Ultra-flattened chromatic dispersion controllability using a defected-core photonic crystal fiber with low confinement losses.
Ultra-flattened chromatic dispersion controllability using a defected-core photonic crystal fiber with low confinement losses.
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DOI：
10.1364/opex.13.008365
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发表时间：
2005-10
期刊：
影响因子：
3.8
通讯作者：
K. Saitoh;N. Florous;M. Koshiba
中科院分区：
文献类型：
--
作者：
K. Saitoh;N. Florous;M. Koshiba
本文提出了一种新颖的系统解决方案来控制光子晶体光纤(PCF)中的色散和色散斜率问题，该方案采用具有缺陷芯的结构简单的PCF。通过调整中心气孔缺陷的大小，可以成功地设计出限制损耗小、有效模面积小的超平坦光子晶体光纤。该设计策略是基于光子晶体光纤的材料色散和波导之间的相互抵消，通过改变纤芯中心缺陷区域的大小来实现的。采用各向异性完全匹配层的精确全矢量有限元方法，验证了PCF的超平坦色散特性。超平坦的色散特性，以及低的限制损耗和小的有效模式面积是所提出的PCF结构的主要优点，使其适合作为色散控制器色散补偿器，或者作为非线性光学应用的候选者。
The present paper describes a novel systematic solution to the problem of controlling the chromatic dispersion and dispersion slope in photonic crystal fibers (PCFs), using a structurally-simple PCF with a defected-core. By adjusting the size of the central air-hole defect we can successfully design an ultra-flattened PCF with low confinement losses, as well as small effective mode area. The design strategy is based on the mutual cancellation between the waveguide and the material dispersions of the PCF, by varying the size of the central defected region in the core. The verification of the ultra-flattened chromatic dispersion property of the proposed PCF is ensured with an accurate full-vector finite element method with anisotropic perfectly matched layers. The ultra-flattened dispersion feature, as well as the low confinement losses and the small effective mode area are the main advantages of the proposed PCF structure, making it suitable as a chromatic dispersion controller dispersion compensator, or as candidate for nonlinear optical applications.