Four wave mixing nonlinear straight waveguide
I am trying to convert the four wave mixing example https://support.lumerical.com/hc/en-us/articles/360041718794
into a straight waveguide to observe third harmonic generation and four wave mixing effects. However the simulation is not working when I analyze the transmission. The linear analysis seems fine. The nonlinear part of adjusting the source is the problem.
The source is defined as:
The waveguide material is the same as in the example.
Any idea what is wrong here?