摘要
By applying the variational approach,the analytical expression of dipole solitons is obtained in nonlinear media with an exponential-decay nonlocal response.The relations of the soliton power versus the propagation constant and the soliton width are given.Some numerical simulations are carried out.The results show that the analytical expression is in excellent agreement with the numerical results for the strongly nonlocal case.
基金
by the National Natural Science Foundation of China under Grant Nos 10804033 and 11074065
the Program for Innovative Research Team of Higher Education in Guangdong under Grant No 06CXTD005
the Specialized Research Fund for the Doctoral Program of Higher Education under Grant No 200805740002
the Natural Science Foundation of Hebei Province under Grant No F2009000321.
