Theory and Practice of Orbital Angular Momentum and Beyond

Trichili, Abderrahmen; Cox, Mitchell A.; Perez-García, Benjamin; Ooi, Boon S.; Alouini, Mohamed‐Slim

doi:10.1002/3527600434.eap949

Cited by 3 publications

(1 citation statement)

References 134 publications

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“…Orbital angular momentum (OAM) carrying beams have been extensively investigated in recent years due to their promising impact on various applications, particularly in communication and quantum technologies [1], [2]. One specific category of OAM beams, known as Perfect Optical Vortex (POV) beams, has attracted attention for their potential in realizing spatial division multiplexing systems in both freespace and optical fiber channels [3], [4].…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of a Perfect Optical Vortex Sorter Using a Binary Dammann Grating

Al Ibrahim,

Zheng,

et al. 2024

IEEE Photonics J.

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This paper presents the design, simulation, and experimental validation of a Perfect Optical Vortex (POV) sorter using a novel approach based on a binary Dammann Grating. POV beams, crucial for applications in communication and quantum systems, have traditionally posed challenges in sorting due to crosstalk and fabrication limitations. In this study, a hybrid lens system, combining a modified radial lens and a lateral lens, was proposed and optimized using parameters α and β to achieve precise separation between POV modes. The design was simulated, allowing for the customization of the lens based on beam size and system constraints. To further enhance sorting efficiency, a Dammann Grating was employed to encode the phase profile, facilitating easy fabrication and integration into existing optical setups. Simulations and experiments were conducted, demonstrating the system's ability to map each topological charge to a unique radial location with high efficiency. Results indicated minimal crosstalk when the separation between orders exceeded 3, showcasing the potential for this system to be utilized in communication platforms. This research introduces a scalable, efficient, and compact solution for demultiplexing POV beams, paving the way for their seamless integration into optical communication systems.

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