I have a very simple question. How could I define a source Gaussian out from a single mode fiber, which core size is 4 micro, NA =0.12. I know the beam size (diameter) should be set to be MFD, how to put the parameter for position? should I put the parameter of the position as Rayleigh distance Zr? or should I use MFD/(2*NA)?
Thanks for your answer in advance.
Best answer by BilyboyView original