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首页> 外文期刊>電子情報通信学会技術研究報告. 光通信システム. Optical Communication Systems >Long-haul 40Gbit/s-based WDM systems using standard single-mode fiber
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Long-haul 40Gbit/s-based WDM systems using standard single-mode fiber

机译:使用标准单模光纤的长距离40Gbit / s WDM系统

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摘要

For realizing next generation 40-Gbit/s WDM transmission systems, we study a low cost long-haul terrestrial system using a standard single mode fiber (SMF) which is already installed worldwide and an NRZ modulation scheme whose transmitter is simple and small. However the degradation of optical signal to noise ratio (OSNR) due to the large loss of dispersion compensation fiber for SMF with large chromatic dispersion, and the waveform degradation due to non-liner effect become serious technical issues. In this paper, we designed a low noise repeater node with two-stage Raman amplifier whose amplification media were DCFs, and optimized dispersion map. We demonstrated the SMF transmission of over 1,600 km for 43-Gbit/s×40 channel signals in the NRZ modulation scheme.
机译:为了实现下一代40 Gbit / s WDM传输系统,我们研究了一种低成本的长距离地面系统,该系统使用已在全球范围内安装的标准单模光纤(SMF)以及发射器简单而小型的NRZ调制方案。然而,由于色散较大的SMF的色散补偿光纤的损耗较大,导致光信噪比(OSNR)的下降,以及非线性效应引起的波形下降成为严重的技术问题。在本文中,我们设计了一个具有两级拉曼放大器的低噪声中继器节点,该放大器的放大介质为DCF,并优化了色散图。我们在NRZ调制方案中演示了对于43 Gbit / s×40信道信号的1600 km以上的SMF传输。

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