Optimization of photonic crystal fibers for transmission of orbital angular momentum modes

被引：17

作者：

Liu, Chao ^{[1
]}

Fu, Haihao ^{[1
]}

Hu, Chunjie ^{[2
]}

Zhou, Lei ^{[3
]}

Shi, Ying ^{[4
]}

Lv, Jingwei ^{[1
]}

Yang, Lin ^{[1
]}

Chu, Paul K. ^{[5
,6
,7
]}

机构：

[1] Northeast Petr Univ, Sch Phys & Elect Engn, Daqing 163318, Peoples R China

[2] Harbin Med Univ, Dept Obstet & Gynaecol, Affiliated Hosp 4, Harbin 150001, Peoples R China

[3] Harbin Med Univ, Dept Orthoped, Affiliated Hosp 2, Harbin 150081, Peoples R China

[4] Northeast Petr Univ, Inst Unconvent Oil & Gas, Daqing 163318, Peoples R China

[5] City Univ Hong Kong, Dept Phys, Kowloon, Tat Chee Ave, Hong Kong, Peoples R China

[6] City Univ Hong Kong, Dept Mat Sci & Engn, Kowloon, Tat Chee Ave, Hong Kong, Peoples R China

[7] City Univ Hong Kong, Dept Biomed Engn, Kowloon, Tat Chee Ave, Hong Kong, Peoples R China

来源：

OPTICAL AND QUANTUM ELECTRONICS | 2021年 / 53卷 / 11期

关键词：

Orbital angular momentum; Photonic crystal fiber; Optical fiber communication; Fiber design; DESIGN; OAM; DISPERSION; CORE;

D O I：

10.1007/s11082-021-03281-4

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Photonic crystal fibers (PCFs) which can transmit orbital angular momentum (OAM) modes are attractive to optical communication due to the large capacity and flexible structure. Herein, a method is proposed to optimize a simple fiber structure by changing the thickness of the annular area. The changes in the effective index, effective index difference, dispersion, effective mode area, nonlinear coefficient, numerical aperture, mode purity, and walk-off length in the thickness range of 2.0 mu m to 2.5 mu m are determined, compared, and analyzed systematically. The distance between the square air holes and central air hole is the better parameter to optimize the dispersion, effective mode area, and nonlinear coefficient, whereas the radius of the central air hole is more suitable for optimizing the NA, OAM purity and walk-off length. The optimization method and results have great value pertaining to the design and improvement of PCFs for transmission of OAM modes.

引用

页数：18

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