Design of a circular photonic crystal fiber with square air-holes for orbital angular momentum modes transmission

被引：47
作者：
Bai, Xiuli [1 ,2 ]
Chen, Heming [1 ]
Yang, Honghong [1 ]
机构：
[1] Nanjing Univ Posts & Telecommun, Sch Elect & Opt Engn, Nanjing 210023, Jiangsu, Peoples R China
[2] Nanjing Xiao Zhuang Univ, Sch Elect Engn, Nanjing 217171, Jiangsu, Peoples R China
来源：
OPTIK | 2018年 / 158卷
基金：
中国国家自然科学基金;
关键词：
Photonic crystal fiber; Orbital angular momentum; Propagation properties; RING-CORE FIBERS; OPTICAL-FIBERS; GENERATION; DENSITY;
D O I：
10.1016/j.ijleo.2018.01.015
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A new circular photonic crystal fiber (C-PCF) with square air-holes in the cladding is proposed, which can support much more orbital angular momentum (OAM)modes. To optimize the design, the dependence of the number of OAM modes on fiber structure parameters is investigated. The simulation results show that the designed C-PCF can support 46 OAM modes stably over 800 nm bandwidth from 1.2 mu m to 2.0 mu m. Furthermore, the proposed C-PCF exhibits excellent fiber features, such as large effective index differences (square 10(-4)) without doping, low confinement loss (lower than 10(-9) dB/m), relatively flat dispersion and small nonlinear coefficient (less than 2.58 km(-1) W-1) for all eigenmodes. The proposed C-PCF could be a well-promising OAM fiber for mode division multi plexing(MDM) in high capacity fiber communication systems. (C) 2018 Elsevier GmbH. All rights reserved.
引用
收藏
页码：1266 / 1274
页数：9
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