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2D simulator application stops working

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(joined December 2015)
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I’m trying to simulate a directional coupler example or MMI model (as indicated in OptiBPM Tech Background and tutorials file) it works properly, but when I change the refractive index of the wave guide to be less than that of the surrounding (cladding) it doesn’t work and I get error “2D simulator application stops working”
who can I use a refractive index for the guide less than that of the surrounding?

the file is attached, thanks in advance

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    • #28721
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      Ahmed Salah
      Participant

      I’m trying to simulate a directional coupler example or MMI model (as indicated in OptiBPM Tech Background and tutorials file) it works properly, but when I change the refractive index of the wave guide to be less than that of the surrounding (cladding) it doesn’t work and I get error “2D simulator application stops working”
      who can I use a refractive index for the guide less than that of the surrounding?

      the file is attached, thanks in advance

      Attachments:

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