Kim So Eun, Kim Bok Hyeon, Lee Chung Ghiu, Lee Sejin, Oh Kyunghwan, Kee Chul-Sik
Nanophotnics Laboratory, Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, Buk-gu, Gwangju, Korea.
Opt Express. 2012 Jan 16;20(2):1385-91. doi: 10.1364/OE.20.001385.
We propose a novel design of photonic crystal fiber (PCF) using an elliptical air hole in the core as a defected core in order to enhance the performance of modal birefringence and to control the properties of chromatic dispersion at the same time. From the simulation results, it is shown that the proposed fiber has high birefringence up to the order of 10(-2), negative flattened chromatic dispersion in a broad range of wavelengths, and low confinement loss less than that of the single mode fiber. The outstanding advantage of the proposed PCF is that high birefringence, negative flattened dispersion, and low confinement loss can be achieved just by adding a small sized elliptical air hole in the core to the elliptical air hole PCF, especially at the same time.
我们提出了一种新型光子晶体光纤（PCF）设计，该设计在纤芯中使用椭圆形气孔作为缺陷纤芯，以便同时提高模式双折射性能并控制色散特性。从模拟结果可知，所提出的光纤具有高达10^(-2)量级的高双折射、在宽波长范围内的负平坦色散以及低于单模光纤的低限制损耗。所提出的光子晶体光纤的突出优点是，只需在椭圆形气孔光子晶体光纤的纤芯中添加一个小尺寸椭圆形气孔，就能实现高双折射、负平坦色散和低限制损耗，尤其是能同时实现这些特性。
