Matlab Co-Simulation

[Abdallah Ismail]

When I used Matlab Component to get spatial mode to matlab workspace.
I found in “Inputport1.Sampled(1,1).Spatial.ModeX.Amplitude” a matrix 100X100 that represent the mode profile function.
I plotted this matrix in Matlab and found it meets the designated mode.
I need to Know how this matrix constructed? i.e F(x,y) is the matrix values ,what is the value of x and y for each element in the matrix.
Regards,

[Damian Marek]

Hi Abdallah,

To save memory only the number of x and y points are saved (size of field array) and the delta x and delta y are saved. From these values you can calculate the vectors x and y.

In the attached Matlab code I perform this operation and below is an excerpt of how you could program it.

xvector = linspace(-dx*0.5*size(Ef,2),dx*0.5*size(Ef,2), size(Ef,2));
yvector = linspace(-dy*0.5*size(Ef,1),dy*0.5*size(Ef,1), size(Ef,1));

[Abdallah Ismail]

Thanks Damian,
I get it but i think your method to calculate Aeff for the fundamental mode will not work for the other modes because they are complex number values.I’ll need to take the absolute of the mode profile matrix.
Regards,
Abdallah

[Damian Marek]

You are absolutely correct! You will need to include a conjugate term in the integrals for a complex field.

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