Low-complexity turbulence resilience enabled by a multi-mode bi-directional transceiver

IF 3.2 2区物理与天体物理 Q2 OPTICS

Optics express Pub Date : 2024-09-10 DOI:10.1364/oe.532749

Ultan J. Daly, Fortune Iga, Aleksandr Boldin, Adam J. Vallance, Mitchell A. Cox, Martin P. J. Lavery

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引用次数: 0

Abstract

Free-space optical (FSO) communication systems are acutely affected by the pointing issues and distortions that result from mechanical instability and environmental factors such as turbulence. These distortions have generally prevented single-mode bi-directional systems from being deployed without adaptive optics due to high optical losses. We investigate and compare the performance of both step and graded index multi-mode fibers for bi-directional communications over an emulated 400 m FSO channel. We propose that OM5 graded index fiber will simultaneously provide a near Gaussian optical transmission mode and a factor of greater than 5 increase in the field of view compared to single-mode fiber. We demonstrate that OM5 can support an error-free throughput of 10 Gbps for low-turbulence (D/r0 = 3) and 9.1 Gbps for high-turbulence (D/r0 = 9) using commercial bi-directional small form-factor pluggable (SFP+) transceivers with no adaptive optical components.

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多模双向收发器带来的低复杂度湍流恢复能力

自由空间光学（FSO）通信系统受到机械不稳定性和湍流等环境因素造成的指向问题和畸变的严重影响。由于光损耗大，这些畸变通常使单模双向系统无法在没有自适应光学器件的情况下部署。我们研究并比较了阶跃多模光纤和渐变多模光纤在模拟 400 米 FSO 信道上的双向通信性能。我们提出，OM5 梯度指数光纤可同时提供接近高斯的光传输模式，与单模光纤相比，视场角增加 5 倍以上。我们展示了 OM5 在低湍流（D/r0 = 3）和高湍流（D/r0 = 9）情况下的无差错吞吐量，使用商业双向小型可插拔（SFP+）收发器，无需自适应光学元件。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics express 物理-光学

CiteScore

6.60

自引率

15.80%

发文量

5182

审稿时长

2.1 months

期刊介绍： Optics Express is the all-electronic, open access journal for optics providing rapid publication for peer-reviewed articles that emphasize scientific and technology innovations in all aspects of optics and photonics.