  We investigate the interference of high-order perfect optical vortex (POV)
beams with different topological charges. Through numerical simulations, we
reveal a remarkable phenomenon: keeping the beam width, and beam radius fixed
while changing the topological charge, the splitting of the composite POV beam
into two distinct individual perfect vortices occurs exactly at the same
inter-axial separation. The observed interference pattern exhibits pronounced
sensitivity to factors such as axial separation, phase shift, beam radius, and
topological charges of the constituent beams. Notably, our findings are
contrasted with the interference of high-order Laguerre-Gauss (LG) beams,
highlighting that the splitting of composite vortices into their individual
components is more rapid in the case of LG beams. Our research provides
significant insights into the distinct interference properties of high-order
POV beams, presenting potential applications in the fields of optical
manipulation and communication systems.
