{"id":293466,"date":"2023-07-17T18:25:43","date_gmt":"2023-07-17T18:25:43","guid":{"rendered":"\/forum\/forums\/reply\/293466\/"},"modified":"2023-07-17T18:25:43","modified_gmt":"2023-07-17T18:25:43","slug":"293466","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/293466\/","title":{"rendered":"Reply To: Lumerical\u56fe\u4e66\u9986"},"content":{"rendered":"<p>&lt;p&gt;\u770b\u8d77\u6765\u4f60\u53d1\u4e86\u4e09\u4e2a\u5e16\u5b50\uff0c\u4ee5\u540e\u53ea\u53d1\u4e00\u4e2a\u5c31\u53ef\u4ee5\uff0c\u8bf7\u8010\u5fc3\u7b49\u5f85\u6211\u4eec\u7684\u56de\u590d\u3002&lt;\/p&gt;&lt;p&gt;1e-16\u662f\u4e00\u4e2a\u975e\u5e38\u5c0f\u7684\u6570\u503c\uff0c\u4e00\u822c\u662f\u7531\u4e8e\u62df\u5408\u8bef\u5dee\u9020\u6210\u7684\uff0c\u867d\u7136\u5927\u591a\u6570\u60c5\u51b5\u5e76\u4e0d\u4f1a\u5bf9\u4eff\u771f\u9020\u6210\u53d1\u6563\u7684\u95ee\u9898\uff0c\u5982\u679c\u5fc5\u8981\u4f60\u53ef\u4ee5\u4fee\u6539\u62df\u5408\u53c2\u6570\u3002&lt;\/p&gt;&lt;p&gt;\u4f46\u662f\u5c31\u4f60\u73b0\u5728\u7684\u60c5\u51b5\uff0c\u5f88\u53ef\u80fd\u662f\u663e\u793a\u7528\u7684square root\u7b97\u6cd5\u7684\u95ee\u9898\uff0c\u4f7f\u7528\u4e0b\u5217\u811a\u672c&lt;\/p&gt;&lt;p style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;f=c\/1.36e-6;&lt;\/p&gt;&lt;p style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;format long;&lt;\/p&gt;&lt;p style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;?index=getindex(&#8220;Si (Silicon) &#8211; Palik&#8221;,f);&lt;\/p&gt;&lt;p style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;?index=getfdtdindex(&#8220;Si (Silicon) &#8211; Palik&#8221;,f,min(f),max(f));&lt;\/p&gt;&lt;p style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;result:&nbsp;&lt;br&gt;3.501847860489718+0.000000000000000i &nbsp;&lt;br&gt;result:&nbsp;&lt;br&gt;3.501847860489718+0.000000000000000i &nbsp;&lt;\/p&gt;&lt;p style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;\u8f6f\u4ef6\u5b9e\u9645\u4f7f\u7528\u7684\u662fPermittivity\uff0c \u4f7f\u7528\u4e0b\u5217\u811a\u672c\uff1a&lt;\/p&gt;&lt;p style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;&nbsp;dt=getnamed(&#8220;FDTD&#8221;,&#8221;dt&#8221;);&lt;br&gt;?permittivity=getnumericalpermittivity(&#8220;Si (Silicon) &#8211; Palik&#8221;,f,min(f),max(f),dt);&lt;br&gt;?sqrt(permittivity);&lt;br&gt;result:&nbsp;&lt;br&gt;12.26293843801642 &nbsp;&lt;br&gt;result:&nbsp;&lt;br&gt;3.501847860489718 &nbsp;&lt;\/p&gt;&lt;p style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;\u5e76\u6ca1\u6709\u91cd\u73b0\u8fd9\u4e2a\u663e\u793a\u7684\u7ed3\u679c\uff0c\u56e0\u6b64\u53ef\u4ee5\u653e\u5fc3\u4f7f\u7528\uff0c\u4e0d\u7528\u505a\u4ec0\u4e48\u4fee\u6b63\u3002&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-293466","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - 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