Widely Tunable Optical Vortex Array Generator Based on Grid Patterned Liquid Crystal Cell

被引：20

作者：

Lee, Doyeon ^{[1
]}

Lee, Heesu ^{[1
]}

Migara, L. K. ^{[2
]}

Kwak, Keumcheol ^{[1
]}

Panov, Vitaly P. ^{[1
]}

Song, Jang-Kun ^{[1
]}

机构：

[1] Sungkyunkwan Univ, Dept Elect & Comp Engn, Suwon 440746, Gyeonggi Do, South Korea

[2] Sri Lanka Technol Campus, Sch Engn, Padukka 10500, Sri Lanka

来源：

ADVANCED OPTICAL MATERIALS | 2021年 / 9卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

liquid crystals; optical communications; optical vortices; q‐ plates; topological defects; ORBITAL ANGULAR-MOMENTUM; VECTOR BEAMS; Q-PLATE; TRANSMISSION; INFORMATION; TWEEZERS; LIGHT;

D O I：

10.1002/adom.202001604

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Since optical vortex (OV) beams possess an additional degree of freedom, orbital angular momentum, the beams can be utilized to enhance signal modulation in optical communication technologies by mode division multiplexing and information encoding. In particular, tunable OV devices with wavelength adjustment and channel switching generate wide interest among researchers. This paper demonstrates tunable OV generator based on a grid-patterned liquid crystal (GPLC) cell. The device, which is capable of producing an array of OV beams, offers an electrically controllable conversion between scalar vortices and vector vortices and controllable optical vortex density. In addition, the GPLC device is tunable to optimize its performance over a broad range of wavelengths.

引用

页数：10

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