Investigation of mode coupling in step-index air-clad silica optical fibers

被引：2
|
作者：
Savovic, Svetislav [1 ,2 ]
Djordjevich, Alexandar [3 ]
Min, Rui [1 ]
机构：
[1] Beijing Normal Univ Zhuhai, Ctr Cognit & Neuroergon, State Key Lab Cognit Neurosci & Learning, Zhuhai 519087, Peoples R China
[2] Univ Kragujevac, Fac Sci, R Domanov 12, Kragujevac 34000, Serbia
[3] City Univ Hong Kong, Kowloon, 83 Tat Chee Ave, Hong Kong, Peoples R China
来源：
OPTICAL FIBER TECHNOLOGY | 2022年 / 70卷
基金：
中国国家自然科学基金;
关键词：
Air-clad silica fibers; Mode coupling; Equilibrium mode distribution; POWER-FLOW;
D O I：
10.1016/j.yofte.2022.102872
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：
This paper analyzes the state of mode coupling in a high numerical aperture (NA) step-index (SI) air-clad silica optical fiber using the power flow equation. The coupling coefficient of this equation was fine-tuned at first to allow it to correctly reconstruct previously reported experimental intensity distributions of output far-field (FF) patterns. At a length of 2100 m, the equilibrium mode distribution in the investigated fiber was obtained to be established. In our best knowledge for the first time, this paper reports on the strength of mode coupling and output beam quality of SI air-clad silica optical fiber. The results obtained can be exploited to employ SI air-clad fibers in broadband high-NA astro-photonics systems.
引用
收藏
页数：4
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