According to the developmental trend of coupling devices in optical communication,a new style optical glass is developed and ball lenses can be fabricated by use of sagging method depending on liquid interfacial force.Diffraction intensity distribution of ball lens which diameter is 0.8mm is researched,results indicate:diffraction intensity distributions of ball lens are 0.2μm,0.4μm and 1.0μm according to 0.2mm,0.4mm and 0.8mm of the beam apertures.Consequently,diffraction intensity distribution of ball len...