作者
Mitchell A Cox, Luthando Maqondo, Ravin Kara, Giovanni Milione, Ling Cheng, Andrew Forbes
发表日期
2019/3/17
期刊
Journal of Lightwave Technology
卷号
37
期号
16
页码范围
3911-3917
出版商
IEEE
简介
Vast geographical distances in Africa are a leading cause for the so-called digital divide due to the high cost of installing fiber. Free-space optical (FSO) communications offer a convenient and higher bandwidth alternative to point-to-point radio microwave links, with the possibility of repurposing existing infrastructure. Unfortunately, the range of high-bandwidth FSO remains limited. While there has been extensive research into an optimal mode set for FSO to achieve maximum data throughput by mode division multiplexing, there has been relatively little work investigating optical modes to improve the resilience of FSO links. Here, we experimentally show that a carefully chosen subset of Hermite-Gaussian modes is more resilient to atmospheric turbulence than similar Laguerre-Gauss beams, with a predicted upper bound increase in propagation distance of 167% at a mode-dependent loss of 50%.
引用总数
2019202020212022202320247171718221
学术搜索中的文章
MA Cox, L Maqondo, R Kara, G Milione, L Cheng… - Journal of Lightwave Technology, 2019