Extending the Detection Range of Optical Vortices by Dense Phase Stitching Algorithm

With the development of optical communication technology based on orbital angular momentum (OAM), more and more OAM modes are employed in communication systems, which puts forward higher requirements for the capacity of OAM state detection at the receiving end. In this work, we reported a scheme to measure and demultiplex OAM beams with topological charges from −32 to +32 by using a specially engi...