Spin-orbit coupling suppressed high-capacity dual-step-index ring-core OAM fiber

被引：14

作者：

Lu, Quanchao ^{[1
,2
]}

Tu, Jiajing ^{[3
]}

Wang, Zhuo ^{[4
]}

Gao, Shecheng ^{[3
]}

Zhou, Ji ^{[3
]}

Xiao, Qinghua ^{[1
,2
]}

Shen, Lei ^{[5
]}

Lan, Xiaobo ^{[5
]}

Liu, Weiping ^{[3
]}

Li, Zhaohui ^{[1
,2
,6
]}

机构：

[1] Sun Yat Sen Univ, Guangdong Prov Key Lab Optoelect Informat Proc Ch, Guangzhou 510006, Peoples R China

[2] Sun Yat Sen Univ, Sch Elect & Informat Technol, Guangzhou 510006, Peoples R China

[3] Jinan Univ, Coll Informat Sci & Technol, Dept Elect Engn, Guangzhou 510632, Peoples R China

[4] Hong Kong Polytech Univ, Dept Elect & Informat Engn, Hong Kong, Peoples R China

[5] Yangtze Opt Fiber & Cable Joint Stock Ltd Co, State Key Lab Opt Fiber & Cable Manufacture Techn, Wuhan 430073, Peoples R China

[6] Southern Lab Ocean Sci & Engn, Zhuhai 519000, Guangdong, Peoples R China

来源：

OPTICS LETTERS | 2022年 / 47卷 / 05期

基金：

中国国家自然科学基金;

关键词：

DESIGN;

D O I：

10.1364/OL.451683

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We design and fabricate a dual-step-index ring-core fiber (RCF) for orbital angular momentum (OAM) mode transmission. It has been proven that the proposed novel, to the best of our knowledge, dual-step-index ring-core structure can suppress the spin-orbit coupling and cut off the radial higher-order modes when the mode number becomes very large. In experiments, we demonstrate that the fabricated fiber can support OAM(8,1) with the interferometric method, where four higher-order mode groups are weakly-coupled. We also measure the loss of each mode according to the cut-back method and the loss can achieve <03 dB/km for the OAM modes with an order from vertical bar l vertical bar = 1 to vertical bar l vertical bar = 5. The exploration of this novel optical fiber structure may provide ideas and knowledge for the improvement of the optical fiber communication capacity. (C) 2022 Optica Publishing Group

引用

页码：1141 / 1144

页数：4