MMF can stand for lots of things. What is MMF?

The phase diference is proportional to the load

emf is electromotive force

mmf is magnetic motive force

emf drives electon where as mmf drives magnetic field

MMF mean Man Man Female and MFF mean Man Female Female. its basically the 2 ways to have a 3 sum.

There should always be some type of bending loss in a fiber optic cable, whether it's a SMF or MMF cable. The reason for a bend loss being higher in SMF than MMF is that the core diameter of a SMF fiber can be significantly smaller than the core diameter of a MMF fiber, thus more of the light traveling down the SMF cable will hit the cladding at angles above the TIR angle, and more power will be lost.