High-dimensional Orbital Angular Momentum Communication of Perfect Vortex Beam Based on Demultiplexing of Microlens Array with sector sub-aperture

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-03-27 DOI:10.1016/j.optcom.2025.131762

Fan Wu , Ao Tang , Zhijie Pan, Feng Shen

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引用次数: 0

Abstract

The Perfect Vortex Beam (PVB) exhibits a consistent ring radius across different Orbital Angular Momentum (OAM) modes, this unique characteristic endows the PVB has excellent application prospects in the free-space optical communication field, etc. In this paper, we experimentally demonstrate a high-dimensional OAM communication method using PVB for encoding, and demultiplexing via a microlens array with sector sub-aperture(MLA-S). At the transmitter, multiple PVB with different radii and modes are superimposed to achieve high-dimensional information encoding. At the receiver, an MLA-S is employed for decoding, which the circularly symmetric structure effectively matches the helical phase. This device can simultaneously measure multiple OAM modes at different spatial positions. And compared to using only the OAM modulation, this method can encode more information by utilizing fewer modes. Meanwhile, the OAM decoding device has high measurement accuracy, and a large measurement range without complex image processing. Therefore, this work has promising applications in high-capacity spatial optical communication and mode recognition.

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来源期刊

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.