Impacts of distributed Raman amplification transmission technologies on terrestrial large-capacity WDM systems

Electronics and Communications in Japan (Part I: Communications) Pub Date : 2007-02-21 DOI:10.1002/ecja.20340

Hiroji Masuda, Masahito Tomizawa, Yutaka Miyamoto, Kazuo Hagimoto

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引用次数: 1

Abstract

The impact of distributed Raman amplification (DRA) technologies on long-distance large-capacity transmission systems is discussed from the viewpoint of improving the signal-to-noise ratio (SNR). First, we show the characteristics of this technology, which has brought significant improvement to the SNR, and its trends, the basic configuration for our proposed DRA system (a DRA/EDFA hybrid configuration), and safety aspects for high-power pumped light. In addition, we show the merits of the DRA system, including the amount of improvement in the optical SNR, transmission fiber (DSF and SMF) dependence, and superiority of DSF over SMF (about 2 to 3 dB). Furthermore, in a long-distance large-capacity wavelength division multiplexing transmission field trial using DRA in the L band on DSF, we confirm good transmission characteristics. In other words, the impact of DRA technologies lies in the significant improvement of the SNR in terrestrial long-distance large-capacity optically amplified transmission systems with field-installed fibers, and in the improvement of performance in systems utilizing these technologies. © 2007 Wiley Periodicals, Inc. Electron Comm Jpn Pt 1, 90(6): 20–28, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecja.20340

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分布式拉曼放大传输技术对地面大容量波分复用系统的影响

从提高信噪比的角度讨论了分布式拉曼放大技术对远距离大容量传输系统的影响。首先，我们展示了该技术的特点，它带来了信噪比的显著改善，以及它的趋势，我们提出的DRA系统的基本配置(DRA/EDFA混合配置)，以及大功率泵浦光的安全性方面。此外，我们还展示了DRA系统的优点，包括光信噪比的改善量，传输光纤(DSF和SMF)的依赖性，以及DSF相对于SMF的优越性(约2至3 dB)。此外，在远距离大容量波分复用传输现场试验中，我们在DSF上使用了L波段的DRA，证实了良好的传输特性。换句话说，DRA技术的影响在于现场安装光纤的地面长距离大容量光放大传输系统信噪比的显著提高，以及利用这些技术的系统性能的提高。©2007 Wiley期刊公司电子工程学报，2009,29 (6):393 - 398;在线发表于Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002 / ecja.20340

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Electronics and Communications in Japan (Part I: Communications)

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