{"id":345124,"date":"2024-01-17T13:07:00","date_gmt":"2024-01-17T13:07:00","guid":{"rendered":"\/forum\/forums\/topic\/how-to-simulate-the-phase-shifted-bragg-grating-in-3d-fdtd\/"},"modified":"2024-01-17T13:07:00","modified_gmt":"2024-01-17T13:07:00","slug":"how-to-simulate-the-phase-shifted-bragg-grating-in-3d-fdtd","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-simulate-the-phase-shifted-bragg-grating-in-3d-fdtd\/","title":{"rendered":"How to simulate the phase-shifted bragg grating in 3D FDTD?"},"content":{"rendered":"

Hello, everyone.<\/p>\n

I have constructed the phase-shifted bragg grating following the paper and compared two transmissions between my 3D FDTD result and the paper’s result.<\/p>\n

However, there are some differences between the two data, which show no peak and weak reflection intensity. <\/p>\n

<\/p>\n

Although I match the object parameters with the paper’s parameters, I think that the FDTD region and monitor\/source location are the matter. But, when I reduced the number of periods to 50 and 100, it was weird to show a peak, unlike the conventional one which is 250.<\/p>\n

So, let’s look at my simulation setting.<\/p>\n

  <\/p>\n

The first image is the input region and the other is the output region. I rerun the simulation by increasing the simulation time and mesh accuracy due to the simulation status 1.<\/p>\n

Is there any check point in my simulation setting?<\/p>\n

I would be grateful if anyone could advise me on some solutions.
Thank you<\/p>\n","protected":false},"template":"","class_list":["post-345124","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t