Excitation of high-quality orbital angular momentum vortex beams in an adiabatically helical-twisted single-mode fiber

被引：18

作者：

Ren, Kaili ^{[1
,2
]}

Ren, Liyong ^{[2
,3
]}

Liang, Jian ^{[2
,3
]}

Yang, Li ^{[4
]}

Xu, Jie ^{[1
]}

Han, Dongdong ^{[1
]}

Wang, Yongkai ^{[1
,3
]}

Liu, Jihong ^{[1
]}

Dong, Jun ^{[1
]}

He, Hanyu ^{[1
]}

Zhang, Wenfei ^{[2
,5
]}

机构：

[1] Xian Univ Posts & Telecommun, Sch Elect Engn, Xian 710121, Peoples R China

[2] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China

[3] Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710119, Peoples R China

[4] Univ Sci & Technol China, Dept Elect Engn & Informat Sci, Hefei 230027, Anhui, Peoples R China

[5] Shandong Normal Univ, Collaborat Innovat Ctr Light Manipulat & Applicat, Jinan 250358, Peoples R China

来源：

OPTICS EXPRESS | 2021年 / 29卷 / 06期

基金：

中国国家自然科学基金;

关键词：

OPTICAL VORTICES; GENERATION; CONVERSION; GRATINGS; LIGHT; LASER;

D O I：

10.1364/OE.419668

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel method to control the parameters of a chiral fiber grating structure is proposed. Mode couplings are controlled in real time during the twisting fabrication process. This chiral grating structure can satisfy the phase-matching condition for generating high-quality orbital angular momentum (OAM) beams, with an order mode of conversion efficiency over 99.9%. Both theoretical analysis and experimental results of this OAM mode conversion have been investigated, with good agreement. The results demonstrate a dual-OAM beam converter with a charge of +/- 1 for the right- and left-handed CLPGs, respectively. The high-quality OAM beam generated in this twisted single-mode fiber process may find excellent applications in optical communications. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：8441 / 8450

页数：10

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