2026-10-14T11:01:31Z https://www.scidb.cn/oai

10.57760/sciencedb.42738 2026-07-20T17:59:15Z

2026-07-20 Multi-Factor Degraded Orbital Angular Momentum Optical Field Dataset doi:10.57760/sciencedb.42738 en This dataset is designed for free-space optical communication research and contains degraded orbital angular momentum (OAM) optical field images generated under different topological charges, atmospheric turbulence strengths, propagation distances, and signal-to-noise ratio conditions.Ideal OAM optical fields were generated using the Laguerre–Gaussian beam model. The degradation process was simulated using the angular spectrum propagation method, a multi-phase-screen atmospheric turbulence model, and additive noise at the receiver.The dataset contains 11 topological charge classes, l = 0, 1, 2, ..., 10; seven atmospheric refractive-index structure constant levels; four propagation distances; and five signal-to-noise ratio levels. Thirty independently disturbed samples were generated for each parameter combination, resulting in 46,200 grayscale intensity images with a resolution of 224 × 224 pixels.Class labels, training/validation/test manifests, statistical summaries, and simulation configuration files are also provided. The dataset can be used for OAM mode recognition, optical-field degradation analysis, model robustness evaluation, and intelligent reception in free-space optical communication systems. The current version is based on numerical simulation and does not contain measurements from real atmospheric channels. free-space optical communication; orbital angular momentum; Laguerre–Gaussian beam Zeng Wei PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank