High-order OAM mode generation in a helical long-period fiber grating inscribed by an oxyhydrogen-flame

被引：20

作者：

Shao, Laipeng ^{[1
]}

Liu, Shen ^{[1
]}

Zhou, Min ^{[1
,2
]}

Huang, Zheng ^{[1
]}

Bao, Weijia ^{[1
]}

Bai, Zhiyong ^{[1
]}

Liu, Zhao ^{[1
]}

Zhu, Guoxuan ^{[1
]}

Sun, Zhongyuan ^{[1
]}

Zhong, Junlan ^{[1
]}

Wang, Yiping ^{[1
]}

机构：

[1] Shenzhen Univ, Coll Phys & Optoelect Engn, Minist Educ Guangdong Prov, Key Lab Optoelect Devices & Syst, Shenzhen 518060, Peoples R China

[2] Chongqing Univ Posts & Telecommun, Sch Commun & Informat Engn, Chongqing 400065, Peoples R China

来源：

OPTICS EXPRESS | 2021年 / 29卷 / 26期

基金：

中国国家自然科学基金;

关键词：

All Open Access; Gold;

D O I：

10.1364/OE.448417

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Y In this study, an all-fiber +/- 3-order orbital angular momentum (OAM) mode generator with similar to 90% conversion efficiency is proposed and experimentally demonstrated. By using a helical long-period fiber grating (HLPFG) inscribed by an oxyhydrogen-flame, the fundamental mode (LP01) of the six-mode fiber (6MF) can be effectively converted into the OAM(+/- 3) mode without the need for polarization control. This is the first demonstration of the all-fiber +/- 3-order OAM mode generator by an oxyhydrogen-flame-induced HLPFG approach as far as we know. In addition, the broadband tunability of the +/- 3-order OAM mode generator within 1520-1630 nm is demonstrated just by changing the pitch of the helical grating. We believe that the proposed tunable +/- 3-order OAM mode generator can offer a new alternative for high-order OAM mode generation. (C) 2021 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：43371 / 43378

页数：8

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