Sparse intensity sampling for ultrafast full-field reconstruction in low-dimensional photonic systems.

ABSTRACT: Phase-sensitive measurements usually utilize interferometric techniques to retrieve the optical phase. However, when the feature space of an electromagnetic field is inherently low dimensional, most field parameters can be extracted from intensity measurements only. However, even the fastest of the previously published intensity-only methods have too high a computational complexity to be applicable at high data rates and, most importantly, require data from CCD cameras, which are generally slow. This paper shows how a few intensity measurements taken from properly placed photodetectors can be used to reconstruct the complex-valued field fully in systems with low-dimensional feature space. The presented method allows full-field characterization in few-mode fibers and does not employ a refer

SUBMITTER: Manuylovich E 

PROVIDER: S-EPMC11985348 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature