Vignes
I send an email to you or a friend.
Plz send me your email to deliver files to you because it may contain papers has copyrights and i can’t upload it here.
To test it i think the great man Damian send me the method through configuring Spatial CW Laser to produce more than one HG mode in spatial effects tap in its properties then connect it to parabolic index MMF to obtain LP modes.
BR
Abdallah