InP MMI reflector
I'm trying to replicate the results of a symmetric InP MMI reflector based on ( https://ieeexplore.ieee.org/document/5287354). I've attached my model for this (https://www.dropbox.com/s/uxjk4pfy8ka0yva/InP_reflector_t2.lms?dl=0), based on an EME simulation. I'm getting similar peaks when sweeping the multimode region around the lengths mentioned in the paper (40um), but the efficiency is significantly lower than the one presented (around 15% reflection). I'm not sure how could the simulation been improved or if my setup is not suitable for this type of simulation.