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Beginner's question about the dielectric slab waveguide example
Posted Aug 17, 2014, 8:12 a.m. EDT 0 Replies
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I’m a beginner at COMSOL, and I have few basic questions about it. It will probably be trivial for you. My final goal is to find the solitons transverse profile in a nonlinear waveguide, so I’m currently learning how to use the RF module. I’ve opened the example file of a dielectric slab waveguide which study the linear modes in this kind of a waveguide. In this example there are three steps, namely:
1) Boundary mode analysis on port 1
2) Boundary mode analysis on port 2
3) Frequency domain
I’m just trying to figure out the logic which led to these steps. What exactly steps 1 and 2 are calculating? Is it the mode’s profile at the boundaries? Or maybe it’s the eigenvalues, i.e. the propagation constants at the boundaries? Also, how does step 3 use this information to find the mode’s profile? I’ve tried to use only step 1 and check the results, but I didn’t extract any valuable information from it.
Thanks,
Tal.
Hello Arie Weiss
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