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How to simulate optical pulse induced heating in optical waveguide.

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Hi,friend. I want to simulate the heat distribution when an optical pulse is sent to a waveguide. If the heat transfer solid with Electromagnetic Waves, Time Explicit(teew) or Electromagnetic Waves, Transient(ewt) can do it? I tried to use Electromagnetic Heating, but it failed, because I can't define the input power as a function of time in the frequency domain. I extremely eager to solve this problem.Can anyone help me? Thank you very much.


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