Schenato Luca, Park Minkyu, Palmieri Luca, Lee Sejin, Sassi Raffaele, Galtarossa Andrea, Oh Kyunghwan
Department of Information Engineering, University of Padova, Padova, Italy.
Opt Express. 2010 Sep 13;18(19):20344-9. doi: 10.1364/OE.18.020344.
The modal distribution of a novel elliptical hollow optical fiber is experimentally and numerically characterized. The fiber has a central elliptical air hole surrounded by a germanosilicate lanceolate ring core. Experiments reveal that the fiber behaves like a dual core waveguide and it is found that the differential group delay of each core decreases with wavelength with a PMD coefficient slope of ~10(-2) ps/m/THz. Experimental results are also compared with numerical modeling based on scanning electron microscopy images.
对一种新型椭圆空心光纤的模态分布进行了实验和数值表征。该光纤有一个中心椭圆气孔，周围是一个锗酸盐披针形环芯。实验表明，该光纤表现得像一个双芯波导，并且发现每个芯的差分群延迟随波长减小，偏振模色散系数斜率约为10^(-2) ps/m/THz。实验结果还与基于扫描电子显微镜图像的数值模拟进行了比较。
