|Feb11-09, 11:01 AM||#1|
Help in Split step fourier method
I have short question at the end , but i wil gve short background.
The subject is regarding the split step fourier method (SSFM) adn i will be gratefull if someone who know the method can help.
i have the set of 2 equations:
where: P, U are the function need to be find P(z,t) U(z,t)
i = sqrt(-1) a=constant
I try to do the split step fourier method (SSFM) on this set, the problem is that the first equation derivative are from order 2, and in all the examples i saw it was from order 1.
I try to seperate to linear part and nonlinear part:
for the first equation:
and for the second equation:
now when i try to do the fourier transform at the linear part, for the U function, it is problem because the derivative is second order.
if it was from first order the fourier transform for the linear part becomes:
how do i modified it on my case when the derivative is second order ?
|May24-09, 06:57 AM||#2|
I try to do the split step fourier method (SSFM)
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