Doubt regarding the working of EO-MZI
I have a doubt regarding the placement of the electrodes, whether it is done in an unsymmetrical way or symmetrical manner (by symmetrical, I mean the placements of the electrodes is equidistant from the arms of the EO-MZI). The MZI which I simulated in the OptiBPM software by following this link: https://optiwave.com/optibpm-manuals/bpm-lesson-14-mach-zehnder-interferometer-switch-2/,the placement of the electrodes is done in an unsymmetrical manner and also in the screenshot enclosed. But, whereas in the research paper that I have enclosed in which in the implementation of NOR gate section, they have placed electrodes in a symmetrical manner. So, now my first question is: How should the electrodes be placed? In a symmetrical or unsymmetrical manner? and my second question is: If these electrodes are placed symmetrically(as they are equidistant from the arms of the MZI) ( as seen in the Research paper enclosed), then how does the phase change between two optical signals occurs to get constructive and destructive interference?
Please let me know about it at the earliest.
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