不同大气条件影响下基于混合光放大器的 480-Gbps DWDM-FSO 系统的性能分析

IF 2.4 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Frontiers in Computer Science Pub Date : 2024-02-07 DOI:10.3389/fcomp.2024.1348024
H. Obaid, Shahzad Ashraf, Muhammad Asgher Nadeem, Hifsa Shahid, Adeel Akram, Muhammad Zafrullah
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引用次数: 0

摘要

自由空间光学(FSO)系统为在偏远地区提供通信服务提供了一种理想且经济实惠的方式。它们提供安全的无线传输,无需许可证,实施成本较低。然而,由于大气湍流对 FSO 系统的有效性产生影响,其实施面临重大挑战。密集波分复用技术(DWDM)在满足光网络日益增长的带宽需求方面前景广阔。本文介绍了一种基于混合光放大器的系统,该系统结合了 DWDM 和 FSO 技术。在这种系统中,节能涉及各方面的优化,以便在保持或提高性能的同时降低功耗。拟议的 DWDM-FSO 系统运行速率为 480 Gbps,由 12 个信道组成,每个信道能够以 40 Gbps 的速率传输数据。通过确定 C 波段内使用混合放大器和不使用混合放大器两种情况下的 Q 因子和误码率(BER),对系统的性能进行了评估和比较,尤其侧重于 1550 nm 左右的波长。此外,还增加了 FSO 链路的长度,以评估相应的 Q 因子和误码率。最后,确定 FSO 链路的最大距离,确保其保持在可接受的 Q 因子和误码率阈值范围内。此外,还对 FSO 系统在各种大气条件下的有效性进行了评估和比较。研究结果表明,在晴朗天气条件下,不使用混合放大器时,FSO 系统的最大距离可达 510 米,同时保持令人满意的 Q 因子和误码率值。然而,通过集成混合放大器,该系统在晴朗天气条件下的传输距离大幅延长至 1700 米,同时仍保持可接受的 Q 因子和误码率值。
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Performance analysis of a hybrid optical amplifier based 480-Gbps DWDM-FSO system under the effect of different atmospheric conditions
Free space optical (FSO) systems offer a desirable and affordable way of providing communication services in remote locations. They provide secure wireless transmission without the requirement for licensing and with lower implementation costs. However, due to the impact of atmospheric turbulences on the effectiveness of FSO systems, their implementation faces significant challenges. Dense wavelength division multiplexing (DWDM) has shown promise in addressing the growing bandwidth needs in optical networks. This paper introduces a hybrid optical amplifier based system, combining DWDM and FSO technology. Energy conservation in such a system involves optimizing various aspects to reduce power consumption while maintaining or improving performance. The proposed DWDM-FSO system operates at a rate of 480 Gbps and consists of 12 channels, each capable of transmitting data at 40 Gbps. The system's performance is evaluated and compared by determining the Q-factor and bit error rate (BER) for both the cases when hybrid amplifier is employed and with no hybrid amplifier within the C-band, specifically focusing on wavelengths around 1550 nm. Moreover, the length of the FSO link is increased to assess the corresponding Q-factor and BER. Resultantly, the maximum distance for the FSO link is determined, ensuring that it remains within acceptable Q-factor and BER thresholds. Furthermore, the FSO system's effectiveness is assessed and compared across various atmospheric conditions. The findings reveal that, in clear weather conditions, the FSO system achieves a maximum distance of 510 meters while maintaining satisfactory Q-factor and BER values when not utilizing a hybrid amplifier. However, by integrating a hybrid amplifier, the system's reach significantly extends to 1700 m under clear weather conditions, still maintaining acceptable Q-factor and BER values.
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来源期刊
Frontiers in Computer Science
Frontiers in Computer Science COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS-
CiteScore
4.30
自引率
0.00%
发文量
152
审稿时长
13 weeks
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