I am wondering if anyone has experience with modeling the output of a large mode area (LMA) fiber? I am trying to model the output of this fiber from nLight specifically: https://static1.squarespace.com/static/628d22a4cced8544470496fe/t/63ec8e6a0f546b2f84a29cc8/1676447339350/nLIGHT+LIEKKI+Yb1200-25_250_2022.pdf

Could it be modeled as just a single mode source if I know the mode field diameter? Or should I try to make something more like a light pipe in non-sequential? Any suggestions are greatly appreciated!