Turbulence-Resistant All Optical Relaying Based on Few-Mode EDFA in Free-Space Optical Systems

被引：15

作者：

Cai, Shanyong ^{[1
]}

Zhang, Zhiguo ^{[1
]}

Chen, Xue ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2019年 / 37卷 / 09期

基金：

中国国家自然科学基金;

关键词：

EDFA; few mode fiber; free space optical communication; relay; COMMUNICATION; TRANSMISSION; ENHANCEMENT; PERFORMANCE;

D O I：

10.1109/JLT.2019.2897428

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：

We investigate the communication performance of a few-mode EDFA based all-optical relaying system for atmospheric channels in this paper. A dual-hop free space optical communication model based on the relay with two-mode EDFA is derived. The bit error rate (BER) performance is numerically calculated. Compared with all-optical relaying system with single-mode EDFA, the power budget is increased by 4 dB, 7.5 dB, and 11.5 dB at BER = 1 x 10(-4) under the refractive index structure constant C-n(2) = 2 x 10(-14), 5 x 10(-1)4, and 1 x 10(-13), respectively, when a few mode fiber supporting four modes is utilized as the receiving fiber at the destination. The optimal relay location is slightly backward from the middle of the link. The BER performance is the best when mode-dependent gain of FM-EDFA is zero.

引用

页码：2042 / 2049

页数：8

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