{"id":381686,"date":"2024-09-06T01:23:06","date_gmt":"2024-09-06T01:23:06","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/spot-size-converter-example\/"},"modified":"2024-09-11T14:01:36","modified_gmt":"2024-09-11T14:01:36","slug":"spot-size-converter-example","status":"answered","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/spot-size-converter-example\/","title":{"rendered":"Spot Size Converter Example"},"content":{"rendered":"<p>&lt;p&gt;Hello,&lt;\/p&gt;&lt;p&gt;I had a couple questions regarding the SSC simulation provided by lumerical.&lt;\/p&gt;&lt;p&gt;The first question would be regarding the size of the port at the tapered end. I remember going through some instructional vidoes that reccomended the port sizing to be big enough where the E field intensity should not be below around -10 on the log scale (pictures attached).&lt;\/p&gt;&lt;p&gt;With that said, it leads into my second question. Given that the mode at the tapered end is large at the boundaries, would PML boundaries given an advantage over metal boundaries for this type of simulation?&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Any advice would be helpful.&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/06-09-2024-1725585518-SSC2.png\" alt=\"\" width=\"494\" height=\"263\" \/>&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/06-09-2024-1725584843-SSC1.png\" alt=\"\" width=\"500\" height=\"268\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-381686","topic","type-topic","status-answered","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello,I had a couple questions regarding the SSC simulation provided by lumerical.The first question would be regarding the size of the port at the tapered end. 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