Recent content by mark gazi

Hello, my friend: Recently, I encounter a MATLAB program problem on the propagation of the soliton in dielectric . I find that many people use a beam propagation method ( split-step fft ) in order to simulate this procedure. But I cann't get incorrect result. I am eager to...

My question First, thank you .but if the solution of the equation (U) is a complex number, how to separate the "u" into the two condition:(1) U>0; (2) U<0.

It is a nonliear Partial differential equation . you can find it in the appendix. If you have some good idea about this equation ,ok ,please reply to me .thanks!