Thanks Alistu,from the forum statement what adill stated in topic,is the use of spatial laser not cw laser with MZM in order to transmitt multi modes.Use of WDM along with SDM is new and very interesting concept.So would suggest addil replace the CW laser in above screen shot and set the values in array in order to generate different modes.Moreover you can use mode generater after MZM in case CW spatial laser you dont want to use.At receiver side use mode selector for selecting various lp lodes.But you cannot use SMF by doing this,you need to insert here GI-MMF Spatial .SMF do not support these modes.Thank you