Photonics

Photonics

mode expansion monitor for a gaussian beam in air

    • Chris Chase
      Subscriber

      I want to launch a gaussian source from air to be incident on a freely suspended grating, and calculate overlap between reflection and launched gaussian source. I guess I need to use mode expansion monitor. How should I pick mode selection?

    • Guilin Sun
      Ansys Employee

      Unfortunately, mode expansion monitor only works for waveguides. In your case, you will need to calculate the overlap with a monitor to get the reflection profile and the source fields after simulation. Please refer

      https://optics.ansys.com/hc/en-us/articles/360034396834-Understanding-the-mode-overlap-calculation

      https://courses.ansys.com/index.php/courses/lumerical-fde-solver-physics/lessons/overlap-and-frequency-sweep-lesson-2/

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