How to get assymetric mode profile in eigenmode solver for ring resonator

as per this article to calculate the coupling length difference in effective index of the symmetric and anti-symmetric coupled modes is required. But I am not able to generate an antisymmetric mode profile using eigen mode solver which is given here:

kindly help me

Hi @rajparrikar,

Welcome to the community!

As instructed in Modeling Instructions, by going through the initial instructions and once Determine Coupling Length section is completed, we will have the results required to determine the coupling length (shown below).

Using the difference between effective index values for first and second modes we can determine the coupling length (Check Discussion and results).

Note that the demonstrated results are obtained for real part and not the amplitude (Mode plot options).

Kind regards,

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thank you for your reply, got my mistake. I was plotting electric field intensity. cheers

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