Numerical investigation of slow solitons in Bragg gratings with a hyperbolic tangent apodization  

作　　者：王葵如 程洁琳 桑新柱 陈功 

机构地区：[1]Key Laboratory of Information Photonics and Optical Communications of Ministry of Education,Beijing University of Posts and Telecommunications

出　　处：《Chinese Physics B》2011年第3期268-273,共6页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 60677003)

摘　　要：This paper numerically and analytically investigates the formation and propagation motion of optical soliton in the Bragg grating. We choose the fibre Bragg grating with hyperbolic tangent apodization in the middle section in order to obtain slower solitons. Optical fibre soliton but not Bragg grating soliton is used as input pulse in the discussion, which is much more approximate to the light source for the practical purpose. We discuss in detail the effects of the soliton＇s velocity with some parameters in the process of transmission. The results show that by choosing special parameters, one can make the soliton slow-down with a little distortion and energy decay and obtain tunable time-delay on a small scale.This paper numerically and analytically investigates the formation and propagation motion of optical soliton in the Bragg grating. We choose the fibre Bragg grating with hyperbolic tangent apodization in the middle section in order to obtain slower solitons. Optical fibre soliton but not Bragg grating soliton is used as input pulse in the discussion, which is much more approximate to the light source for the practical purpose. We discuss in detail the effects of the soliton＇s velocity with some parameters in the process of transmission. The results show that by choosing special parameters, one can make the soliton slow-down with a little distortion and energy decay and obtain tunable time-delay on a small scale.

关 键 词：fibre grating slow light SOLITON hyperbolic tangent apodization 

分 类 号：O437[机械工程—光学工程]