Design of ultra-long-distance optical transport networks based on high-order remotely pumped amplifier

IF 0.7 Q4 COMPUTER SCIENCE, INFORMATION SYSTEMS Journal of High Speed Networks Pub Date : 2022-07-29 DOI:10.3233/jhs-220688

R. Chi, Lei Li, Sang Gui, Fei Wang, Zijian Mao, Xiaohan Sun, Ning Cao

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Abstract

In order to further increase the span length of the Optical Transport Network (OTN) transmission system, a combination of Raman amplifier and remotely optical pumped amplifier (ROPA) configuration scheme is recommended. Optimal EDF length, optimal ROPA position and OTN span limitation are obtained through simulations. A field-trial with 8*10 Gb/s in 380 km span system is carried out with the amplifier configuration of Raman amplifier plus first-order and second-order remotely pumped amplifier. By adding a second-order remote pump laser, the transmission limit is increased from 77.5 dB to 80.7 dB. Through detailed analysis of the system, it is concluded that the second-order remote pump can effectively transfer the pump power to the first-order remote pump wavelength, which greatly increases the pump power at the gain module, thereby increasing the gain of the RGU and reduce its noise. Moreover, the introduction of the second-order remote pump effectively weakened the self-excited effect and overcomes the shortcomings of the low pump power threshold of the first-order remote pump.

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基于高阶远程泵浦放大器的超长距离光传输网络设计

为了进一步增加OTN传输系统的跨长，建议采用拉曼放大器与远程光泵浦放大器(ROPA)相结合的配置方案。通过仿真得到了最优EDF长度、最优ROPA位置和OTN跨度限制。采用拉曼放大器+一阶和二阶远程泵浦放大器的放大器配置，在380 km的系统中进行了8* 10gb /s的现场试验。通过增加二阶远端泵浦激光器，将传输极限从77.5 dB提高到80.7 dB。通过对系统的详细分析，得出二阶远程泵浦可以有效地将泵浦功率传递到一阶远程泵浦波长，从而大大增加增益模块处的泵浦功率，从而提高RGU的增益并降低其噪声。此外，二阶远程泵的引入有效地削弱了自激效应，克服了一阶远程泵泵功率阈值低的缺点。

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

Journal of High Speed Networks Computer Science-Computer Networks and Communications

CiteScore

1.80

自引率

11.10%

发文量

期刊介绍： The Journal of High Speed Networks is an international archival journal, active since 1992, providing a publication vehicle for covering a large number of topics of interest in the high performance networking and communication area. Its audience includes researchers, managers as well as network designers and operators. The main goal will be to provide timely dissemination of information and scientific knowledge. The journal will publish contributed papers on novel research, survey and position papers on topics of current interest, technical notes, and short communications to report progress on long-term projects. Submissions to the Journal will be refereed consistently with the review process of leading technical journals, based on originality, significance, quality, and clarity. The journal will publish papers on a number of topics ranging from design to practical experiences with operational high performance/speed networks.