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Port in wave optics module
Posted Nov 3, 2020, 5:28 p.m. EST Wave Optics Version 5.4 0 Replies
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Hello,
I'm interested in studying light passing through rings on a metal plate, but I'm having trouble in expressing the incident E-field. When I defined the background E field in Electromagnetic wave, frequency domain, it seems that a wavy pattern appears at the outer boundary of the system.. I think there should be no E-fields if there's no rings on the metal plate, but there is.
What I have found studied is that I can use "port" boundary condition to express the incident light. I designated the bottom boundary as the port (on) and was able to E-field going through the ring. However, it this case, I don't know how to make linearly polarized plane wave. I used user-defined E (exp(-jewfd.k0z, 0, 0) for (x, y, z) of the electric mode field, but it seems that it has higher intensity at the center. Also, when I plotted Ex, the map of Ex looks not uniform when there's no object.
Can anyone please give me a hint about it?
Thank you in advance!! Best, Suhun
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Hello Suhun Jo
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