{"id":307450,"date":"2023-09-19T13:42:15","date_gmt":"2023-09-19T13:42:15","guid":{"rendered":"\/forum\/forums\/topic\/mode-eme-taper-simulation-question\/"},"modified":"2023-09-19T13:42:15","modified_gmt":"2023-09-19T13:42:15","slug":"mode-eme-taper-simulation-question","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mode-eme-taper-simulation-question\/","title":{"rendered":"MODE EME Taper Simulation Question"},"content":{"rendered":"

Hi there,<\/p>\n

I am simulating a tapered SiN ridge waveguide structure. The core SiN has a height of 400 nm and slab SiN has a height of 270 nm. At the input side, the core and slab waveguide widths are both 1.15 um. At the output side, the core and slab widths are both linerly tapered to 1.4 and 2.8 um. The input side I am selecting the fundamental TE and TM modes. The output side I am selecting the 1-5 th order mode. When injecting the fundamental TE mode, the major crosstalks comes from the 4th and 5th order modes at the output ports. The results does not make sense to me. May I ask if there is anything in the setup I should modify?<\/p>\n

Here is the IL results: (1,2 th mode is the input side, 3-7 are the output side modes)<\/p>\n

<\/p>\n

Thank you,<\/p>\n

Deng<\/p>\n","protected":false},"template":"","class_list":["post-307450","topic","type-topic","status-closed","hentry","topic-tag-LumericalEME-1","topic-tag-LumericalMode-1"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t