{"id":362348,"date":"2024-04-15T23:52:42","date_gmt":"2024-04-15T23:52:42","guid":{"rendered":"\/forum\/forums\/reply\/362348\/"},"modified":"2024-04-17T16:20:06","modified_gmt":"2024-04-17T16:20:06","slug":"362348","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/362348\/","title":{"rendered":"Reply To: Effective indices of first two modes in SWG"},"content":{"rendered":"<p>&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;It seems something is wrong in the settings, as you can see, the FDE result shows that neff is about 2.81 for the fundamental mode at 1.55um. However in the bandstructure result, there is no data at 1.55um. Before it reaches 1.5um it curves.&lt;\/p&gt;&lt;p&gt;It might mix the modes as it has two bands.I checked the sweep. You set the relative kx from 0.25 to 0.7, which is too large. The kx in the sweep (and the group) is the relative one. Please check the First Brillouin zone, and refer to the example.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-362348","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"It seems something is wrong in the settings, as you can see, the FDE result shows that neff is about 2.81 for the fundamental mode at 1.55um. However in the bandstructure result, there is no data at 1.55um. Before it reaches 1.5um it curves.It might mix the modes as it has two bands.I checked the\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/362348\/\" \/>\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=\"Reply To: Effective indices of first two modes in SWG | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"It seems something is wrong in the settings, as you can see, the FDE result shows that neff is about 2.81 for the fundamental mode at 1.55um. However in the bandstructure result, there is no data at 1.55um. Before it reaches 1.5um it curves.It might mix the modes as it has two bands.I checked the\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/362348\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-04-15T23:52:42+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-04-17T16:20:06+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: Effective indices of first two modes in SWG | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"It seems something is wrong in the settings, as you can see, the FDE result shows that neff is about 2.81 for the fundamental mode at 1.55um. However in the bandstructure result, there is no data at 1.55um. 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However in the bandstructure result, there is no data at 1.55um. Before it reaches 1.5um it curves.It might mix the modes as it has two bands.I checked the","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/362348\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/362348\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","position":1,"name":"Home","item":"https:\/\/innovationspace.ansys.com\/forum","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/362348\/#listItem","name":"Reply To: Effective indices of first two modes in SWG"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/362348\/#listItem","position":2,"name":"Reply To: Effective indices of first two modes in SWG","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}}]},{"@type":"Organization","@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization","name":"Ansys Learning Forum","description":"Ansys Innovation Space","url":"https:\/\/innovationspace.ansys.com\/forum\/"},{"@type":"WebPage","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/362348\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/362348\/","name":"Reply To: Effective indices of first two modes in SWG | Ansys Learning Forum","description":"It seems something is wrong in the settings, as you can see, the FDE result shows that neff is about 2.81 for the fundamental mode at 1.55um. 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However in the bandstructure result, there is no data at 1.55um. Before it reaches 1.5um it curves.It might mix the modes as it has two bands.I checked the","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/362348\/","article:published_time":"2024-04-15T23:52:42+00:00","article:modified_time":"2024-04-17T16:20:06+00:00","twitter:card":"summary_large_image","twitter:title":"Reply To: Effective indices of first two modes in SWG | Ansys Learning Forum","twitter:description":"It seems something is wrong in the settings, as you can see, the FDE result shows that neff is about 2.81 for the fundamental mode at 1.55um. However in the bandstructure result, there is no data at 1.55um. 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