{"id":392983,"date":"2024-11-06T13:52:31","date_gmt":"2024-11-06T13:52:31","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/3d-charge-simulation-for-variable-width-ring-mrm-in-fdtd\/"},"modified":"2024-11-06T13:52:31","modified_gmt":"2024-11-06T13:52:31","slug":"3d-charge-simulation-for-variable-width-ring-mrm-in-fdtd","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/3d-charge-simulation-for-variable-width-ring-mrm-in-fdtd\/","title":{"rendered":"3D CHARGE Simulation for Variable-Width Ring MRM in FDTD"},"content":{"rendered":"<p>&lt;p&gt;I&#8217;m researching a microring modulator (MRM) with a variable-width ring, unlike the standard example on your website which uses a single 2D cross-section. My structure&rsquo;s non-uniform width requires a 3D CHARGE simulation to capture the spatial carrier distribution as a function of bias voltage.&lt;\/p&gt;&lt;p&gt;Is there a way in Ansys DEVICE to perform a 3D CHARGE simulation and export this distribution (charge.mat) for use in FDTD? Additionally, would it be possible to simulate the transmission spectra in FDTD under different bias voltages?(In lumerical MRM example, MODE is used to simulate the ring&#8217;s cross-section. However, with my ring&rsquo;s varying width and varying neff, a single cross-section simulation is insufficient so I have to simulate the transmission of MRM in FDTD rather than INTERCONNECT or MODE)&lt;\/p&gt;&lt;p&gt;Thank you for your help.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-392983","topic","type-topic","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=\"I&#039;m researching a microring modulator (MRM) with a variable-width ring, unlike the standard example on your website which uses a single 2D cross-section. My structure\u2019s non-uniform width requires a 3D CHARGE simulation to capture the spatial carrier distribution as a function of bias voltage.Is there a way in Ansys DEVICE to perform a 3D CHARGE\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/3d-charge-simulation-for-variable-width-ring-mrm-in-fdtd\/\" \/>\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=\"3D CHARGE Simulation for Variable-Width Ring MRM in FDTD | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"I&#039;m researching a microring modulator (MRM) with a variable-width ring, unlike the standard example on your website which uses a single 2D cross-section. My structure\u2019s non-uniform width requires a 3D CHARGE simulation to capture the spatial carrier distribution as a function of bias voltage.Is there a way in Ansys DEVICE to perform a 3D CHARGE\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/3d-charge-simulation-for-variable-width-ring-mrm-in-fdtd\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-11-06T13:52:31+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-11-06T13:52:31+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"3D CHARGE Simulation for Variable-Width Ring MRM in FDTD | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"I&#039;m researching a microring modulator (MRM) with a variable-width ring, unlike the standard example on your website which uses a single 2D cross-section. My structure\u2019s non-uniform width requires a 3D CHARGE simulation to capture the spatial carrier distribution as a function of bias voltage.Is there a way in Ansys DEVICE to perform a 3D CHARGE\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/3d-charge-simulation-for-variable-width-ring-mrm-in-fdtd\\\/#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\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/3d-charge-simulation-for-variable-width-ring-mrm-in-fdtd\\\/#listItem\",\"name\":\"3D CHARGE Simulation for Variable-Width Ring MRM in FDTD\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/3d-charge-simulation-for-variable-width-ring-mrm-in-fdtd\\\/#listItem\",\"position\":3,\"name\":\"3D CHARGE Simulation for Variable-Width Ring MRM in FDTD\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}}]},{\"@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\\\/topic\\\/3d-charge-simulation-for-variable-width-ring-mrm-in-fdtd\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/3d-charge-simulation-for-variable-width-ring-mrm-in-fdtd\\\/\",\"name\":\"3D CHARGE Simulation for Variable-Width Ring MRM in FDTD | Ansys Learning Forum\",\"description\":\"I'm researching a microring modulator (MRM) with a variable-width ring, unlike the standard example on your website which uses a single 2D cross-section. 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