Optimizing free space to few-mode fiber coupling efficiency

被引：21

作者：

Fardoost, Alireza ^{[1
]}

Wen, He ^{[1
]}

Liu, Huiyuan ^{[1
]}

Vanani, Fatemeh Ghaedi ^{[1
]}

Li, Guifang ^{[1
]}

机构：

[1] Univ Cent Florida, Coll Opt & Photon, CREOL, Orlando, FL 32816 USA

来源：

APPLIED OPTICS | 2019年 / 58卷 / 13期

关键词：

TRANSMISSION;

D O I：

10.1364/AO.58.000D34

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We evaluate the coupling efficiency from free space to few-mode fibers (FMF). A theoretical coupling model is developed based on the imaging properties of free-space modes and the inner products between the free-space modes and the FMF modes. Numerical results for six-and ten-mode free-space-to-FMF coupling are presented. It is found that in order to maximize the total coupling efficiency, the size of the highest-order free-space and fiber modes should be approximately matched, and there is an optimum value for the V number of the FMF. In addition, the axial alignment tolerance for free-space-to-FMF coupling is more stringent than for single-mode cases. (C) 2019 Optical Society of America

引用

页码：D34 / D38

页数：5

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