How to correctly set the wave vector k in the beam envelope physical field

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I want to reproduce the results of a paper. Below is a schematic diagram of its waveguide, which involves the coupling of two layers of waveguides. How can I correctly define the wave vector?



0 Replies Last Post 8 mar 2025, 02:48 GMT-5
COMSOL Moderator

Hello 永森 孙

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