Home Forums FDTD Photonic Band Gap

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    • #41396
      Tamer Saleh
      Participant

      Can any one help me
      I want to draw the PBG for the structure shown. I do all my best to reach to the same result and I am taken in my consideration the scaling factor (a) but the results not confirmed.

      plz help me quickly.

      Attachments:
    • #41398
      Tamer Saleh
      Participant

      I attached the paper to check if there any missing to help

    • #41400
      Tamer Saleh
      Participant

      My design attached

      Attachments:
    • #41402
      Tamer Saleh
      Participant

      Paper for the design considered

      Attachments:
    • #41419
      Damian Marek
      Participant

      Tamer,

      Here are two ways to do this.

      1) You can turn off individual cells by accessing them from the Crystal Properties box, right click the PBG and edit it.

      2) You can draw waveguides that have the same refractive index as the background material to override the crystal, very easy to do.

      Attached are some pictures of how I did it with the attached project file.

      • #41469
        Tamer Saleh
        Participant

        Hi Damian,

        Till now i wait for your help if you can because all my application I want to do not confirmed with the published papers. I tried all my effort to change any thing related to the structure. I think there is a mystery to adjust the source setting. Can you check my design again.

        Thanks

        Attachments:
    • #41433
      Tamer Saleh
      Participant

      Thank you Damian,

      I made what you told for the structure, but from my knowledge that the PBG was drawn before building the structure to discriminate the gap and pass windows.

      Another thing when i build the structure as shown in the attached paper one figure confirmed and the other not. I am attached the structure after build it. For my application I want to let one input exist (high) and the other (low)!!!!!
      please help me to do this.

      Thanks again for your reply,
      Tamer

      Attachments:
    • #41436
      Damian Marek
      Participant

      I am not sure I understand what your question is. You can enable one Input plane and disable the other one from it’s properties box to get a “low” input.

    • #41439
      Tamer Saleh
      Participant

      Hi Damian,
      I made your steps but till now the results not confirmed with that in the attached paper.

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