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

Aberration correction in holographic optical tweezers using a high-order optical vortex: publisher’s note

2018 ◽  
Vol 57 (17) ◽  
pp. 4857
Author(s):  
Yansheng Liang ◽  
Yanan Cai ◽  
Zhaojun Wang ◽  
Ming Lei ◽  
Zhiliang Cao ◽  
...  
Keyword(s):  
Optical Tweezers ◽  
Optical Vortex ◽  
High Order ◽  
Aberration Correction ◽  
Holographic Optical Tweezers

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.

Optical vortex generation from a diode-pumped alexandrite laser

2018 ◽  
Vol 15 (4) ◽  
pp. 045804 ◽  
Author(s):  
G M Thomas ◽  
A Minassian ◽  
M J Damzen
Keyword(s):  
Optical Vortex ◽  
Vortex Generation ◽  
Alexandrite Laser ◽  
Diode Pumped

Dielectric Meta-Reflectarray for Broadband Linear Polarization Conversion and Optical Vortex Generation

Nano Letters ◽  
2014 ◽  
Vol 14 (3) ◽  
pp. 1394-1399 ◽  
Author(s):  
Yuanmu Yang ◽  
Wenyi Wang ◽  
Parikshit Moitra ◽  
Ivan I. Kravchenko ◽  
Dayrl P. Briggs ◽  
...  
Keyword(s):  
Linear Polarization ◽  
Optical Vortex ◽  
Polarization Conversion ◽  
Vortex Generation

High-order mode conversion in a few-mode fiber via laser-inscribed long-period gratings at 155  µm and 2  µm wavebands

2020 ◽  
Vol 59 (34) ◽  
pp. 10688
Author(s):  
Xinyi Zhao ◽  
Yunhe Zhao ◽  
Yunqi Liu ◽  
Zuyao Liu ◽  
Chengbo Mou ◽  
...  
Keyword(s):  
Mode Conversion ◽  
High Order Mode ◽  
High Order ◽  
Order Mode ◽  
Long Period ◽  
Long Period Gratings

Optical vortex generation with a “fork” hologram under conditions of high-angle diffraction

2010 ◽  
Vol 283 (10) ◽  
pp. 2006-2016 ◽  
Author(s):  
A. Bekshaev ◽  
O. Orlinska ◽  
M. Vasnetsov
Keyword(s):  
Optical Vortex ◽  
Vortex Generation ◽  
High Angle

Ultraviolet optical vortex generation using a pair of β-BaB_2O_4 crystals with inverted orientations

2017 ◽  
Vol 56 (29) ◽  
pp. 8075 ◽  
Author(s):  
Yuta Sasaki ◽  
Koki Yamaguchi ◽  
Jun Shibakawa ◽  
Katsuhiko Miyamoto ◽  
Takashige Omatsu
Keyword(s):  
Optical Vortex ◽  
Vortex Generation
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