The homotopy analysis method is used to solve the electric potential boundary-valued of nonlinear composites,which obey a current-field of J=6E+|E|2E.

Two stress-controlled composite structures with nonlinear dielectrics are introduced to improve the electrical field distribution of power equipments.

Spatiotemporal instability in the planar nonlinear dielectric waveguide is analyzed by nonlinear equation,and the expression of Modulation instability(MI) gain in Raman Scattering is obtained.

Propagation of ultrashort pulse laser in nonlinear medium;

The method was to divide the nonlinear medium into a lot of homogeneous sublayers and to deduce reversedly the input intensity from the output intensity by using transfer matrix of each sublayer.

In this paper,we introduce the present research situation of phase conjugated MOPA systems based on stimulated Brillouin scattering and also introduce several kinds of new nonlinear medium and typical respective MOPA systems and point out it s development prospect.

<Abstrcat>By use of the two kinds of selfconsistency conditions, which are (1)in the longwave limit, the net polarization induced in the inhomogeneous composite is zero,(2)the effective electric field is equal to the average electric field in the composite, the effectivemedium approximation equations of the inhomogeneous composite are derived.