scholarly journals High-efficiency focused optical vortex generation with geometric gap-surface plasmon metalenses

2020 ◽  
Vol 117 (1) ◽  
pp. 011103 ◽  
Author(s):  
Shiwei Tang ◽  
Fei Ding
Keyword(s):  
Surface Plasmon ◽  
High Efficiency ◽  
Optical Vortex ◽  
Vortex Generation

Arbitrary and reconfigurable optical vortex generation: a high-efficiency technique using director-varying liquid crystal fork gratings

2015 ◽  
Vol 3 (4) ◽  
pp. 133 ◽  
Author(s):  
Peng Chen ◽  
Bing-Yan Wei ◽  
Wei Ji ◽  
Shi-Jun Ge ◽  
Wei Hu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
High Efficiency ◽  
Optical Vortex ◽  
Vortex Generation

scholarly journals High-efficiency, broadband all-dielectric transmission metasurface for optical vortex generation

2019 ◽  
Vol 9 (6) ◽  
pp. 2699 ◽  
Author(s):  
Heng Zhou ◽  
Jiaqi Yang ◽  
Chunqing Gao ◽  
Shiyao Fu
Keyword(s):  
High Efficiency ◽  
Optical Vortex ◽  
Vortex Generation

High-efficiency optical vortex generation with hybrid all-dielectric geometric-metasurface in visible frequency

2021 ◽  
Vol 14 (1) ◽  
pp. 012008
Author(s):  
Xiaosai Wang ◽  
Bingyi Liu ◽  
Jiabao Yao ◽  
Jie Song ◽  
Yongyuan Jiang
Keyword(s):  
High Efficiency ◽  
Optical Vortex ◽  
Vortex Generation ◽  
Visible Frequency

scholarly journals High-efficiency, broadband all-dielectric transmission metasurface for optical vortex generation: erratum

2019 ◽  
Vol 9 (7) ◽  
pp. 2806 ◽  
Author(s):  
Heng Zhou ◽  
Jiaqi Yang ◽  
Chunqing Gao ◽  
Shiyao Fu
Keyword(s):  
High Efficiency ◽  
Optical Vortex ◽  
Vortex Generation

Reconstructing a plasmonic metasurface for a broadband high-efficiency optical vortex in the visible frequency

Nanoscale ◽  
2018 ◽  
Vol 10 (26) ◽  
pp. 12378-12385 ◽  
Author(s):  
Bing-Rui Lu ◽  
Jianan Deng ◽  
Qi Li ◽  
Sichao Zhang ◽  
Jing Zhou ◽  
...  
Keyword(s):  
High Efficiency ◽  
Berry Phase ◽  
Optical Vortex ◽  
Vortex Generation ◽  
Efficiency Enhancement ◽  
High Quality ◽  
Visible Frequency

We optimized a Berry-phase-based metasurface for high quality vortex generation in optical frequencies with a >20% efficiency enhancement in a broad waveband.

High-order optical vortex generation in a few-mode fiber via cascaded acoustically driven vector mode conversion

2016 ◽  
Vol 41 (21) ◽  
pp. 5082 ◽  
Author(s):  
Wending Zhang ◽  
Ligang Huang ◽  
Keyan Wei ◽  
Peng Li ◽  
Biqiang Jiang ◽  
...  
Keyword(s):  
Mode Conversion ◽  
Optical Vortex ◽  
High Order ◽  
Vortex Generation ◽  
Vector Mode

scholarly journals External pressure induced liquid crystal defects for optical vortex generation

AIP Advances ◽  
2018 ◽  
Vol 8 (6) ◽  
pp. 065219
Author(s):  
L. K. Migara ◽  
Heesu Lee ◽  
Cheon-Myeong Lee ◽  
Keumcheol Kwak ◽  
Doyeon Lee ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Optical Vortex ◽  
External Pressure ◽  
Crystal Defects ◽  
Vortex Generation

Digitized subwavelength surface structure on silicon platform for wavelength-/polarization-/charge-diverse optical vortex generation

2020 ◽  
Author(s):  
Xiaoping Cao ◽  
Nan Zhou ◽  
Shuang Zheng ◽  
Shengqian Gao ◽  
Yuntao Zhu ◽  
...  
Keyword(s):  
Surface Structure ◽  
Optical Communications ◽  
Vortex Generator ◽  
Optical Vortex ◽  
Vortex Generation ◽  
Worst Case ◽  
Additional Degree ◽  
Direct Binary Search ◽  
Polarization Charge ◽  
Narrow Bandwidth

Abstract Optical vortices carrying orbital angular momentum (OAM) have recently attracted increasing interest for providing an additional degree of freedom for capacity scaling in optical communications. The optical vortex generator is an essential component to facilitate OAM-enabled optical communications. Traditional devices face challenges of limited compactness, narrow bandwidth and first-order OAM modes. Here, using the direct-binary search (DBS) optimization algorithm, we design, fabricate and demonstrate a digitized subwavelength surface structure on silicon platform for wavelength-/polarization-/charge-diverse optical vortex generation. It features an ultra-compact footprint (~3.6×3.6 μm 2 ) and ultra-wide bandwidth (1480-1630 nm), supporting two polarizations and high-order OAM modes (OAM +1 , OAM -1 , OAM +2 , OAM -2 ) with high purity of ~90%. The mode crosstalk matrix is measured in the experiment with favorable performance. When generating x-pol. OAM +1 , x-pol. OAM -1 , y-pol. OAM +1 and y-pol. OAM -1 , the crosstalk of the worst case is less than -14 dB. When generating OAM +1 , OAM -1 , OAM +2 and OAM -2 , the crosstalk between any two OAM modes is less than -10 dB, and the lowest crosstalk is about -17 dB. The wavelength-/polarization-/charge-diverse optical vortex generator enables the full access of multiple physical dimensions (wavelength, polarization, space) of lightwaves. The demonstrations may open up new perspectives for chip-scale solutions to multi-dimensional multiplexing optical communications.

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