Speckle-driven single-shot orbital angular momentum recognition with ultra-low sampling density.

ABSTRACT: Orbital angular momentum (OAM) recognition of vortex beams is critical for applications ranging from optical communications to quantum technologies. However, conventional approaches designed for free-space propagation struggle when light passes through scattering media, such as multimode fibers (MMF), and often rely on high-resolution sensors with tens of thousands of pixels to record detailed intensity profiles. Here, by harnessing scattering media as intrinsic encoders rather than detrimental factors, we introduce a speckle-driven OAM recognition technique termed spatially multiplexed points detection (SMPD). This method extracts intensity information from a few spatially distributed points in a speckle plane, where object feature is naturally multiplexed, thereby transforming scattering

SUBMITTER: Wang Z 

PROVIDER: S-EPMC12700884 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature