I am designing a 2x2 MMI splitter and I am using the scripts to define the whole device structure, FDTD region and to obtain the transmission “T”. The whole device structure consists of a MMI core, with tapers on both sides followed by the waveguides.
Within the script, when I change the length of the MMI core, the whole device structure along with the defined FDTD region extends or reduces (based on increasing or decreasing the MMI core length) and thus the the out put transmission “T” values also changes. This verifies that the scripts are working fine.
But when I run the sweep script, and in that script when I sweep the parameter (length of MMI), then only the MMI core changes and NOT the whole device structure. This should NOT be the case.
Can you please help me with this ? I can also share my scripts if you want ?
Thanks a lot.