We are surprised to hear it took only 4-5 min to simulate this! Check it out!
Example: https://www.flexcompute.com/tidy3d/examples/notebooks/ZeroCrossTalkTE/
Blog interview: https://www.flexcompute.com/blog/2023/07/11/exceptional-coupling
Original paper: https://doi.org/10.1364/OPTICA.394987
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