Does anyone know how much power loss one might expect if they coupled a TEM 00 laser (say 200 mW 532 nM, 1 mm beam) into a multimode fiber ( 1 meter long ) with 100 micron core using the best available technology (grin lenses, Index matching gels, SMA , Biconic , APC or FC connectors) ?

Has anyone tried combining lasers by reversing the inputs on a fiber splitter so 2 or 3 inputs give you a single output using a Star or Tree coupler ?

Does anyone think this is practical for laser show applications ?

In case you want to get a better Idea what at Star or Tree coupler is see this link " "