{"id":381458,"date":"2024-09-03T14:58:56","date_gmt":"2024-09-03T14:58:56","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fdtd-vs-varfdtd\/"},"modified":"2024-09-03T14:58:56","modified_gmt":"2024-09-03T14:58:56","slug":"fdtd-vs-varfdtd","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fdtd-vs-varfdtd\/","title":{"rendered":"FDTD vs varFDTD"},"content":{"rendered":"<p>&lt;p&gt;Hi,&lt;br&gt;I am trying to understand scattering loss in bend when transitioning from a straight waveguide mode to a bent one with specific waveguide dimensions, 2.4um in width and 80nm in depth and bend radius of 50um. I did the simulations in both FDFD and varFDTD but I am getting different transmission even though I think both are identical otherwise. I expected both the results to be different but the difference in T is too big. Could you please help me with this?&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-381458","topic","type-topic","status-publish","hentry","topic-tag-waveguide-2"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi,I am trying to understand scattering loss in bend when transitioning from a straight waveguide mode to a bent one with specific waveguide dimensions, 2.4um in width and 80nm in depth and bend radius of 50um. I did the simulations in both FDFD and varFDTD but I am getting different transmission even though I think\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fdtd-vs-varfdtd\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"FDTD vs varFDTD | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi,I am trying to understand scattering loss in bend when transitioning from a straight waveguide mode to a bent one with specific waveguide dimensions, 2.4um in width and 80nm in depth and bend radius of 50um. 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