摘要
给出了稳态条件下光折变聚合物中的小振幅空间孤子的演化方程，得到了方程的暗、亮孤子解析解，并且给出了小振幅聚合孤子的宽度表达式。结果表明，光折变聚合物中存在着双曲正切形式的小振幅暗空间孤子和双曲正割形式的小振幅亮空间孤子，小振幅聚合孤子的宽度与外加电场成反比关系。
The evolution equation of thelow amplitude spatial solitons in photorefractivepolymer is given under steady state condition,the analytic dark and bright soliton solutions are obtained,and the width expressions for these low amplitu de polymeric solitons are also presented.It is shown that the dark low amplitude spatial solitons with hyperbolic tangent profile and the bright ones with hyperbolic secant profile can exist in biased photorefractive polymer.It is also found that the width of these low amplitude polymeric solitons is inversely proportional to the absolute value of the external applied electric field.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2001年第9期1164-1167,共4页
Acta Photonica Sinica
基金
This work was supported by the Natural Science Foundation of China
the Research Foundatiohinan of Harbin Institute of Techno
