Circular photonic crystal fiber supporting 118 orbital angular momentum modes transmission

被引：18
作者：
Fu, Haihao [1 ]
Liu, Chao [1 ]
Hu, Chunjie [2 ]
Zhou, Lei [3 ]
Shi, Ying [4 ]
Lv, Jingwei [1 ]
Yang, Lin [1 ]
Chu, Paul K. [5 ,6 ]
机构：
[1] Northeast Petr Univ, Daqing, Peoples R China
[2] Harbin Med Univ, Dept Gynaecol & Obstet, Affiliated Hosp 4, Harbin, Peoples R China
[3] Harbin Med Univ, Dept Orthoped, Affiliated Hosp 2, Harbin, Peoples R China
[4] Northeast Petr Univ, Inst Unconvent Oil & Gas, Daqing, Peoples R China
[5] City Univ Hong Kong, Dept Phys, Dept Mat Sci & Engn, Hong Kong, Peoples R China
[6] City Univ Hong Kong, Dept Biomed Engn, Kowloon, Hong Kong, Peoples R China
来源：
OPTICAL ENGINEERING | 2021年 / 60卷 / 07期
关键词：
orbital angular momentum; photonic crystal fiber; optical communication; nonlinear coefficient; AMPLIFICATION;
D O I：
10.1117/1.OE.60.7.076102
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Circular photonic crystal fiber consisting of doped amethyst and big and small round air holes is designed to support transmission of 118 orbital angular momentum (OAM) modes in the range of 1.2 to 1.65 mu m. Numerical analysis by the finite element method (FEM) reveals that the effective index difference of all the modes are larger than 1 x 10(-4), which can propagate OAM modes stably. The nonlinear coefficient is 0.583 W-1 km(-1) at 1.55 mu m, which is very low and helps to reduce mode coupling. In addition, the confinement loss of the eigenmode is between 10(-12) and 10(-8) dB /m. The dispersion is very flat for the low-order mode HE1,1, for which the dispersion variation is just 1.459 ps/(km nm). This fiber has great potential in stable and large-capacity mode propagation in optical communication. (C) 2021 Society of Photo-Optical Instrumentation Engineers (SPIE)
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页数：11
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