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首页> 外文期刊>Journal of Lightwave Technology >Analysis of wavelength-switched high-density WDM networks employing wavelength conversion by four-wave-mixing in semiconductor optical amplifiers
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Analysis of wavelength-switched high-density WDM networks employing wavelength conversion by four-wave-mixing in semiconductor optical amplifiers

机译：通过半导体光放大器中的四波混频进行波长转换的波长转换高密度WDM网络的分析

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In this paper transmission through an optical transparent network layer in which very high capacity data streams are processed without optical to electrical conversion is considered. Highly-dense WDM is assumed. The optical layer is superimposed to an electrical network layer in which the high capacity streams are processed at lower digital transmission hierarchies. Photonic switching is realized inside the optical layer by means of wavelength translators based on four-wave-mixing in traveling wave semiconductor optical amplifiers. The transmission performance of the network is theoretically analyzed exploiting an accurate model of the wavelength converter. ASE and phase noise accumulation along the signal path through the network, linear crosstalk and nonlinear effects during fiber propagation are taken into account. Due to the adopted method to perform wavelength conversion, chirping/dispersion induced penalties result to be greatly reduced and homo-wavelength crosstalk inside the network nodes is almost eliminated. This allows very good transmission performances to be attained even for very high capacity networks, as demonstrated by the reported theoretical results.
机译：在本文中，考虑了通过光透明网络层的传输，在该层中处理了非常高容量的数据流，而没有进行光电转换。假定为高密度WDM。光学层叠加到网络层上，在该网络层中以较低的数字传输层次结构处理高容量流。借助于基于行波半导体光放大器中的四波混频的波长转换器，在光学层内部实现光子切换。理论上利用波长转换器的精确模型来分析网络的传输性能。考虑了沿网络信号路径的ASE和相位噪声累积，光纤传播期间的线性串扰和非线性效应。由于采用了执行波长转换的方法，因此大大降低了chi /色散引起的损失，并且几乎消除了网络节点内部的同波长串扰。如报告的理论结果所示，这甚至对于非常高容量的网络也可以实现非常好的传输性能。

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