Learning Forum

[SCL]

While calculating waveguide modes, you can set up an input beam (diameter, lens NA, distance from focus) and calculate the overlap & power coupling.

Does the power coupling result incorporate reflection due to index difference, if I set the refractive index of the input beam to 1?

[Guilin Sun]

Yes, it does consider the index difference from the mode. However, it might be not exactly the same as you do the simulation to extract the power coupling .