On the design of multi-vortex beam multiplexers using programmable metasurfaces

Behrad Rezaee Rezvan; Mohammad Yazdi; Seyed Ehsan Hosseininejad

doi:10.1364/JOSAB.502102

Journal of the Optical Society of America B
Vol. 40,
Issue 11,
pp. 2979-2989
(2023)
•https://doi.org/10.1364/JOSAB.502102

On the design of multi-vortex beam multiplexers using programmable metasurfaces

Behrad Rezaee Rezvan, Mohammad Yazdi, and Seyed Ehsan Hosseininejad

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Behrad Rezaee Rezvan, Mohammad Yazdi, and Seyed Ehsan Hosseininejad, "On the design of multi-vortex beam multiplexers using programmable metasurfaces," J. Opt. Soc. Am. B 40, 2979-2989 (2023)

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Table of Contents Category
- Metamaterials
Optics & Photonics Topics
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The topics in this list come from the Optics and Photonics Topics applied to this article.

About this Article
History
- Original Manuscript: August 1, 2023
- Revised Manuscript: September 25, 2023
- Manuscript Accepted: October 10, 2023
- Published: October 27, 2023

Abstract

This paper presents an analytical procedure for designing orbital angular momentum (OAM) multiplexers with the capability of generating multiple multiplexed beams with different directions and OAM mode indices. The presented design method provides independent control of the power of each output OAM mode in a multiplexed beam. As a proof of concept, a metasurface with four incident beams and two multiplexed scattered beams with different directions and OAM modes is designed. It is based on a 2/2 bits phase–amplitude programmable metasurface which is numerically simulated, and the results are in good agreement with analytical predictions. The presented approach paves the way for design and implementation of multifunctional devices specially used in OAM communication systems.

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Supplementary Material (1)

Name	Description
Supplement 1	Supplemental document.

Data availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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	Phase States
Amp States	00	01	10	11
00	$P h a s e = 94$	$P h a s e = 190$	$P h a s e = 269$	$P h a s e = 14$
00	$A m p = 0.79$	$A m p = 0.785$	$A m p = 0.78$	$A m p = 0.93$
01	$P h a s e = 90$	$P h a s e = 178$	$P h a s e = 270$	$P h a s e = 356$
01	$A m p = 0.6$	$A m p = 0.57$	$A m p = 0.58$	$A m p = 0.65$
10	$P h a s e = 92$	$P h a s e = 181$	$P h a s e = 267$	$P h a s e = 2$
10	$A m p = 0.4$	$A m p = 0.34$	$A m p = 0.32$	$A m p = 0.35$
11	$P h a s e = 97$	$P h a s e = 174$	$P h a s e = 270$	$P h a s e = 5$
11	$A m p = 0.16$	$A m p = 0.12$	$A m p = 0.2$	$A m p = 0.17$

Ref.	Number of Modes in a Beam	OAM Mode Purity Reached	Maximum of Parasitic OAM Mode	Type of Metasurface	Multi-beam Multi-mode OAM Generation	Multiple Incident Beams
This Work	3	[0.34, 0.34, 0.28]	0.02	Phase–Amplitude	Yes	Yes
[35]	3	[0.36, 0.36, 0.27]	N.A.^a	Phase–Amplitude	Yes	No
[42]	1	0.9	N.A.^a	Phase-only	No	No
[43]	1	0.78	0.18	Phase-only	No	No
[44]	1	0.88	0.03	Phase-only	No	No
[45]	1	0.87	0.06	Phase-only	No	No

	Phase States
Amp States	00	01	10	11
00	$P h a s e = 94$	$P h a s e = 190$	$P h a s e = 269$	$P h a s e = 14$
00	$A m p = 0.79$	$A m p = 0.785$	$A m p = 0.78$	$A m p = 0.93$
01	$P h a s e = 90$	$P h a s e = 178$	$P h a s e = 270$	$P h a s e = 356$
01	$A m p = 0.6$	$A m p = 0.57$	$A m p = 0.58$	$A m p = 0.65$
10	$P h a s e = 92$	$P h a s e = 181$	$P h a s e = 267$	$P h a s e = 2$
10	$A m p = 0.4$	$A m p = 0.34$	$A m p = 0.32$	$A m p = 0.35$
11	$P h a s e = 97$	$P h a s e = 174$	$P h a s e = 270$	$P h a s e = 5$
11	$A m p = 0.16$	$A m p = 0.12$	$A m p = 0.2$	$A m p = 0.17$

Ref.	Number of Modes in a Beam	OAM Mode Purity Reached	Maximum of Parasitic OAM Mode	Type of Metasurface	Multi-beam Multi-mode OAM Generation	Multiple Incident Beams
This Work	3	[0.34, 0.34, 0.28]	0.02	Phase–Amplitude	Yes	Yes
[35]	3	[0.36, 0.36, 0.27]	N.A.^a	Phase–Amplitude	Yes	No
[42]	1	0.9	N.A.^a	Phase-only	No	No
[43]	1	0.78	0.18	Phase-only	No	No
[44]	1	0.88	0.03	Phase-only	No	No
[45]	1	0.87	0.06	Phase-only	No	No

Abstract

Supplementary Material (1)

Data availability

Cited By

Figures (10)

Tables (2)

Equations (6)

Journal of the Optical Society of America B