Achieving Dispersion-Free and Non-Iterative Glare Suppression in Multimode Optical Fibers

Abstract

Suppressing scattering-induced glare is essential for enhancing the detection capabilities of weak objects. While wavefront shaping techniques have shown promise in achieving glare suppression, existing methods often rely on time-consuming iterative feedback processes and struggle to address distortions caused by dispersion. Here, a novel glare-suppressed principal mode capable of simultaneously suppressing both glare and dispersion in dispersive media is presented and experimentally demonstrated. This approach achieves efficient, large-scale glare suppression without iterative adjustments, maintaining exceptional consistency across a wide frequency range. Unlike traditional methods, this technique requires only a single measurement of the multispectral transmission matrix and the computation of the Wigner–Smith operator, making it both straightforward and highly efficient. The non-iterative nature and versatility of this method enable seamless integration into diverse systems, offering a robust framework for advanced imaging and sensing in scattering environments. It is believed that this innovation has the potential to drive significant progress in optical communication, biomedical imaging, and beyond.