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Dispersion Limits of the Small Mode Area Photonic Crystal Fibers Designed as a Broadband Compensator

机译：设计为宽带补偿器的小模区域光子晶体光纤的色散极限

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摘要

Nonlinear photonic crystal fibers with small effective mode area allow to control chromatic dispersion in the near-infrared region. In this paper the chromatic dispersion is controlled entirely by structural parameters and the influence of each structural parameter is examined and described in detail. Understanding of the influence not only permits fiber design and dispersion tailoring, but also predicts the potential manufacturing tolerances. As a consequence, the fiber structural parameters are modified to found the balance between the operating bandwidth and the high negative dispersion parameter. We found that the limit value for the dispersion parameter is of about -1600 ps-nm~(-1).km~(-1) at 1550 nm whereas the desired dispersion slope is achieved over the 120 nm wide band. We predict that the negative dispersion parameter cannot be higher in the small effective mode area photonic crystal fibers operating over the bandwidth larger than the one considered in our paper. The results are calculated by the full-vectorial finite difference frequency domain method.
机译：有效模式面积小的非线性光子晶体光纤可以控制近红外区域的色散。在本文中，色散完全由结构参数控制，并对每个结构参数的影响进行了检查和详细描述。了解这些影响不仅可以进行光纤设计和色散调整，还可以预测潜在的制造公差。结果，修改了纤维结构参数以在工作带宽和高负色散参数之间找到平衡。我们发现，色散参数的极限值在1550 nm时约为-1600 ps-nm〜（-1）.km〜（-1），而在120 nm宽带上实现了所需的色散斜率。我们预测，在带宽大于我们所考虑的带宽的小有效模式面积光子晶体光纤中，负色散参数不会更高。通过全矢量有限差分频域方法计算结果。

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