.png){kind=icon}
返回
High-dimensional signal encoding and decoding method based on multi-ring perfect vortex beam
.png){kind=icon}
OA
AI
DOI：10.1364/OE.530961.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
The perfect optical vortex beam (POVB), renowned for its consistent beam radius across various orbital angular momentum (OAM) modes, excels in applications such as optical tweezers and communication. In our study, we achieved a significant milestone by creating a multi-ring perfect optical vortex beam (MR-POVB) through the superposition of multiple POVBs. This beam design maintains the inherent advantages of POVB while enabling multidimensional encoding via adjustable topological charges, radii, and intensities of each ring, thereby augmenting the free-space optical communication's channel capacity. To maximize MR-POVB's encoding potential, we introduced a novel encoding method tailored for vortex beams in optical communication. This method utilizes predefined rules to control beam transmission for efficient encoding. Additionally, we implemented a machine learning-based code group selection approach, combining cosine similarity and spectral clustering algorithms, to optimize encoding and enhance decoding accuracy. During decoding, MR-POVB's coaxial interference with the Gaussian beam reveals petal-like patterns and a deep learning approach is employed to accurately identify these features, facilitating signal decoding. The introduction of the MR-POVB encoding and decoding technique in this paper not only boosts channel capacity but also improves decoding accuracy, driving advancements in the field of free-space optical communication. (c) 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
Keyword:
ORBITAL ANGULAR-MOMENTUM
OPTICAL VORTICES
GENERATION
LIGHT
TRANSFORMATION
期刊
IF:
3.3
论文数:
6.1W
被引数:
14.3W
机构
引用论文
Inorganic−Organic Hybrid Compounds: Synthesis and Structures of New Metal Organic Polymers Synthesized in the Presence of Mixed Dicarboxylates无机-有机杂化化合物: 在混合二羧酸存在下合成的新型金属有机聚合物的合成和结构
PREAI
分享收藏分享收藏Evaluation of channel capacities of OAM-based FSO link with real-time wavefront correction by adaptive optics.png)
OPTICS EXPRESS
OAAI
OPTICS EXPRESSIF3.3
OAAI分享收藏Phase-shift interference-based wavefront characterization for orbital angular momentum modesOPTICS LETTERS
OPTICS LETTERSIF3.3
PREAI
分享收藏
查看更多内容