLD only, this feature greatly simplifies the numerical study of soliton coupling in a NLDC, and it enables us to derive the soliton switching conditions based on numerical analysis. Numerical results show that most of the input soliton energy remains in the launched waveguide when input soliton normalized peak power is bigger than 2.5. It is contrary to the existing theoretical expectations which were derived using variational approach. The fundamental soliton switching conditions is also expressed in terms of input soliton pulse width. In addition, it is found that frequency chirp degrades soliton switching performance in a NLDC.
Keywords:Soliton switching  Nonlinear directional coupler
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号