Hi all,

I am trying to understand the relationship between the NLSE and Intensity.

The NLSE states that

i*del(A)/del(z) = -i*alpha*A+0.5*Beta2*del^2(A)/del(T)^2-Gamma*(|A|^2)*A

- i is the complex number
- A is the wave equation
- z is the direction
- Beta2 is a dispersion parameter
- Gamma is nonlinear parameter
- del is the partial derivative

A simplified solution, if we disregard the attenuation term (-i*alpha*A) and the dispersion term (0.5*Beta2*del^2(A)/del(T)^2) is

A(z,T) = A(0,T)*exp[i*PHI(z,T)]

where the phase shift is given by the rate of change of Intensity. I am not sure what the phase shift is here.

Is anyone familiar with this?

TIA,
Matthew.