{"id":292859,"date":"2023-07-13T00:20:17","date_gmt":"2023-07-13T00:20:17","guid":{"rendered":"\/forum\/forums\/reply\/292859\/"},"modified":"2023-07-13T00:20:17","modified_gmt":"2023-07-13T00:20:17","slug":"292859","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/292859\/","title":{"rendered":"Reply To: Check list of revising the transmission data in Bragg Grating Waveguide"},"content":{"rendered":"<p>&lt;p&gt;This will need long simulation time, smaller autshotoff min, and proper PML settings, such as number of PML layers (in total about half wavelength thick). As you can see from your result, it has ripples, which indicates the actual simulation time is not long enough.&lt;\/p&gt;&lt;p&gt;Oce the curve is smooth, then you will need to use finer mesh, and keep PML away (half wavelength) from grating teeth.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;There are some fine-tuning works to be done.&lt;\/p&gt;&lt;p&gt;Please check this post for comparison:&nbsp;&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;<a href=\"\/forum\/forums\/topic\/ansys-insight-why-my-simulation-result-is-different-from-published-paper-or-experiment\/\">Ansys Insight: Why my simulation result is different from published paper or experiment?<\/a>&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;Accurate frequency-domain result will need sufficient time and smaller autoshutoff min , as well as higher mesh accuracy, low PML reflection etc.&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-292859","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=\"This will need long simulation time, smaller autshotoff min, and proper PML settings, such as number of PML layers (in total about half wavelength thick). As you can see from your result, it has ripples, which indicates the actual simulation time is not long enough.Oce the curve is smooth, then you will need to use\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/292859\/\" \/>\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: Check list of revising the transmission data in Bragg Grating Waveguide | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"This will need long simulation time, smaller autshotoff min, and proper PML settings, such as number of PML layers (in total about half wavelength thick). As you can see from your result, it has ripples, which indicates the actual simulation time is not long enough.Oce the curve is smooth, then you will need to use\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/292859\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2023-07-13T00:20:17+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2023-07-13T00:20:17+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: Check list of revising the transmission data in Bragg Grating Waveguide | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"This will need long simulation time, smaller autshotoff min, and proper PML settings, such as number of PML layers (in total about half wavelength thick). 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As you can see from your result, it has ripples, which indicates the actual simulation time is not long enough.Oce the curve is smooth, then you will need to use","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/292859\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/292859\/#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\/292859\/#listItem","name":"Reply To: Check list of revising the transmission data in Bragg Grating Waveguide"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/292859\/#listItem","position":2,"name":"Reply To: Check list of revising the transmission data in Bragg Grating Waveguide","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\/292859\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/292859\/","name":"Reply To: Check list of revising the transmission data in Bragg Grating Waveguide | Ansys Learning Forum","description":"This will need long simulation time, smaller autshotoff min, and proper PML settings, such as number of PML layers (in total about half wavelength thick). 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