2021
DOI: 10.1088/1361-6463/ac3303
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On-chip orbital angular momentum detection using a catenary grating metasurface

Abstract: Vortex lights with optical orbital angular momentum (OAM) have shown great promise in the areas of optical communication, optical manipulation and quantum optics. However, traditional methods for detecting the topological charge of vortex beams, such as interference and diffraction, are still challenging in miniaturization of the detection system and perfect matching of wave vectors. Here, a detection approach is proposed for measuring the topological charge of Laguerre-Gaussian (LG) vortex beam based on a ca… Show more

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Cited by 4 publications
(5 citation statements)
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“…Notably, our SML has the widest mode detection range with the largest SMION, both far outperforming all the previous works. [50][51][52][53][54][55][56][57][58][59][60][61][62] To provide a proof-of-concept demonstration, we design and fabricate an SML based on the geometric phase principle. Initially, we employ a hexagonal periodic unit cell in the configuration of the SML.…”
Section: Results Of Sml For Ultrahigh Capacity Sorting Oamsmentioning
confidence: 99%
See 2 more Smart Citations
“…Notably, our SML has the widest mode detection range with the largest SMION, both far outperforming all the previous works. [50][51][52][53][54][55][56][57][58][59][60][61][62] To provide a proof-of-concept demonstration, we design and fabricate an SML based on the geometric phase principle. Initially, we employ a hexagonal periodic unit cell in the configuration of the SML.…”
Section: Results Of Sml For Ultrahigh Capacity Sorting Oamsmentioning
confidence: 99%
“…Notably, our SML has the widest mode detection range with the largest SMION, both far outperforming all the previous works. [ 50–62 ]…”
Section: Results Of Sml For Ultrahigh Capacity Sorting Oamsmentioning
confidence: 99%
See 1 more Smart Citation
“…[16][17][18][19] They have been applied in the fields of lithography, [20][21][22] achromatic metalens, [23][24][25][26] optical waveguides, 27,28 extraordinary Young's interference, 29,30 and vector light field. [31][32][33] Researchers have been exploring the use of lightweight spectral devices based on metasurfaces as a replacement for bulky traditional spectrometers. [34][35][36] Fast spectrometers can be realized with broadband metasurface filters and a spectral reconstruction algorithm based on compressed sensing, with the principle as shown in Fig.…”
Section: Introductionmentioning
confidence: 99%
“…To meet the above needs, electromagnetic modulation technology based on subwavelength optical structure [3][4][5][6][7][8] came into being. The technology with the characteristics of flexible design and precise control of multiple parameters [6,7] not only greatly diminishes the size and weight of the optical devices, but also derives many emerging fields such as sub-wavelength electromagnetics [7], surface plasmon optics [9][10][11][12], and metamaterials [5][6][7][13][14][15], etc. Accordingly, the devices based on sub-wavelength structures have been designed to exhibit novel optical phenomena, holding applications in fields such as chromatic aberration control [16,17], detection of spin, and orbital angular momenta [18,19], extraordinary Young's interference phenomenon [20,21], wide-angle metalens [22][23][24], and onchip lens [24][25][26].…”
Section: Introductionmentioning
confidence: 99%