Modal reflection from mode expansion monitor

[nouman.zia]

Hello,

I am using mode expansion monitor to calculate the modal reflection of tilt facets in ridge waveguide structure. I would like to know that what are the 5 different values in each output parameter (e.g T-backward) of mode expansion monitor?

My other question is that I would like to measure the modal reflection of only fundamental TE mode. So I selected the fundamental TE in both the mode source and mode expansion monitor. Now how can I find that the one out of five modal reflection ( that is T_backward…? ) values is for only fundamental TE mode?

I have attached my script file and a snap shot for further explanation.

tilt_facet_BD_script.lsf (6.8 KB)

[msaygin]

Hi, @nouman.zia !

I am using mode expansion monitor to calculate the modal reflection of tilt facets in ridge waveguide structure. I would like to know that what are the 5 different values in each output parameter (e.g T-backward) of mode expansion monitor?

My other question is that I would like to measure the modal reflection of only fundamental TE mode. So I selected the fundamental TE in both the mode source and mode expansion monitor. Now how can I find that the one out of five modal reflection ( that is T_backward…? ) values is for only fundamental TE mode?

You can find detailed information of the meanings of the characteristics here:
https://kb.lumerical.com/en/ref_sim_obj_using_mode_expansion_monitors.html

I also recommend using ports, since it can be more convenient for your task:
https://kb.lumerical.com/en/ref_sim_obj_fdtd_ports.html

[bkhanaliloo]

It looks like @nouman.zia posted the same question in the link below. I am closing this topic and user can continue his discussion in the other post:

Tilt RWG reflection

Hi, I am interested to study the reflection of tilt RWG laser diode. Which lumerical module could help me in this. At the moment, i am trying FDTD. I am on a beginner level and any suggestion will be highly appreciated. Thanks in advance.

[bkhanaliloo]