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    • #44628
      Dong Hun Park
      Participant

      Hello,
      I have a technical question about optiFDTD.
      Based on the existing example, I modified it to minimize zeroth order transmission.
      However, it doesn’t work at all.

      Thickness of the grating is designed by
      lambda/(2*(n2-n1)),
      where lambda=optical wavelength, n1=air, and n2=2.3(lithium niobate).

      It would be much appreciated if you could make any suggestion.

      Thanks,

      -Donghun Park

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    • #44653
      Damian Marek
      Participant

      I checked your design file, the thickness did not correspond to the equation you posted above. From the equation the profile should start at 0.7923 and end at 1.1 microns. Right?

      What is the periodicity of the grating, that will determine the width of the substrate?

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