Monitor reflection on the propagation path
I am trying to simulate the coupling between different devices using FDTD. Refer to the official example, I placed a similar monitor in the entire simulation area.
Facet reflection and transmission calculations https://support.lumerical.com/hc/en-us/articles/360042304894
Blue and Purple area: two devices
Gray: Unoptimized AR coating
On the left half, reflection(Monitor 1)+transmission(Monitor 5)+others(4 Monitors similar in examples), the total power of 6 monitors is around 1.
On the right half, received power(Monitor 8)+others(4 Monitors similar in examples), the total power of 5 monitors is around the power of Monitor 5, which is transmission.
At this moment, the gap between devices are quite large, if the distance decreases, and place a monitor at the middle of the gap region, is there anyway to using this new added monitor to get the reflection inside the gap? If I understand correctly, this new added monitor will get the transmission and reflection(if exists ) at same time, if is there any method to get the reflection and transmission separately?
Thanks in advance.